Objective: to explore the value of MRI and multi-slice spiral CT in the diagnosis of pancreatic cystic lesions. Methods: a total of 140 patients with pancreatic cystic lesions treated in our hospital were selected as ...Objective: to explore the value of MRI and multi-slice spiral CT in the diagnosis of pancreatic cystic lesions. Methods: a total of 140 patients with pancreatic cystic lesions treated in our hospital were selected as the research objects. They were tested by nuclear magnetic resonance (MRI) and multi-slice spiral CT (MSCT). The differences of the test results between the two groups were compared. Results: according to the comparative analysis of data, 12 cases of pancreatic pseudocyst, 3 cases of pancreatic true cyst, 5 cases of serous cyst, 5 cases of mucinous cyst, 8 cases of solid pseudopapillary tumor and 6 cases of intraductal papillary myxoma were detected by MSCT in the MRI group. 11 cases of pancreatic pseudocyst, 3 cases of pancreatic true cyst, 5 cases of serous cyst, 5 cases of mucinous cyst, 7 cases of solid pseudopapillary tumor were detected by MRI in the MSCT group. There were 6 cases of intraductal papillary myxoma. There was no significant difference between MSCT and MRI (P > 0.05). Conclusion: at present, the diagnosis of pancreatic cystic lesions can be diagnosed by MRI and multi-slice spiral CT, which has popularization and research value.展开更多
BACKGROUND： The various combination of multiphase enhancement multislice spiral CT （MSCT） makes the diagno- sis of a small hepatocellular carcinoma （sHCC） on the back- ground of liver cirrhosis possible. This stu...BACKGROUND： The various combination of multiphase enhancement multislice spiral CT （MSCT） makes the diagno- sis of a small hepatocellular carcinoma （sHCC） on the back- ground of liver cirrhosis possible. This study was to explore whether the combination of MSCT enhancement scan and alpha-fetoprotein （AFP） level ficiency for sHCC. could increase the diagnostic ef- METHODS： This study included 35 sHCC patients and 52 cir- rhotic patients without image evidence of HCC as a control group. The diagnoses were made by three radiologists em- ploying a 5-point rating scale, with postoperative pathologic results as the gold standard. Receiver operating characteristic （ROC） curve analysis was performed to evaluate the diag- nostic value of the three MSCT combination modes （arterial phase＋portal-venous phase, arterial phase＋delayed phase, arterial phase＋portal-venous phase＋delayed phase） and AFP levels for sHCC on the background of liver cirrhosis. RESULTS： The area under ROC curve （AUC）, sensitivity, and specificity of the combination of arterial phase＋portal- venous phase＋delayed phase were 0.93, 93%, and 82%, respectively. The average AUC of the arterial phase＋portal- venous phase＋delayed phase combination was significantly greater than that of the arterial phase＋portal-venous phase （AUC=0.84, P=0.01） and arterial phase＋delayed phase （AUC=0.85, P=0.03）. Arterial phase＋portal-venous phase had a smaller AUC （0.84） than arterial phase＋delayed phase （0.85）, but the difference was insignificant （P=0.15）. After combining MSCT enhancement scan with AFP, the AUC, sensitivity, and specificity were 0.95, 94%, and 83%, respectively, indicating a greatly increased diagnostic efficiency for sHCC. CONCLUSIONS： The combination of AFP and 3 phases MSCT enhancement scan could increase the diagnostic efficiency for sHCC on the background of liver cirrhosis. The application of ROC curve analysis has provided a new method and reference in HCC diagnosis.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
Background Aortic dissection occurs at a low incidence, but is associated with high mortality. It is generally acute onset, complicated and is often misdiagnosed; therefore is a macro vascular disease that poses major...Background Aortic dissection occurs at a low incidence, but is associated with high mortality. It is generally acute onset, complicated and is often misdiagnosed; therefore is a macro vascular disease that poses major threat on patients’ lives. Timely diagnosis and management are essential, so we investigated the diagnostic value of multi-slice spiral CT in aortic dissection. Methods clinical data from 21 patients with confirmed aortic dissection were retrospectively analyzed. All patients had undergone plain and contrasted multi-slice spiral CT scans. Results true lumen and pseudo cavity were clearly revealed in all 21 patients, of which 17 showed intimal flap, four showed intimal calcification and inward displacement, while 2 had thrombosis in the pseudo cavity. As for classification among these 21 patients, 9 had type Ⅰ aortic dissection, including two patients with innominate artery involvement, 1 with celiac trunk involvement and 2 with left renal artery involvement; 2 had type Ⅱ aortic dissection, including 1 patient with innominate artery involvement; Another ten patients had type III aortic dissection, including 2 patients with left subclavian artery involvement and 1 with celiac trunk involvement. Nineteen out of 21 patients had clearly revealed initial rupture. Conclusion multi-slice spiral CT is characterized by rapidness, non-invasiveness and accuracy. It provides clear visualization of the location and scope of aortic dissection, location of the rupture as well as the valves, which makes it a first-choice imaging approach for the diagnosis of aortic dissection.展开更多
目的探究低剂量多层螺旋CT(MSCT)与X线在新生儿呼吸窘迫综合征(NRDS)诊断中的应用价值。方法收集2019年1月至2024年2月我院收治的100例NRDS的病例资料,均接受MSCT及X线检查,观察其MSCT及X线特点,评估其两者对NRDS的诊断效能。结果(1)100...目的探究低剂量多层螺旋CT(MSCT)与X线在新生儿呼吸窘迫综合征(NRDS)诊断中的应用价值。方法收集2019年1月至2024年2月我院收治的100例NRDS的病例资料,均接受MSCT及X线检查,观察其MSCT及X线特点,评估其两者对NRDS的诊断效能。结果(1)100例NRDS患儿的MSCT图像中图像质量优42例(42.00%),图像质量良37例(37.00%),图像质量合格20例(20.00%),1例患儿图像质量不合格,图像质量合格率为99.00%,经镇静后重新检查,合格率为100%。100例NRDS患儿中,35例(35.00%)患儿MSCT示双肺野呈大片状,且形状不对称,边缘模糊,形成浸润影,双肺背部肺组织改变更明显;20例(20.00%)患儿MSCT示双肺纹理增多,且纹理模糊,沿肺纹理可见斑点状影或模糊小斑片状影;30例(30.00%)患儿MSCT示双肺呈低透亮度,可见磨玻璃样;15例(15.00%)患儿MSCT示双肺野密度均升高,且呈白肺,其中10例(10.00%)患儿呈现肺组织受压,纵隔移位至健侧表现。(2)100例NRDS患儿中,58例(58.00%)患儿X线示双肺可见广泛细颗粒网状影,心影、横隔均清晰可见,且伴有支气管充气征;42例(42.00%)患儿X线示双肺野一致性密度升高,见“白肺”及明显支气管充气征,心影、横隔边缘难以分辨;(3)以临床诊断为金标准,MSCT诊断NRDS的准确率为91.00%,敏感度为94.31%,特异性为66.67%;X线诊断N R D S的准确率为80.00%,敏感度为85.22%,特异性为41.67%;MSCT+X线对NRDS的诊断效能最高,诊断准确率为97.00%,敏感度为97.73%,特异性为91.67%。结论低剂量MSCT及X线对NRDS均具备良好的诊断价值,且MSCT相较X线诊断效能更高,但两者联合诊断可进一步提高诊断效能。展开更多
文摘Objective: to explore the value of MRI and multi-slice spiral CT in the diagnosis of pancreatic cystic lesions. Methods: a total of 140 patients with pancreatic cystic lesions treated in our hospital were selected as the research objects. They were tested by nuclear magnetic resonance (MRI) and multi-slice spiral CT (MSCT). The differences of the test results between the two groups were compared. Results: according to the comparative analysis of data, 12 cases of pancreatic pseudocyst, 3 cases of pancreatic true cyst, 5 cases of serous cyst, 5 cases of mucinous cyst, 8 cases of solid pseudopapillary tumor and 6 cases of intraductal papillary myxoma were detected by MSCT in the MRI group. 11 cases of pancreatic pseudocyst, 3 cases of pancreatic true cyst, 5 cases of serous cyst, 5 cases of mucinous cyst, 7 cases of solid pseudopapillary tumor were detected by MRI in the MSCT group. There were 6 cases of intraductal papillary myxoma. There was no significant difference between MSCT and MRI (P > 0.05). Conclusion: at present, the diagnosis of pancreatic cystic lesions can be diagnosed by MRI and multi-slice spiral CT, which has popularization and research value.
基金supported by grants from the National Natural Science Foundation of China(81301275,81471736 and 81671760)the National Science and Technology Pillar Program during the Twelfth Five-Year Plan Period(2015BAI01B09)Heilongjiang Province Foundation for Returness(LC2013C38)
文摘BACKGROUND： The various combination of multiphase enhancement multislice spiral CT （MSCT） makes the diagno- sis of a small hepatocellular carcinoma （sHCC） on the back- ground of liver cirrhosis possible. This study was to explore whether the combination of MSCT enhancement scan and alpha-fetoprotein （AFP） level ficiency for sHCC. could increase the diagnostic ef- METHODS： This study included 35 sHCC patients and 52 cir- rhotic patients without image evidence of HCC as a control group. The diagnoses were made by three radiologists em- ploying a 5-point rating scale, with postoperative pathologic results as the gold standard. Receiver operating characteristic （ROC） curve analysis was performed to evaluate the diag- nostic value of the three MSCT combination modes （arterial phase＋portal-venous phase, arterial phase＋delayed phase, arterial phase＋portal-venous phase＋delayed phase） and AFP levels for sHCC on the background of liver cirrhosis. RESULTS： The area under ROC curve （AUC）, sensitivity, and specificity of the combination of arterial phase＋portal- venous phase＋delayed phase were 0.93, 93%, and 82%, respectively. The average AUC of the arterial phase＋portal- venous phase＋delayed phase combination was significantly greater than that of the arterial phase＋portal-venous phase （AUC=0.84, P=0.01） and arterial phase＋delayed phase （AUC=0.85, P=0.03）. Arterial phase＋portal-venous phase had a smaller AUC （0.84） than arterial phase＋delayed phase （0.85）, but the difference was insignificant （P=0.15）. After combining MSCT enhancement scan with AFP, the AUC, sensitivity, and specificity were 0.95, 94%, and 83%, respectively, indicating a greatly increased diagnostic efficiency for sHCC. CONCLUSIONS： The combination of AFP and 3 phases MSCT enhancement scan could increase the diagnostic efficiency for sHCC on the background of liver cirrhosis. The application of ROC curve analysis has provided a new method and reference in HCC diagnosis.
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.
文摘Background Aortic dissection occurs at a low incidence, but is associated with high mortality. It is generally acute onset, complicated and is often misdiagnosed; therefore is a macro vascular disease that poses major threat on patients’ lives. Timely diagnosis and management are essential, so we investigated the diagnostic value of multi-slice spiral CT in aortic dissection. Methods clinical data from 21 patients with confirmed aortic dissection were retrospectively analyzed. All patients had undergone plain and contrasted multi-slice spiral CT scans. Results true lumen and pseudo cavity were clearly revealed in all 21 patients, of which 17 showed intimal flap, four showed intimal calcification and inward displacement, while 2 had thrombosis in the pseudo cavity. As for classification among these 21 patients, 9 had type Ⅰ aortic dissection, including two patients with innominate artery involvement, 1 with celiac trunk involvement and 2 with left renal artery involvement; 2 had type Ⅱ aortic dissection, including 1 patient with innominate artery involvement; Another ten patients had type III aortic dissection, including 2 patients with left subclavian artery involvement and 1 with celiac trunk involvement. Nineteen out of 21 patients had clearly revealed initial rupture. Conclusion multi-slice spiral CT is characterized by rapidness, non-invasiveness and accuracy. It provides clear visualization of the location and scope of aortic dissection, location of the rupture as well as the valves, which makes it a first-choice imaging approach for the diagnosis of aortic dissection.
文摘目的探究低剂量多层螺旋CT(MSCT)与X线在新生儿呼吸窘迫综合征(NRDS)诊断中的应用价值。方法收集2019年1月至2024年2月我院收治的100例NRDS的病例资料,均接受MSCT及X线检查,观察其MSCT及X线特点,评估其两者对NRDS的诊断效能。结果(1)100例NRDS患儿的MSCT图像中图像质量优42例(42.00%),图像质量良37例(37.00%),图像质量合格20例(20.00%),1例患儿图像质量不合格,图像质量合格率为99.00%,经镇静后重新检查,合格率为100%。100例NRDS患儿中,35例(35.00%)患儿MSCT示双肺野呈大片状,且形状不对称,边缘模糊,形成浸润影,双肺背部肺组织改变更明显;20例(20.00%)患儿MSCT示双肺纹理增多,且纹理模糊,沿肺纹理可见斑点状影或模糊小斑片状影;30例(30.00%)患儿MSCT示双肺呈低透亮度,可见磨玻璃样;15例(15.00%)患儿MSCT示双肺野密度均升高,且呈白肺,其中10例(10.00%)患儿呈现肺组织受压,纵隔移位至健侧表现。(2)100例NRDS患儿中,58例(58.00%)患儿X线示双肺可见广泛细颗粒网状影,心影、横隔均清晰可见,且伴有支气管充气征;42例(42.00%)患儿X线示双肺野一致性密度升高,见“白肺”及明显支气管充气征,心影、横隔边缘难以分辨;(3)以临床诊断为金标准,MSCT诊断NRDS的准确率为91.00%,敏感度为94.31%,特异性为66.67%;X线诊断N R D S的准确率为80.00%,敏感度为85.22%,特异性为41.67%;MSCT+X线对NRDS的诊断效能最高,诊断准确率为97.00%,敏感度为97.73%,特异性为91.67%。结论低剂量MSCT及X线对NRDS均具备良好的诊断价值,且MSCT相较X线诊断效能更高,但两者联合诊断可进一步提高诊断效能。
