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Detection of hypervascular hepatocellular carcinoma: Comparison of multi-detector ct with digital subtraction angiography and Lipiodol ct

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World Journal of Gastroenterology 2005年第2期11卷 200-203页

作者： Xiao-HuaZheng Yong-SongGuan Xiang-PingZhou JuanHuang LongSun XiaoLi YuanLiu DepartmentofRadiology HuaxiHospitalSichuanUniversityChengdu610041SichuanProvinceChina

AIM: The purpose of this study was to compare the diagnostic accuracy of biphasic multi-detector row helical computed tomography (MDct), digital subtraction angiography (DSA)and Lipiodol computed tomography (ct) in detection of hypervascular hepatocellular carcinoma (HCC).METHODS: Twenty-eight patients with nodular HCC underwent biphasic MDct examination: hepatic arterial phase (HAP) 25 s and portal venous phase (PVP) 70 s after injection of the contrast medium (1.5 mL/kg). They also underwent hepatic angiography and intra-arterial infusion of iodized oil. Lipiodol ct was performed 3-4 wk after infusion. MDct images were compared with DSA and Lipiodol ct images for detection of hepatic ***: The three imaging techniques had the same sensitivity in detecting nodules ＞20 mm in diameter. There was no significant difference in the sensitivity among HAP-MDct, Lipiodol ct and DSA for nodules of 10-20 mm in diameter. For the nodules ＜10 mm in diameter, HAP-MDct identified 47, Lipiodol ct detected 27 (X2= 11.3, P= 0.005＜0.01, HAP-MDct vs Lipiodol ct) and DSA detected 16(X2= 9.09, P= 0.005＜0.01 vs Lipiodol ct and X2= 29.03,P = 0.005＜0.01 vs HAP-MDct). However, six nodules ＜10 mm in diameter were detected only by Lipiodol ***: MDct and Lipiodol ct are two complementary modalities. At present, MDct does not obviate the need for DSA and subsequent Lipiodol ct as a preoperative examination for HCC.

关键词： Hypervascular hepatocellular carcinoma multi-detector ct Digital subtraction angiography Lipiodol ct

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Correlation between Acute Coronary Syndrome Classification and multi-detector ct Characterization of Plaque

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Chinese Medical Sciences Journal 2011年第2期26卷 85-90页

作者： Zhi-guo Wang Lu-yue Gai Jing-jing Gai Ping Li Xia Yang Qin-hua Jin Yun-dai Chen Zhi-jun Sun Zhi-wei Guan Department of Cardiology The Genera Hospital of the People＇s Liberation Army Beijing 100853 China Department of Nuclear Medicine The Genera Hospital of the People＇s Liberation Army Beijing 100853 China

Objective To determine if multi-detector ct （MDct） characterization of plaque is correlated with the classification of acute coronary syndrome （ACS）. Methods Altogether 1900 patients were examined by MDct from December 2007 to May 2009, of whom 95 patients fulfilled the criteria of ACS. Those patients were divided into the discrete plaque group （n=61） and diffuse plaque group （n=34） based on the findings in MDct. The clinical diagnosis of ACS and ct results were analyzed, including segment stenosis score, segment involvement score, 3-vessel plaque score, left main score, calcification score, and remodeling index. The incidences of major adverse cardiac events in follow-up period were also recorded. Results The patients of the diffuse plaque group were older than those of the discrete plaque group （P〈0.0001）. The diffuse plaque group presented more cases of hypertension, peripheral artery disease, diabetes, and heart failure than discrete plaque group （all P〈0.05）. All the 5 patients with ST-segment elevation myocardial infarction were found in discrete plaque group. The segment stenosis score of the discrete plaque group was lower than that of the diffuse plaque group （5.15±3.55 vs. 14.91±5.37, P〈0.001）. The other four scores demonstrated signiflcant inter-group difference as well （all P〈0.05）. The remodeling index of the discrete plaque group was higher （1. 12±0.16 vs. 0.97±0.20, P〈0.05）. Follow-up data showed that major adverse cardiac events occurred more frequently in diffuse plaque group than in discrete group （29.41% vs. 11.48%, P=0.0288）. Conclusions Characteristics of discrete and diffuse plaques may be significantly different among different classes of ACS. The diffuse plaque may present higher risk, correlated to higher mortality. The diagnosis of discrete and diffuse plaques by MDct would provide a new insight into the prognosis and treatment of ACS.

关键词： acute coronary syndrome coronary plaque multi-detector ct

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multiplanar reformations and minimum intensity projections using multi-detector row ct for assessing anomalies and disorders of the pancreaticobiliary tree

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World Journal of Gastroenterology 2007年第31期13卷 4177-4184页

作者： Hyun Cheol Kim Dal Mo Yang Wook Jin Chang Woo Ryu Jung Kyu Ryu Sung Il Park Seong Jin Park Hyeong Cheol Shin Il Young Kim Department of Radiology East-West Neo Medical Center Kyung-Hee University Seoul Republic of Korea Department of Diagnostic Radiology Kwandong University Myongji Hospital Goyang Republic of Korea Department of Diagnostic Radiology Soonchunhyang University Bucheon Hospital Bucheon Republic of Korea Department of Diagnostic Radiology Soonchunhyang University Cheonan Hospital Cheonan Republic of Korea

ct scan is regarded as the imaging modality of choice in patients with pancreaticobiliary ductal abnormalities. However, the axial orientation of the ct images provides only limited anatomical view of pancreaticobiliary ductal abnormalities. The technological advances of multi-de-tector row ct and three-dimensional image processing in workstations allows rapid image acquisition and a short postprocessing time. In particular, multiplanar reforma-tions (MPR) and minimum intensity projections (MinIP) offer rapid and accurate images of the anatomy and ab-normalities of the pancreaticobiliary tree. Moreover, MPR and MinIP help determine the relationship between the pancreaticobiliary ductal anatomy and the surrounding structures. This pictorial review illustrates the wide spec-trum of images obtained by the MPR and MinIP of the anomalies and disorders of the pancreaticobiliary tree.

关键词： multi-detector ct Bile Ducts Biliary System Pancreas Computer Applications-3D

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Magnetic Resonance Imaging of Atherosclerotic Lesion with New Devised Animal Surface Coil

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Journal of Shanghai Jiaotong university(Science) 2008年第6期13卷 748-752页

作者：赵炳辉李明华赵清程英升肖云峰赵家民 Radiology Department Shanghai 6th People's HospitalShanghai Jiaotong UniversityShanghai 200233China Cardiology Department Shanghai 6th People's Hospital Shanghai Jiaotong UniversityShanghai 200233China Shanghai Chenguang Medical Technology Company Shanghai 200233China

The ability of dynamic contrast enhanced magnetic resonance imaging(DCE MRI) with a new devised animal surface coil was analyzed in identifying atherosclerotic plaques in the rabbit medium-sized iliac artery(IA).Then a comparative analysis of multi-detector computed tomography(MDct) and DCE MRI was done in discerning morphology and components of 80 atherosclerotic plaques identified by *** shows that the DCE MRI may be an emerging noninvasive and economic way to characterize atherosclerotic plaques at ***'s more, a new devised animal surface coil would further improve the signal-to-noise ratio(SNR) and the quality of ***, ct angiography(ctA) may be better than MR angiography(MRA) in detecting vessel stenosis.

关键词： surface coil magnetic resonance imaging multi-detector ct atherosclerotic plaque

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