Objective:To investigate the diagnostic value of multi-slice spiral CT(MSCT)for patients with acute appendicitis(AA).Methods:Fifty patients with suspected AA who visited the hospital from January 2023 to January 2025 ...Objective:To investigate the diagnostic value of multi-slice spiral CT(MSCT)for patients with acute appendicitis(AA).Methods:Fifty patients with suspected AA who visited the hospital from January 2023 to January 2025 were selected as samples.All patients underwent MSCT and ultrasound diagnosis,and the diagnostic efficacy of MSCT was analyzed in comparison with pathology.Results:Pathology indicated 40 positive and 10 negative cases,ultrasound indicated 30 positive and 20 negative cases,and MSCT indicated 39 positive and 11 negative cases.The diagnostic efficacy of MSCT was higher than that of ultrasound(P<0.05).The accuracy of pathological classification of MSCT was higher than that of ultrasound(P<0.05).The detection rate of MSCT imaging indicators in AA patients was higher than that in non-AA patients(P<0.05).Conclusion:MSCT has high diagnostic efficacy in AA patients and can assist physicians in determining pathological classification.展开更多
Objective: To evaluate three-dimensional bronchial artery imaging charactersin central lung cancer and applied values with multi-slice spiral CT (MSCT) to provide theoreticalevidence on blood supply and intervention t...Objective: To evaluate three-dimensional bronchial artery imaging charactersin central lung cancer and applied values with multi-slice spiral CT (MSCT) to provide theoreticalevidence on blood supply and intervention therapy. Methods: Eighteen patients with central lungcancer underwent MSCT with real time helical thin-slice CT scanning. Three-dimensional bronchialartery reconstruction was done at the console work-station. The space anatomical characters ofbronchial artery were observed through different rotations. Results: For 6 cases, thethree-dimensional images of bronchial artery (33.33%) could exactly show the origins, the routes(lung inner segment and mediatism segment) and the diameters of bronchial arteries. Vision rate ofbronchial arteries was the highest in pulmonary artery stricture and truncation groups, and thevessels' diameter became larger apparently. These characters demonstrated blood supply of this kindof central lung cancer come from bronchial artery. Volume rendering images were the best ones amongthree-dimensional images. Conclusion: Three-dimensional imaging with MSCT in bronchial artery canreveal the anatomical characters of bronchial artery and provide theoretical evidence on bloodsupply and intervention therapy of central lung cancer.展开更多
Objective: To study the clinical significance of multi-slice spiral CT 3-dimensional (3D) portography in portal vein tumor thrombosis of hepatocellular cacinoma.Methods: 57 cases undergoing 3D portography were collect...Objective: To study the clinical significance of multi-slice spiral CT 3-dimensional (3D) portography in portal vein tumor thrombosis of hepatocellular cacinoma.Methods: 57 cases undergoing 3D portography were collected, of which 6 cases were normal, 5 cases were subjected to cirrhosis and hypertension of portal vein, 42 cases had portal tumor thrombus of hepatic cancer, and the remaining 4 cases showed lymph node enlargment in hilar of liver. All data of the patients came from conventional multi-slice spiral CT double phase of liver. Contrast media was 1.5–2 ml/kg with the injection rate being 2.5–3 ml/s. Axis and 3D portography was analyzed and compared in 42 cases of portal tumor thrombus of hepatic cancer.Results: According to portal tumor thrombus position, 42 cases were fallen into three categories: left (13 cases), right (20 cases), main (9 cases) of potal vein. There was no difference between axis and 3D portography in displaying portal tumor thrombus of hepatic cancer (P>0.05), but 3D portography showing collateral branches was better than axis portography after main portal vein thrombus.Conclusion: Multi-slice spiral CT 3D portography can display the position and types of portal tumor thrombus of hepatic cancer. 3D combined with axis portography can better evaluate the portal tumor thrombus of hepatic cancer and guide to select the therapies. Key words portal vein - tumor thrombus - multi-slice CT - 3 dimension imaging展开更多
计算机断层成像(computed tomography,CT)是一种高精度、无创的医学影像诊断设备,其扫描速度快、图像分辨率高、诊断结果精确,被广泛应用于肿瘤、神经系统、心血管、骨骼等疾病的诊断[1]。CT设备作为临床诊断必备的大型医学影像设备之一...计算机断层成像(computed tomography,CT)是一种高精度、无创的医学影像诊断设备,其扫描速度快、图像分辨率高、诊断结果精确,被广泛应用于肿瘤、神经系统、心血管、骨骼等疾病的诊断[1]。CT设备作为临床诊断必备的大型医学影像设备之一,近年在医院中的保有量保持着高速增长。为了满足影像科诊断工作的需要,我院于2020年购入1台东软NeuViz 64 In CT机,随着设备的投入使用,如何降低故障发生率、保证开机率成为临床维修人员需要解决的重要问题[2]。本研究主要介绍我院东软NeuViz 64 In CT使用中的3个故障维修案例和日常维护保养措施,现报道如下。展开更多
BACKGROUND: During the past years, the number of liver transplantation has increased greatly, but the number of available organs has not increased. In view of the critical shortage of organs, the indications for livin...BACKGROUND: During the past years, the number of liver transplantation has increased greatly, but the number of available organs has not increased. In view of the critical shortage of organs, the indications for living-related liver transplantation (LRLT) have broadened since experience with the procedure has been achieved. This study was undertaken to assess the value of multi-slice spiral CT (MSCT) angiography in evaluating the hepatic arterial and veinous anatomy of potential donors for LRLT. METHODS: MSCT was performed after intravenous injection of contrast material at 3 ml/s. The total dose was calculated as 2 ml/kg. Twenty LRLT donors (2 men and 18 women) were subjected to MSCT angiography of hepatic blood vessels. These were generated by volume rendering and maximum intensity projection, while curved planar reformation was added in 5 patients. RESULTS: We identified 10 important hepatic vascular variants in 9 of the 20 donors (4 arterial, 4 venous, and 2 portal venous variants). In hepatic arterial variants, two had a replaced right hepatic artery arising from the superior mesenteric artery, an accessory right hepatic artery from the superior mesenteric artery and a replaced left hepatic artery arising from the left gastric artery. In hepatic venous variants, three had an accessory inferior right hepatic vein and one had two accessory inferior right hepatic veins. In hepatic portal venous variants, two had trifurcation of the main portal vein. CONCLUSIONS: As a non-invasive and reliable method, MSCT angiography is of value in the clinical evaluation of LRLT donors. MSCT angiography should be recommended as a routine preoperative examination for potential LRLT donors.展开更多
文摘Objective:To investigate the diagnostic value of multi-slice spiral CT(MSCT)for patients with acute appendicitis(AA).Methods:Fifty patients with suspected AA who visited the hospital from January 2023 to January 2025 were selected as samples.All patients underwent MSCT and ultrasound diagnosis,and the diagnostic efficacy of MSCT was analyzed in comparison with pathology.Results:Pathology indicated 40 positive and 10 negative cases,ultrasound indicated 30 positive and 20 negative cases,and MSCT indicated 39 positive and 11 negative cases.The diagnostic efficacy of MSCT was higher than that of ultrasound(P<0.05).The accuracy of pathological classification of MSCT was higher than that of ultrasound(P<0.05).The detection rate of MSCT imaging indicators in AA patients was higher than that in non-AA patients(P<0.05).Conclusion:MSCT has high diagnostic efficacy in AA patients and can assist physicians in determining pathological classification.
文摘Objective: To evaluate three-dimensional bronchial artery imaging charactersin central lung cancer and applied values with multi-slice spiral CT (MSCT) to provide theoreticalevidence on blood supply and intervention therapy. Methods: Eighteen patients with central lungcancer underwent MSCT with real time helical thin-slice CT scanning. Three-dimensional bronchialartery reconstruction was done at the console work-station. The space anatomical characters ofbronchial artery were observed through different rotations. Results: For 6 cases, thethree-dimensional images of bronchial artery (33.33%) could exactly show the origins, the routes(lung inner segment and mediatism segment) and the diameters of bronchial arteries. Vision rate ofbronchial arteries was the highest in pulmonary artery stricture and truncation groups, and thevessels' diameter became larger apparently. These characters demonstrated blood supply of this kindof central lung cancer come from bronchial artery. Volume rendering images were the best ones amongthree-dimensional images. Conclusion: Three-dimensional imaging with MSCT in bronchial artery canreveal the anatomical characters of bronchial artery and provide theoretical evidence on bloodsupply and intervention therapy of central lung cancer.
文摘Objective: To study the clinical significance of multi-slice spiral CT 3-dimensional (3D) portography in portal vein tumor thrombosis of hepatocellular cacinoma.Methods: 57 cases undergoing 3D portography were collected, of which 6 cases were normal, 5 cases were subjected to cirrhosis and hypertension of portal vein, 42 cases had portal tumor thrombus of hepatic cancer, and the remaining 4 cases showed lymph node enlargment in hilar of liver. All data of the patients came from conventional multi-slice spiral CT double phase of liver. Contrast media was 1.5–2 ml/kg with the injection rate being 2.5–3 ml/s. Axis and 3D portography was analyzed and compared in 42 cases of portal tumor thrombus of hepatic cancer.Results: According to portal tumor thrombus position, 42 cases were fallen into three categories: left (13 cases), right (20 cases), main (9 cases) of potal vein. There was no difference between axis and 3D portography in displaying portal tumor thrombus of hepatic cancer (P>0.05), but 3D portography showing collateral branches was better than axis portography after main portal vein thrombus.Conclusion: Multi-slice spiral CT 3D portography can display the position and types of portal tumor thrombus of hepatic cancer. 3D combined with axis portography can better evaluate the portal tumor thrombus of hepatic cancer and guide to select the therapies. Key words portal vein - tumor thrombus - multi-slice CT - 3 dimension imaging
文摘计算机断层成像(computed tomography,CT)是一种高精度、无创的医学影像诊断设备,其扫描速度快、图像分辨率高、诊断结果精确,被广泛应用于肿瘤、神经系统、心血管、骨骼等疾病的诊断[1]。CT设备作为临床诊断必备的大型医学影像设备之一,近年在医院中的保有量保持着高速增长。为了满足影像科诊断工作的需要,我院于2020年购入1台东软NeuViz 64 In CT机,随着设备的投入使用,如何降低故障发生率、保证开机率成为临床维修人员需要解决的重要问题[2]。本研究主要介绍我院东软NeuViz 64 In CT使用中的3个故障维修案例和日常维护保养措施,现报道如下。
文摘BACKGROUND: During the past years, the number of liver transplantation has increased greatly, but the number of available organs has not increased. In view of the critical shortage of organs, the indications for living-related liver transplantation (LRLT) have broadened since experience with the procedure has been achieved. This study was undertaken to assess the value of multi-slice spiral CT (MSCT) angiography in evaluating the hepatic arterial and veinous anatomy of potential donors for LRLT. METHODS: MSCT was performed after intravenous injection of contrast material at 3 ml/s. The total dose was calculated as 2 ml/kg. Twenty LRLT donors (2 men and 18 women) were subjected to MSCT angiography of hepatic blood vessels. These were generated by volume rendering and maximum intensity projection, while curved planar reformation was added in 5 patients. RESULTS: We identified 10 important hepatic vascular variants in 9 of the 20 donors (4 arterial, 4 venous, and 2 portal venous variants). In hepatic arterial variants, two had a replaced right hepatic artery arising from the superior mesenteric artery, an accessory right hepatic artery from the superior mesenteric artery and a replaced left hepatic artery arising from the left gastric artery. In hepatic venous variants, three had an accessory inferior right hepatic vein and one had two accessory inferior right hepatic veins. In hepatic portal venous variants, two had trifurcation of the main portal vein. CONCLUSIONS: As a non-invasive and reliable method, MSCT angiography is of value in the clinical evaluation of LRLT donors. MSCT angiography should be recommended as a routine preoperative examination for potential LRLT donors.
