BACKGROUND Endometrial lesions include endometrial cancer and inferior fibroids.Among them,endometrial cancer as a malignant tumor seriously endangers the life and health of patients.Ultrasonography is an important me...BACKGROUND Endometrial lesions include endometrial cancer and inferior fibroids.Among them,endometrial cancer as a malignant tumor seriously endangers the life and health of patients.Ultrasonography is an important means of diagnosing female reproductive system diseases,and it is of critical value for the early diagnosis of endometrial cancer.However,different ultrasound inspection programs have achieved different results.It is of great significance to choose a suitable inspection program.AIM To explore the diagnostic efficacy of different ultrasonic examination methods in clinical endometrial lesions.METHODS The 140 patients with endometrial lesions who were treated in our hospital from April 2018 to October 2019 were used as the research subjects.All patients underwent transvaginal color ultrasound and transabdominal color ultrasound.We compared the diagnostic coincidence and image display effects of the two different examination methods,and the endometrial thickness,blood flow,uterine effusion and resistance index of different diseases were observed by transvaginal color ultrasound.RESULTS The diagnostic coincidence rate of all types of diseases of transvaginal color ultrasound was significantly higher than that of transabdominal color ultrasound(P=0.001,0.005,0.001 and 0.001).In addition,the excellent and good rate of image display of transvaginal color ultrasound was higher than that of transabdominal color ultrasound(P=0.001).There were significant differences in endometrial thickness in patients with different types of endometrial lesions through the transvaginal color examination(P=0.001).The incidence rate of uterine effusion in patients with endometrial carcinoma was significantly higher than that in patients with other types of endometrial lesions(P=0.001),and the rate of the blood flow was the highest(P=0.001).The comparison of blood flow resistance index indicated that the blood flow resistance index in endometrial cancer patients was the lowest,which shows that the difference was statistically significant(P=0.001).CONCLUSION The overall diagnostic efficacy of transvaginal color ultrasound in the clinical diagnosis of endometrial lesions is better than that of transabdominal color ultrasound,which held higher diagnostic coincidence rate and image display effect.There were significant differences in the thickness of the endometrium and the blood flow in different types of lesions.展开更多
AIM:To observe the imaging features of color Doppler ultrasound(CDU)and computed tomography(CT)or computed tomography dacryocystography(CT-DCG)in different types of lacrimal sac space-occupying lesions(SOLs).METHODS:T...AIM:To observe the imaging features of color Doppler ultrasound(CDU)and computed tomography(CT)or computed tomography dacryocystography(CT-DCG)in different types of lacrimal sac space-occupying lesions(SOLs).METHODS:This retrospective case series study included 21 patients with lacrimal sac SOLs who underwent lacrimal sac surgery between January 2018 and March 2022.The imaging features of CDU and CT or CT-DCG in these patients were extracted from the examination cloud system.The images were observed and analyzed.RESULTS:The detection rate of lacrimal SOLs between CDU(21/21,100%)and CT or CT-DCG(20/21,95.2%)had no statistically significant difference(P=1.0).CDU could detect the blood flow signals in all SOLs except mucocele and mucopeptide concretion.Among them,polyps had characteristic imaging changes on CDU and CT-DCG.The mucoceles and mucopeptide concretions had characteristic imaging changes on CDU,which could provide more information for differential diagnosis.CONCLUSION:The morphology and internal blood flow signals of lacrimal sac SOLs can be observed using CDU.CT or CT-DCG has advantages in observing structural damage around the lacrimal sac mass.Therefore,CDU may be used as a routine examination to exclude lacrimal sac SOLs before dacryocystorhinostomy in the absence of preoperative CT or CT-DCG.展开更多
AIM: To study the portal hemodynamics and their relationship with the size of esophageal varices seen at endoscopy and to evaluate whether these Doppler ultrasound parameters might predict variceal bleeding in patient...AIM: To study the portal hemodynamics and their relationship with the size of esophageal varices seen at endoscopy and to evaluate whether these Doppler ultrasound parameters might predict variceal bleeding in patients with liver cirrhosis and portal hypertension.METHODS: One hundred and twenty cirrhotic patients with esophageal varices but without any previous bleeding were enrolled in the prospective study. During a 2-year observation period, 52 patients who had at least one episode of acute esophageal variceal hemorrhage constituted the bleeding group, and the remaining 68 patients without any previous hemorrhage constituted the non-bleeding group. All patients underwent endoscopy before or after color Doppler-ultrasonic examination, and images were interpreted independently by two endoscopists. The control group consisted of 30 healthy subjects, matched to the patient group in age and gender. Measurements of diameter,flow direction and flow velocity in the left gastric vein (LGV) and the portal vein (PV) were done in all patients and controls using color Doppler unit. After baseline measurements, 30 min after oral administration of 75 g glucose in 225 mL, changes of the diameter, flow velocity and direction in the PV and LGV were examined in 60 patients with esophageal varices and 15 healthy controls.RESULTS: The PV and LGV were detected successfully in 115 (96%) and 105 (88%) of 120 cirrhotic patients,respectively, and in 27 (90%) and 21 (70%) of 30 healthy controls, respectively. Among the 120 cirrhotic patients,37 had F1, 59 had F2, and 24 had F3 grade varices. Compared with the healthy controls, cirrhotic group had a significantly lower velocity in the PV, a significantly greater diameter of the PV and LGV, and a higher velocity in the LGV. In the cirrhotic group, no difference in portal flow velocity and diameter were observed between patients with or without esophageal variceal bleeding (EVB). However, the diameter and blood flow velocity of the LGV were significantly higher for EVB (+) group compared with EVB (-) group (P＜0.01).Diameter of the LGV increased with enlarged size of varices.There were differences between F1 and F2, F1 and F3 varices, but no differences between F2 and F3 varices (P = 0.125). However, variceal bleeding was more frequent in patients with a diameter of LGV ＞6 mm. The flow velocity in the LGV of healthy controls was 8.70±1.91 cm/s (n = 21). In patients with liver cirrhosis, it was 10.3±2.1 cm/s (n = 12) when the flow was hepatopetal and 13.5±2.3 cm/s (n = 87) when it was hepatofugal. As the size of varices enlarged, hepatofugal flow velocity increased (P＜0.01) and was significantly different between patients with F1 and F2 varices and between patients with F2 and F3 varices. Variceal bleeding was more frequent in patients with a hepatofugal flow velocity ＞15 cm/s (32 of 52 patients, 61.5%). Within the bleeding group, the mean LGV blood flow velocity was 16.6±2.62 cm/s. No correlation was observed between the portal blood flow velocity and EVB. In all healthy controls, the flow direction in the LGV was hepatopetal, toward the PV. In patients with F1 varices, flow direction was hepatopetal in 10 patients, to-and-fro state in 3 patients, and hepatofugal in the remaining 18. The flow was hepatofugal in 91% patients with F2 and all F3 varices. Changes in diameter of the PV and LGV were not significant before and after ingestion of glucose (PV: 1.41±1.5 cm before and 1.46±1.6 cm after; LGV: 0.57±1.7 cm before and 0.60±1.5 cm after).Flow direction in the LGV was hepatopetal and to-and-fro in 16 patients and hepatofugal in 44 patients before ingestion of glucose. Flow direction changed to hepatofugal in 9 of 16 patients with hepatopetal and to-and-fro blood flow after ingestion of glucose. In 44 patients with hepatofugal blood flow in the LGV, a significant increase in hepatofugal flow velocity was observed in 38 of 44 patients (86%) with esophageal vadces. There was a relationship between the percentage changes in flow velocity and the size of varices. Patients who responded excessively to food ingestion might have a high risk for bleeding. The changes of blood flow velocity in the LGV were greater than those in the PV (LGV: 28.3±26.1%, PV: 7.2±13.2%, P＜0.01), whereas no significant changes in the LGV occurred before and after ingestion of glucose in the control subjects.CONCLUSION: Hemodynamics of the PV is unrelated to the degree of endoscopic abnormalities in patients with liver cirrhosis. The most important combinations are endoscopic findings followed by the LGV hemodynamics.Duplex-Doppler ultrasonography has no value in the identification of patients with cirrhosis at risk of variceal bleeding. Hemodynamics of the LGV appears to be superior to those of the PV in predicting bleeding.展开更多
<strong>Objective</strong><span style="font-family:;" "=""><span style="font-family:Verdana;"><strong>: </strong>To evaluate the clinical value of...<strong>Objective</strong><span style="font-family:;" "=""><span style="font-family:Verdana;"><strong>: </strong>To evaluate the clinical value of transcranial color Doppler ultrasound (TCCD) in assessing cerebral function after cardiopulmonary resuscitation (CPR). </span><b><span style="font-family:Verdana;">Methods</span></b><span style="font-family:Verdana;">: A prospective study was conducted in 52 patients with cardiac arrest treated by CPR from January 2018 to January 2020, and its clinical data were analyzed</span></span><span style="font-family:Verdana;">. </span><span style="font-family:;" "=""><span style="font-family:Verdana;">According to classification of cerebral performance category (CPC), 31 cases (CPC grade 1 - 2) were selected in the good prognosis group and 21 cases (CPC grade 3 - 5) in the poor prognosis group. The cerebral blood flow was measured by transcranial Doppler ultrasound (TCCD) 24 h after CPR, and the differences were compared between the two groups in stroke index, diastolic blood flow velocity (Vd), systolic peak blood flow velocity (Vs) and mean peak blood flow velocity (Vm). The ROC curve of cerebral blood flow after CPR was drawn to predict the prognosis of brain function. </span><b><span style="font-family:Verdana;">Results</span></b><span style="font-family:Verdana;">: The data showed that the pulsatility index of middle cerebral artery of the poor prognosis group decreased within 24 h</span></span><span style="font-family:Verdana;">;</span><span style="font-family:Verdana;">the difference between the two groups was statistically significant (p < 0.05);the Vd, Vs, Vm increased in the good prognosis group</span><span style="font-family:Verdana;">;</span><span style="font-family:;" "=""><span style="font-family:Verdana;">the difference between the two groups was statistically significant (p < 0.05). The ROC curve of cerebral blood flow after CPR was drawn to predict the prognosis of brain function, and the results showed that the area under the curve and the optimal critical value of cerebral blood flow were 0.731 and 5.69. The sensitivity and specificity were 67.3% and 79.1% respectively. </span><b><span style="font-family:Verdana;">Conclusion</span></b><span style="font-family:Verdana;">: The cerebral blood flow increase in the early stage of successful CPR is positively correlated with the prognosis of cerebral functional resuscitation. Monitoring intracranial blood flow after CPR by TCCD has clinical value to evaluate prognosis of brain function.</span></span>展开更多
Objective To evaluate endometrial and subendometrial blood flows measured by vaginal color Doppler ultrasound as a predicator of endometrial receptivity in women undergoing IVF treatment. Methods A total of 119 infert...Objective To evaluate endometrial and subendometrial blood flows measured by vaginal color Doppler ultrasound as a predicator of endometrial receptivity in women undergoing IVF treatment. Methods A total of 119 infertile patients undergoing the first IVF/ICSI-ET cycle were recruited. Three groups were divided according to a color Doppler ultrasound exami- nation performed on the day of hCG injection. Group A, endometrial and subendometrial blood flows were 2 branches and below; group B, endometrial and subendometrial blood flows were between 3 and 4 branches; group C, endometrial and subendometrial blood flows were 5 branches and above. Patients were transferred 1-3 embryos each. Demographic data, ovarian responses, endometrial thickness, PI, RI, development of embryo and IVF result among groups were compared. Results Demographic data, ovarian responses, endometrial thickness, PI, RI and development of embryo among groups have no significant difference. The pregnancy rate of group A was significantly lower than that of group B (P<0.05) and group C (P<0.01). The implantation rate of group A was significantly lower than than of group C (P<0.01). There was no significant difference of the rate of pregnancy and implantation between group B and group C (P>0.05). Conclusion Endometrial and subendometrial blood flows measured by vaginal color Doppler ultrasound is a good predicator of pregnancy during IVF treatment. A good endometrial and subendometrial blood flows is benefit for the result of IVF.展开更多
BACKGROUND In clinical practice,the diagnosis is sometimes difficult with contrast-enhanced ultrasound(CEUS)when the case has an atypical perfusion pattern.Color parametric imaging(CPI)is an analysis software for CEUS...BACKGROUND In clinical practice,the diagnosis is sometimes difficult with contrast-enhanced ultrasound(CEUS)when the case has an atypical perfusion pattern.Color parametric imaging(CPI)is an analysis software for CEUS with better detection of temporal differences in CEUS imaging using arbitrary colors.It measures the differences in arrival time of the contrast agent in lesions so that the perfusion features of atypical hemangioma and colorectal cancer(CRC)liver metastasis can be distinguished.AIM To evaluate the role of a novel type of CPI of CEUS in the differential diagnosis of atypical hemangioma from liver metastases in patients with a history of CRC.METHODS From January 2016 to July 2018,42 patients including 20 cases of atypical hemangioma and 22 cases of liver metastases from CRC were enrolled.These patients had a mean age of 60.5±9.3 years(range:39-75 years).All patients received ultrasound,CEUS and CPI examinations.Resident and staff radiologists independently and retrospectively reviewed CEUS and CPI images.Two sets of criteria were assigned:(1)Routine CEUS alone;and(2)CEUS and CPI.The diagnostic sensitivity,specificity,accuracy and receiver operating characteristic(ROC)curve of resident and staff radiologists were analyzed.RESULTS The following CPI features were significantly different between liver hemangioma and liver metastases analyzed by staff and resident radiologists:Peripheral nodular enhancement(65%-70.0%vs 4.5%-13.6%,P<0.001,P=0.001),mosaic/chaotic enhancement(5%-10%vs 68.2%-63.6%,P<0.001,P<0.001)and feeding artery(20%vs 59.1%-54.5%,P=0.010,P=0.021).CPI imaging offered significant improvements in detection rates compared with routine CEUS in both resident and staff groups.By resident radiologists,the specificity and accuracy of CEUS+CPI were significantly increased compared with that of CEUS(77.3%vs 45.5%,P=0.030;78.6%vs 50.0%,P=0.006).In addition,the area under the curve(AUC)of CEUS+CPI was significantly higher than that of CEUS(0.803 vs 0.757,P=0.036).By staff radiologists,accuracy was improved in CEUS+CPI(81.0%vs 54.8%,P=0.010),whereas no significant differences in specificity and sensitivity were found(P=0.144,P=0.112).The AUC of CEUS+CPI was significantly higher than that of CEUS(0.890 vs 0.825,P=0.013)by staff radiologists.CONCLUSION Compared with routine CEUS,CPI could provide specific information on the hemodynamic features of liver lesions and help to differentiate atypical hemangioma from liver metastases in patients with CRC,even for senior radiologists.展开更多
In the study,a total of 20 red-eared turtles( half male and half female) were selected to conduct the measurement of liver size and intrahepatic blood flow of red-eared turtles by color Doppler ultrasound. The results...In the study,a total of 20 red-eared turtles( half male and half female) were selected to conduct the measurement of liver size and intrahepatic blood flow of red-eared turtles by color Doppler ultrasound. The results showed that the right hepatic lobe could be scanned through the right carotid anterior acoustic window,and the left hepatic lobe could be scanned through the left carotid anterior acoustic window,but the vision would be obstructed by the air in trachea. The liver could also be scanned through the left femoral anterior acoustic window and the right femoral anterior acoustic window when filling of bladder was good. The correlation regression analysis suggested that estimated values of liver showed no linear relationship with weight,the longest back curve and the widest back curve. Through the study,the normal indicators for ultrasound examination of red-eared turtle liver were established,in order to provide a reference for examination of turtle liver.展开更多
Retrospective study was done at KAUH to determine the sonographic characteristics in predicting the malignancy of thyroid nodules. The sample was 120 patients consisting of 70 benign nodules and 50 malignant nodules. ...Retrospective study was done at KAUH to determine the sonographic characteristics in predicting the malignancy of thyroid nodules. The sample was 120 patients consisting of 70 benign nodules and 50 malignant nodules. Out of 120 patients, 106 (88.3%) female and 14 (11.7%) male patients. Out of 106 female patients, 64 (91.45) had benign and 42 had malignant thyroid nodules. Out of 14 (11.7) male patients, 6 had benign and 8 had malignant thyroid nodules. The youngest patient in our study was 31 years and the oldest patient was 76 years. The common range of patients age was ≥ 60 years and consisting of twenty (28.6%) benign thyroid nodules and fourteen (28%) malignant thyroid nodules. The majority of patients’ age group with malignant thyroid nodules were between 50 - 60 years and consisting of twenty (40%) malignant nodules. In our study, according to the result of gray scale and color Doppler ultrasonography, hypo-echogenicity, solid echo structure, micro-calcification and intra-nodular vascularity were the significant characteristics of malignancy in nodules with sensitivity (72%, 74%, 48% and 88% respectively), specificity (66%, 63%, 94% and 69% respectively), PPV (60%, 59%, 86% and 67% respectively) and NPV (77%, 77%, 72% and 89% respectively).展开更多
文摘BACKGROUND Endometrial lesions include endometrial cancer and inferior fibroids.Among them,endometrial cancer as a malignant tumor seriously endangers the life and health of patients.Ultrasonography is an important means of diagnosing female reproductive system diseases,and it is of critical value for the early diagnosis of endometrial cancer.However,different ultrasound inspection programs have achieved different results.It is of great significance to choose a suitable inspection program.AIM To explore the diagnostic efficacy of different ultrasonic examination methods in clinical endometrial lesions.METHODS The 140 patients with endometrial lesions who were treated in our hospital from April 2018 to October 2019 were used as the research subjects.All patients underwent transvaginal color ultrasound and transabdominal color ultrasound.We compared the diagnostic coincidence and image display effects of the two different examination methods,and the endometrial thickness,blood flow,uterine effusion and resistance index of different diseases were observed by transvaginal color ultrasound.RESULTS The diagnostic coincidence rate of all types of diseases of transvaginal color ultrasound was significantly higher than that of transabdominal color ultrasound(P=0.001,0.005,0.001 and 0.001).In addition,the excellent and good rate of image display of transvaginal color ultrasound was higher than that of transabdominal color ultrasound(P=0.001).There were significant differences in endometrial thickness in patients with different types of endometrial lesions through the transvaginal color examination(P=0.001).The incidence rate of uterine effusion in patients with endometrial carcinoma was significantly higher than that in patients with other types of endometrial lesions(P=0.001),and the rate of the blood flow was the highest(P=0.001).The comparison of blood flow resistance index indicated that the blood flow resistance index in endometrial cancer patients was the lowest,which shows that the difference was statistically significant(P=0.001).CONCLUSION The overall diagnostic efficacy of transvaginal color ultrasound in the clinical diagnosis of endometrial lesions is better than that of transabdominal color ultrasound,which held higher diagnostic coincidence rate and image display effect.There were significant differences in the thickness of the endometrium and the blood flow in different types of lesions.
文摘AIM:To observe the imaging features of color Doppler ultrasound(CDU)and computed tomography(CT)or computed tomography dacryocystography(CT-DCG)in different types of lacrimal sac space-occupying lesions(SOLs).METHODS:This retrospective case series study included 21 patients with lacrimal sac SOLs who underwent lacrimal sac surgery between January 2018 and March 2022.The imaging features of CDU and CT or CT-DCG in these patients were extracted from the examination cloud system.The images were observed and analyzed.RESULTS:The detection rate of lacrimal SOLs between CDU(21/21,100%)and CT or CT-DCG(20/21,95.2%)had no statistically significant difference(P=1.0).CDU could detect the blood flow signals in all SOLs except mucocele and mucopeptide concretion.Among them,polyps had characteristic imaging changes on CDU and CT-DCG.The mucoceles and mucopeptide concretions had characteristic imaging changes on CDU,which could provide more information for differential diagnosis.CONCLUSION:The morphology and internal blood flow signals of lacrimal sac SOLs can be observed using CDU.CT or CT-DCG has advantages in observing structural damage around the lacrimal sac mass.Therefore,CDU may be used as a routine examination to exclude lacrimal sac SOLs before dacryocystorhinostomy in the absence of preoperative CT or CT-DCG.
基金Supported by the Natural Science Foundation of Shanghai, No. 034119921
文摘AIM: To study the portal hemodynamics and their relationship with the size of esophageal varices seen at endoscopy and to evaluate whether these Doppler ultrasound parameters might predict variceal bleeding in patients with liver cirrhosis and portal hypertension.METHODS: One hundred and twenty cirrhotic patients with esophageal varices but without any previous bleeding were enrolled in the prospective study. During a 2-year observation period, 52 patients who had at least one episode of acute esophageal variceal hemorrhage constituted the bleeding group, and the remaining 68 patients without any previous hemorrhage constituted the non-bleeding group. All patients underwent endoscopy before or after color Doppler-ultrasonic examination, and images were interpreted independently by two endoscopists. The control group consisted of 30 healthy subjects, matched to the patient group in age and gender. Measurements of diameter,flow direction and flow velocity in the left gastric vein (LGV) and the portal vein (PV) were done in all patients and controls using color Doppler unit. After baseline measurements, 30 min after oral administration of 75 g glucose in 225 mL, changes of the diameter, flow velocity and direction in the PV and LGV were examined in 60 patients with esophageal varices and 15 healthy controls.RESULTS: The PV and LGV were detected successfully in 115 (96%) and 105 (88%) of 120 cirrhotic patients,respectively, and in 27 (90%) and 21 (70%) of 30 healthy controls, respectively. Among the 120 cirrhotic patients,37 had F1, 59 had F2, and 24 had F3 grade varices. Compared with the healthy controls, cirrhotic group had a significantly lower velocity in the PV, a significantly greater diameter of the PV and LGV, and a higher velocity in the LGV. In the cirrhotic group, no difference in portal flow velocity and diameter were observed between patients with or without esophageal variceal bleeding (EVB). However, the diameter and blood flow velocity of the LGV were significantly higher for EVB (+) group compared with EVB (-) group (P＜0.01).Diameter of the LGV increased with enlarged size of varices.There were differences between F1 and F2, F1 and F3 varices, but no differences between F2 and F3 varices (P = 0.125). However, variceal bleeding was more frequent in patients with a diameter of LGV ＞6 mm. The flow velocity in the LGV of healthy controls was 8.70±1.91 cm/s (n = 21). In patients with liver cirrhosis, it was 10.3±2.1 cm/s (n = 12) when the flow was hepatopetal and 13.5±2.3 cm/s (n = 87) when it was hepatofugal. As the size of varices enlarged, hepatofugal flow velocity increased (P＜0.01) and was significantly different between patients with F1 and F2 varices and between patients with F2 and F3 varices. Variceal bleeding was more frequent in patients with a hepatofugal flow velocity ＞15 cm/s (32 of 52 patients, 61.5%). Within the bleeding group, the mean LGV blood flow velocity was 16.6±2.62 cm/s. No correlation was observed between the portal blood flow velocity and EVB. In all healthy controls, the flow direction in the LGV was hepatopetal, toward the PV. In patients with F1 varices, flow direction was hepatopetal in 10 patients, to-and-fro state in 3 patients, and hepatofugal in the remaining 18. The flow was hepatofugal in 91% patients with F2 and all F3 varices. Changes in diameter of the PV and LGV were not significant before and after ingestion of glucose (PV: 1.41±1.5 cm before and 1.46±1.6 cm after; LGV: 0.57±1.7 cm before and 0.60±1.5 cm after).Flow direction in the LGV was hepatopetal and to-and-fro in 16 patients and hepatofugal in 44 patients before ingestion of glucose. Flow direction changed to hepatofugal in 9 of 16 patients with hepatopetal and to-and-fro blood flow after ingestion of glucose. In 44 patients with hepatofugal blood flow in the LGV, a significant increase in hepatofugal flow velocity was observed in 38 of 44 patients (86%) with esophageal vadces. There was a relationship between the percentage changes in flow velocity and the size of varices. Patients who responded excessively to food ingestion might have a high risk for bleeding. The changes of blood flow velocity in the LGV were greater than those in the PV (LGV: 28.3±26.1%, PV: 7.2±13.2%, P＜0.01), whereas no significant changes in the LGV occurred before and after ingestion of glucose in the control subjects.CONCLUSION: Hemodynamics of the PV is unrelated to the degree of endoscopic abnormalities in patients with liver cirrhosis. The most important combinations are endoscopic findings followed by the LGV hemodynamics.Duplex-Doppler ultrasonography has no value in the identification of patients with cirrhosis at risk of variceal bleeding. Hemodynamics of the LGV appears to be superior to those of the PV in predicting bleeding.
文摘<strong>Objective</strong><span style="font-family:;" "=""><span style="font-family:Verdana;"><strong>: </strong>To evaluate the clinical value of transcranial color Doppler ultrasound (TCCD) in assessing cerebral function after cardiopulmonary resuscitation (CPR). </span><b><span style="font-family:Verdana;">Methods</span></b><span style="font-family:Verdana;">: A prospective study was conducted in 52 patients with cardiac arrest treated by CPR from January 2018 to January 2020, and its clinical data were analyzed</span></span><span style="font-family:Verdana;">. </span><span style="font-family:;" "=""><span style="font-family:Verdana;">According to classification of cerebral performance category (CPC), 31 cases (CPC grade 1 - 2) were selected in the good prognosis group and 21 cases (CPC grade 3 - 5) in the poor prognosis group. The cerebral blood flow was measured by transcranial Doppler ultrasound (TCCD) 24 h after CPR, and the differences were compared between the two groups in stroke index, diastolic blood flow velocity (Vd), systolic peak blood flow velocity (Vs) and mean peak blood flow velocity (Vm). The ROC curve of cerebral blood flow after CPR was drawn to predict the prognosis of brain function. </span><b><span style="font-family:Verdana;">Results</span></b><span style="font-family:Verdana;">: The data showed that the pulsatility index of middle cerebral artery of the poor prognosis group decreased within 24 h</span></span><span style="font-family:Verdana;">;</span><span style="font-family:Verdana;">the difference between the two groups was statistically significant (p < 0.05);the Vd, Vs, Vm increased in the good prognosis group</span><span style="font-family:Verdana;">;</span><span style="font-family:;" "=""><span style="font-family:Verdana;">the difference between the two groups was statistically significant (p < 0.05). The ROC curve of cerebral blood flow after CPR was drawn to predict the prognosis of brain function, and the results showed that the area under the curve and the optimal critical value of cerebral blood flow were 0.731 and 5.69. The sensitivity and specificity were 67.3% and 79.1% respectively. </span><b><span style="font-family:Verdana;">Conclusion</span></b><span style="font-family:Verdana;">: The cerebral blood flow increase in the early stage of successful CPR is positively correlated with the prognosis of cerebral functional resuscitation. Monitoring intracranial blood flow after CPR by TCCD has clinical value to evaluate prognosis of brain function.</span></span>
文摘Objective To evaluate endometrial and subendometrial blood flows measured by vaginal color Doppler ultrasound as a predicator of endometrial receptivity in women undergoing IVF treatment. Methods A total of 119 infertile patients undergoing the first IVF/ICSI-ET cycle were recruited. Three groups were divided according to a color Doppler ultrasound exami- nation performed on the day of hCG injection. Group A, endometrial and subendometrial blood flows were 2 branches and below; group B, endometrial and subendometrial blood flows were between 3 and 4 branches; group C, endometrial and subendometrial blood flows were 5 branches and above. Patients were transferred 1-3 embryos each. Demographic data, ovarian responses, endometrial thickness, PI, RI, development of embryo and IVF result among groups were compared. Results Demographic data, ovarian responses, endometrial thickness, PI, RI and development of embryo among groups have no significant difference. The pregnancy rate of group A was significantly lower than that of group B (P<0.05) and group C (P<0.01). The implantation rate of group A was significantly lower than than of group C (P<0.01). There was no significant difference of the rate of pregnancy and implantation between group B and group C (P>0.05). Conclusion Endometrial and subendometrial blood flows measured by vaginal color Doppler ultrasound is a good predicator of pregnancy during IVF treatment. A good endometrial and subendometrial blood flows is benefit for the result of IVF.
基金Supported by Capital Medical Development Program,No.2018-2-2154National Natural Science Foundation of China,No.81773286
文摘BACKGROUND In clinical practice,the diagnosis is sometimes difficult with contrast-enhanced ultrasound(CEUS)when the case has an atypical perfusion pattern.Color parametric imaging(CPI)is an analysis software for CEUS with better detection of temporal differences in CEUS imaging using arbitrary colors.It measures the differences in arrival time of the contrast agent in lesions so that the perfusion features of atypical hemangioma and colorectal cancer(CRC)liver metastasis can be distinguished.AIM To evaluate the role of a novel type of CPI of CEUS in the differential diagnosis of atypical hemangioma from liver metastases in patients with a history of CRC.METHODS From January 2016 to July 2018,42 patients including 20 cases of atypical hemangioma and 22 cases of liver metastases from CRC were enrolled.These patients had a mean age of 60.5±9.3 years(range:39-75 years).All patients received ultrasound,CEUS and CPI examinations.Resident and staff radiologists independently and retrospectively reviewed CEUS and CPI images.Two sets of criteria were assigned:(1)Routine CEUS alone;and(2)CEUS and CPI.The diagnostic sensitivity,specificity,accuracy and receiver operating characteristic(ROC)curve of resident and staff radiologists were analyzed.RESULTS The following CPI features were significantly different between liver hemangioma and liver metastases analyzed by staff and resident radiologists:Peripheral nodular enhancement(65%-70.0%vs 4.5%-13.6%,P<0.001,P=0.001),mosaic/chaotic enhancement(5%-10%vs 68.2%-63.6%,P<0.001,P<0.001)and feeding artery(20%vs 59.1%-54.5%,P=0.010,P=0.021).CPI imaging offered significant improvements in detection rates compared with routine CEUS in both resident and staff groups.By resident radiologists,the specificity and accuracy of CEUS+CPI were significantly increased compared with that of CEUS(77.3%vs 45.5%,P=0.030;78.6%vs 50.0%,P=0.006).In addition,the area under the curve(AUC)of CEUS+CPI was significantly higher than that of CEUS(0.803 vs 0.757,P=0.036).By staff radiologists,accuracy was improved in CEUS+CPI(81.0%vs 54.8%,P=0.010),whereas no significant differences in specificity and sensitivity were found(P=0.144,P=0.112).The AUC of CEUS+CPI was significantly higher than that of CEUS(0.890 vs 0.825,P=0.013)by staff radiologists.CONCLUSION Compared with routine CEUS,CPI could provide specific information on the hemodynamic features of liver lesions and help to differentiate atypical hemangioma from liver metastases in patients with CRC,even for senior radiologists.
文摘In the study,a total of 20 red-eared turtles( half male and half female) were selected to conduct the measurement of liver size and intrahepatic blood flow of red-eared turtles by color Doppler ultrasound. The results showed that the right hepatic lobe could be scanned through the right carotid anterior acoustic window,and the left hepatic lobe could be scanned through the left carotid anterior acoustic window,but the vision would be obstructed by the air in trachea. The liver could also be scanned through the left femoral anterior acoustic window and the right femoral anterior acoustic window when filling of bladder was good. The correlation regression analysis suggested that estimated values of liver showed no linear relationship with weight,the longest back curve and the widest back curve. Through the study,the normal indicators for ultrasound examination of red-eared turtle liver were established,in order to provide a reference for examination of turtle liver.
文摘Retrospective study was done at KAUH to determine the sonographic characteristics in predicting the malignancy of thyroid nodules. The sample was 120 patients consisting of 70 benign nodules and 50 malignant nodules. Out of 120 patients, 106 (88.3%) female and 14 (11.7%) male patients. Out of 106 female patients, 64 (91.45) had benign and 42 had malignant thyroid nodules. Out of 14 (11.7) male patients, 6 had benign and 8 had malignant thyroid nodules. The youngest patient in our study was 31 years and the oldest patient was 76 years. The common range of patients age was ≥ 60 years and consisting of twenty (28.6%) benign thyroid nodules and fourteen (28%) malignant thyroid nodules. The majority of patients’ age group with malignant thyroid nodules were between 50 - 60 years and consisting of twenty (40%) malignant nodules. In our study, according to the result of gray scale and color Doppler ultrasonography, hypo-echogenicity, solid echo structure, micro-calcification and intra-nodular vascularity were the significant characteristics of malignancy in nodules with sensitivity (72%, 74%, 48% and 88% respectively), specificity (66%, 63%, 94% and 69% respectively), PPV (60%, 59%, 86% and 67% respectively) and NPV (77%, 77%, 72% and 89% respectively).
