AIM To validate the feasibility of high resolution computed tomography(HRCT) of the lung prior to computed tomography angiography(CTA) in assessing incidental thoracic findings during endovascular aortic aneurysm repa...AIM To validate the feasibility of high resolution computed tomography(HRCT) of the lung prior to computed tomography angiography(CTA) in assessing incidental thoracic findings during endovascular aortic aneurysm repair(EVAR) planning or follow-up.METHODS We conducted a retrospective study among 181 patients(143 men, mean age 71 years, range 50-94) referred to our centre for CTA EVAR planning or followup. HRCT and CTA were performed before or after 1 or 12 mo respectively to EVAR in all patients. All HRCT examinations were reviewed by two radiologists with 15 and 8 years experience in thoracic imaging. The results were compared with histology, bronchoscopy or follow-up HRCT in 12, 8 and 82 nodules respectively. RESULTS There were a total of 102 suspected nodules in 92 HRCT examinations, with a mean of 1.79 nodules per patient and an average diameter of 9.2 mm(range 4-56 mm). Eightynine out of 181 HRCTs resulted negative for the presence of suspected nodules with a mean smoking history of 10 pack-years(p-y, range 5-18 p-y). Eighty-two out of 102(76.4%) of the nodules met criteria for computed tomography follow-up, to exclude the malignant evolution. Of the remaining 20 nodules, 10 out of 20(50%) nodules, suspected for malignancy, underwent biopsy and then surgical intervention that confirmed the neoplastic nature: 4(20%) adenocarcinomas, 4(20%) squamous cell carcinomas, 1(5%) small cell lung cancer and 1(5%) breast cancer metastasis); 8 out of 20(40%) underwent bronchoscopy(8 pneumonia) and 2 out of 20(10%) underwent biopsy with the diagnosis of sarcoidosis.CONCLUSION HRCT in EVAR planning and follow-up allows to correctly identify patients requiring additional treatments, especially in case of lung cancer.展开更多
目的评估单能量去金属伪影(single energy metal artifact reduction,SEMAR)技术在腹主动脉腔内修复术(endovascular aortic repair,EVAR)Ⅰ型内漏弹簧圈栓塞术后CTA复查中的应用价值。方法回顾性分析2019年12月至2022年3月在中山大学...目的评估单能量去金属伪影(single energy metal artifact reduction,SEMAR)技术在腹主动脉腔内修复术(endovascular aortic repair,EVAR)Ⅰ型内漏弹簧圈栓塞术后CTA复查中的应用价值。方法回顾性分析2019年12月至2022年3月在中山大学附属第一医院行Ⅰ型内漏行弹簧圈栓塞术及全腹CTA检查的19例次患者图像,对原始数据分别用NO-SEMAR及SEMAR技术进行重建,对比两组图像主观评分及伪影周围对比噪声比(constrast-to-niose ratio,CNR)、伪影指数(artifacts index,AI)和伪影最大直径。结果使用SEMAR技术后,图像质量主观及CNR明显升高(P<0.05),AI及伪影最大直径明显降低(P<0.05)。结论SEMAR技术可减少弹簧圈伪影,提高CTA图像质量,能清晰显示瘤体、支架、弹簧圈与内漏情况,有利于EVAR术后Ⅰ型内漏患者的诊疗。展开更多
文摘AIM To validate the feasibility of high resolution computed tomography(HRCT) of the lung prior to computed tomography angiography(CTA) in assessing incidental thoracic findings during endovascular aortic aneurysm repair(EVAR) planning or follow-up.METHODS We conducted a retrospective study among 181 patients(143 men, mean age 71 years, range 50-94) referred to our centre for CTA EVAR planning or followup. HRCT and CTA were performed before or after 1 or 12 mo respectively to EVAR in all patients. All HRCT examinations were reviewed by two radiologists with 15 and 8 years experience in thoracic imaging. The results were compared with histology, bronchoscopy or follow-up HRCT in 12, 8 and 82 nodules respectively. RESULTS There were a total of 102 suspected nodules in 92 HRCT examinations, with a mean of 1.79 nodules per patient and an average diameter of 9.2 mm(range 4-56 mm). Eightynine out of 181 HRCTs resulted negative for the presence of suspected nodules with a mean smoking history of 10 pack-years(p-y, range 5-18 p-y). Eighty-two out of 102(76.4%) of the nodules met criteria for computed tomography follow-up, to exclude the malignant evolution. Of the remaining 20 nodules, 10 out of 20(50%) nodules, suspected for malignancy, underwent biopsy and then surgical intervention that confirmed the neoplastic nature: 4(20%) adenocarcinomas, 4(20%) squamous cell carcinomas, 1(5%) small cell lung cancer and 1(5%) breast cancer metastasis); 8 out of 20(40%) underwent bronchoscopy(8 pneumonia) and 2 out of 20(10%) underwent biopsy with the diagnosis of sarcoidosis.CONCLUSION HRCT in EVAR planning and follow-up allows to correctly identify patients requiring additional treatments, especially in case of lung cancer.
文摘目的评估单能量去金属伪影(single energy metal artifact reduction,SEMAR)技术在腹主动脉腔内修复术(endovascular aortic repair,EVAR)Ⅰ型内漏弹簧圈栓塞术后CTA复查中的应用价值。方法回顾性分析2019年12月至2022年3月在中山大学附属第一医院行Ⅰ型内漏行弹簧圈栓塞术及全腹CTA检查的19例次患者图像,对原始数据分别用NO-SEMAR及SEMAR技术进行重建,对比两组图像主观评分及伪影周围对比噪声比(constrast-to-niose ratio,CNR)、伪影指数(artifacts index,AI)和伪影最大直径。结果使用SEMAR技术后,图像质量主观及CNR明显升高(P<0.05),AI及伪影最大直径明显降低(P<0.05)。结论SEMAR技术可减少弹簧圈伪影,提高CTA图像质量,能清晰显示瘤体、支架、弹簧圈与内漏情况,有利于EVAR术后Ⅰ型内漏患者的诊疗。
