Objective: To validate multi-slice three-dimensional spiral CT cholangiography (3-D CTC) in clinical di- agnosis of biliary diseases. Methods: This study included 146 patients with bili- ary diseases, involving 73 cas...Objective: To validate multi-slice three-dimensional spiral CT cholangiography (3-D CTC) in clinical di- agnosis of biliary diseases. Methods: This study included 146 patients with bili- ary diseases, involving 73 cases of biliary tumor, 87 cases of radioparent calculus, 12 cases of post cholan- gio-jejunostomy and one case of congenital choledo- chocyst. The data of thin-slice volumetric CT scan were sent to the workstation (GE Advantage Win- dows 3. 1). Rational 3-D CTC including maximum intensity projection, minimum intensity projection, surface shaded display, CT virtual endoscopy and ray sumption was performed. The diagnostic accura- cy of 3-D CTC was compared with that of conven- tional CT, ultrasonography and endoscopic retro- grade cholangiopancreaticography (ERCP). Results: Different biliary diseases showed distinct ima- ging manifestations on 3-D CTC, As a new technique for assessing the status of post cholangio-jejunosto- my, 3-D CTC was superior to conventional CT, ul- trasonography and ERCP in diagnosis of negative bil- iary calculus, extrahepatic cholangiocarcinoma, cancer embolus of the biliary duct, carcinoma of the pancreas head and periampullar carcinoma. It was also superior to conventional CT, ultrasonography or equal to ERCP in diagnosis of hilar cholangiocarcino- ma, but inferior to conventional CT and ultrasonog- raphy in diagnosis of gallbladder cancer. Conclusion: 3-D CTC as a non-invasive and sensitive technique for the diagnosis of biliary diseases with high diagnostic accuracy will greatly increase the de- tection rate of biliary diseases.展开更多
BACKGROUND: The study aims to investigate the occurrence of post-traumatic stress disorder(PTSD) after earthquakes among the elderly. METHODS: Data from cross-sectional studies focusing on the prevalence of PTSD after...BACKGROUND: The study aims to investigate the occurrence of post-traumatic stress disorder(PTSD) after earthquakes among the elderly. METHODS: Data from cross-sectional studies focusing on the prevalence of PTSD after earthquakes among the elderly were collected from Pub Med, EMBASE, Cochrane Library, and China National Knowledge Infrastructure in December 2019. The search terms included post-traumatic stress disorder, earthquake, and elderly. This study used Review Manager 5.0 to evaluate the impact of the results. In addition, forest plots, sensitivity analysis, and bias analysis were carried out on the included articles. The combined estimate of the risk ratio and the standard deviation of the 95% confidence interval(95% CI) were measurements of the size of the effect.RESULTS: There were 4,834 patients included from 10 eligible studies. The sample sizes of PTSD group and non-PTSD group were 1,277 and 3,557, respectively. The meta-analysis showed that the overall occurrence of PTSD after earthquakes among the elderly was 0.25;the occurrence in females was higher than that in males, and the occurrence in the same province indicated little difference(Wenchuan city 0.25 and Ya'an city 0.24).CONCLUSIONS: After earthquakes, the occurrence of PTSD is higher among the elderly than among other age groups, and higher among the females than among the males, while there is little difference among different areas within the same province. This indicated that prioritized specific psychological interventions should be provided to the aged and the females.展开更多
Objective: To analyze the pre- and post-contrast CT findings of liver focal nodular hyperplasia (FNH) so as to improve their diagnostic accuracy. Methods: Pre- and post-contrast tri-phase (arterial, portal venous and ...Objective: To analyze the pre- and post-contrast CT findings of liver focal nodular hyperplasia (FNH) so as to improve their diagnostic accuracy. Methods: Pre- and post-contrast tri-phase (arterial, portal venous and delayed) scans were performed in 21 patients with FNH proved surgically and patholo- gically. Transcatheter arterial angiography was per- formed in 2 patients. Results: Pre-contrast scans showed hypodensity in 16 patients, isodensity in 5, and punctate, streak and radial scars in 12. Except central scar, all lesions were markedly and homogeneously enhanced in the arterial phase. Nine of the 21 patients showed dilated and tortuous arteries in the central and peripheral areas of the focus. In the portal venous phase, focal density was decreased, though still higher or slightly higher in FNH than in parenchyma. In the delayed phase, the lesions showed isodensity or slight hypo- density. Enhanced capsules were seen in 3 patients. Dilated arteries and drainage veins were seen on an- giographic images. Conclusion: The characteristic manifestations of FNH on multiphasic helical CT scan are of great sig- nificance in diagnosing FNH and choosing viable therapy.展开更多
文摘Objective: To validate multi-slice three-dimensional spiral CT cholangiography (3-D CTC) in clinical di- agnosis of biliary diseases. Methods: This study included 146 patients with bili- ary diseases, involving 73 cases of biliary tumor, 87 cases of radioparent calculus, 12 cases of post cholan- gio-jejunostomy and one case of congenital choledo- chocyst. The data of thin-slice volumetric CT scan were sent to the workstation (GE Advantage Win- dows 3. 1). Rational 3-D CTC including maximum intensity projection, minimum intensity projection, surface shaded display, CT virtual endoscopy and ray sumption was performed. The diagnostic accura- cy of 3-D CTC was compared with that of conven- tional CT, ultrasonography and endoscopic retro- grade cholangiopancreaticography (ERCP). Results: Different biliary diseases showed distinct ima- ging manifestations on 3-D CTC, As a new technique for assessing the status of post cholangio-jejunosto- my, 3-D CTC was superior to conventional CT, ul- trasonography and ERCP in diagnosis of negative bil- iary calculus, extrahepatic cholangiocarcinoma, cancer embolus of the biliary duct, carcinoma of the pancreas head and periampullar carcinoma. It was also superior to conventional CT, ultrasonography or equal to ERCP in diagnosis of hilar cholangiocarcino- ma, but inferior to conventional CT and ultrasonog- raphy in diagnosis of gallbladder cancer. Conclusion: 3-D CTC as a non-invasive and sensitive technique for the diagnosis of biliary diseases with high diagnostic accuracy will greatly increase the de- tection rate of biliary diseases.
文摘BACKGROUND: The study aims to investigate the occurrence of post-traumatic stress disorder(PTSD) after earthquakes among the elderly. METHODS: Data from cross-sectional studies focusing on the prevalence of PTSD after earthquakes among the elderly were collected from Pub Med, EMBASE, Cochrane Library, and China National Knowledge Infrastructure in December 2019. The search terms included post-traumatic stress disorder, earthquake, and elderly. This study used Review Manager 5.0 to evaluate the impact of the results. In addition, forest plots, sensitivity analysis, and bias analysis were carried out on the included articles. The combined estimate of the risk ratio and the standard deviation of the 95% confidence interval(95% CI) were measurements of the size of the effect.RESULTS: There were 4,834 patients included from 10 eligible studies. The sample sizes of PTSD group and non-PTSD group were 1,277 and 3,557, respectively. The meta-analysis showed that the overall occurrence of PTSD after earthquakes among the elderly was 0.25;the occurrence in females was higher than that in males, and the occurrence in the same province indicated little difference(Wenchuan city 0.25 and Ya'an city 0.24).CONCLUSIONS: After earthquakes, the occurrence of PTSD is higher among the elderly than among other age groups, and higher among the females than among the males, while there is little difference among different areas within the same province. This indicated that prioritized specific psychological interventions should be provided to the aged and the females.
文摘Objective: To analyze the pre- and post-contrast CT findings of liver focal nodular hyperplasia (FNH) so as to improve their diagnostic accuracy. Methods: Pre- and post-contrast tri-phase (arterial, portal venous and delayed) scans were performed in 21 patients with FNH proved surgically and patholo- gically. Transcatheter arterial angiography was per- formed in 2 patients. Results: Pre-contrast scans showed hypodensity in 16 patients, isodensity in 5, and punctate, streak and radial scars in 12. Except central scar, all lesions were markedly and homogeneously enhanced in the arterial phase. Nine of the 21 patients showed dilated and tortuous arteries in the central and peripheral areas of the focus. In the portal venous phase, focal density was decreased, though still higher or slightly higher in FNH than in parenchyma. In the delayed phase, the lesions showed isodensity or slight hypo- density. Enhanced capsules were seen in 3 patients. Dilated arteries and drainage veins were seen on an- giographic images. Conclusion: The characteristic manifestations of FNH on multiphasic helical CT scan are of great sig- nificance in diagnosing FNH and choosing viable therapy.
