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find Keyword "磁共振胰胆管成像" 5 results
  • 磁共振胰胆管成像对胆源性胰腺炎胆道病变的诊断价值

    目的评价磁共振胰胆管成像(MRCP)对胆源性胰腺炎胆道病变的诊断价值。方法25例胆源性胰腺炎患者,临床检查发现总胆红素、ALT升高及部分患者B超检查提示胆总管扩张,疑有胆总管病变,施行MRCP检查。结果19例发现有胆道病变,诊断率达76%(19/25),明显高于B超的36%(9/25)。结论在胆源性胰腺炎后行胆囊切除术前行MRCP检查,可避免胆总管结石的遗漏或不必要的胆总管探查。

    Release date:2016-08-28 04:43 Export PDF Favorites Scan
  • Assessment of Bile Duct Complications after Cholecystectomy with Magnetic Resonance Imaging

    ObjectiveTo investigate the value of magnetic resonance (MR) imaging in the assessment of bile duct complications after cholecystectomy. MethodsFifty patients of having bile duct complications after cholecystectomy underwent MR imaging and had some positive manifestations. The indication for cholecystectomy was symptometic cholelithiasis in all cases. MR imaging was performed with a 1.5T clinical imager including all of the sequences of: ①T1 weighted imaging (T1WI) was performed in transverse and coronal plane before and after gadolinium-enhanced. ②T2 weighted imaging (T2WI) was performed in transverse plane. ③A true fast imaging with steadystate precession sequence (True fisp) was performed in coronal plane. ④MR cholangiopancreatography was also obtained. ResultsThe bile duct complications after cholecystectomy including: 22 cases of cholelithiasis, 15 cases of chronic cholangitis with or without bile duct abscess. Bile duct strictures or abruption at the confluence of hepatic and common bile duct in 6 and 3 cases respectively. Tumors of bile duct or pancreas in 9 cases. The other complications after cholecystectomy including bile leak with choleperitonitis and/or biloma and acute pancreatitis.ConclusionMR imaging was a valuable method for the assessment of bile duct complications after cholecystectomy. MR imaging could assess the etiology of bile duct complications. If there were bile duct obstruction, MR imaging could assess the location and the severe of obstruction. For bile duct or pancreatic tumors, MR imaging could assess the areas of tumor infiltration and resection and was helpful to select treatment methods. Before lapatoscopic cholecystectomy, the overall and careful imaging assessment for bile duct and gallbladder and its adjacent hepatic tissue and pancreas so to avoid missing the relative tumors.

    Release date:2016-08-28 04:43 Export PDF Favorites Scan
  • Comparison between Sampling Perfection with Application Optimized Contrast Technique MR Cholangiopancreatography and Half-Fourier Acquisition Single-shot Turbo Spin-echo Technique MR Cholangiopancreatography in the Display of Cystic Duct

    目的 比较磁共振胰胆管成像(MRCP)三维质子加权快速自旋回波(SPACE)序列和半傅立叶采集单次激发快速自旋回波(HASTE)序列对胆囊管的显示情况,优选最佳的磁共振检查序列。 方法 2012年5月-2013年3月265例连续性患者同时采用SPACE序列和HASTE序列行MRCP检查,比较两种序列对胆囊管显示的图像质量和显示率,并进行统计学分析。 结果 SPACE序列对胆囊管显示的图像质量评分及显示率均优于HASTE序列 (P<0.05)。 结论 SPACE序列是目前显示胆囊管较为理想的MRCP成像方法。

    Release date:2016-09-07 02:34 Export PDF Favorites Scan
  • MRI Assessment and Functional Evaluation of Chronic Pancreatitis

    Objective To investigate the magnetic resonance imaging (MRI) assessment and functional evaluation of chronic pancreatitis (CP). Methods Literatures about MRI assessment of CP (especially the evaluation of pancreatic exocrine function with MRI) were reviewed. Results Some early parenchymal changes (pancreatic size,signal intensity of pancreas, and enhancement pattern) in the CP could be visualized by MRI;ductal changes could be visualized by MR cholangiopancreatography (MRCP);and secretin-stimulated MRCP (combination of both morphologic and functional evaluation) not only improved the visualization of pancreatic duct and side branches,but also allowed evaluation of the pancreatic exocrine function noninvasively. Secretin-stimulated diffusion weighted imaging also could be used as a noninvasive method to assess pancreatic exocrine function. Conclusions Conventional MRI and (or) secretin-stimulated MRI can become valuable means in CP (especially early-stage CP), with furnishing morphologic and functional information simultaneously. However,further research is needed to verify the diagnostic accuracy of these modalities.

    Release date:2016-09-08 10:24 Export PDF Favorites Scan
  • Value of Magnetic Resonance Cholangiopancreatography on Prevention of Complications in Laparoscopic Cholecystectomy

    ObjectiveTo evaluate the value of magnetic resonance cholangiopancreatography (MRCP) on prevention of the complications in laparoscopic cholecystectomy (LC). MethodsThe clinical data of 1 079 patients underwent LC from January 2006 to June 2010 in this hospital were retrospectively analyzed. According to the use of MRCP or not in the different period, the patients were divided into nonMRCP group (n=523) and MRCP group (n=556). The occurrence of bile duct injuries (BDI) and retained common duct stone (RCDS) were compared between two groups. ResultsConversion to open surgery was performed in 35 cases in nonMRCP group and in 41 cases in MRCP group. The intraoperative and postoperative BDI were found in five patients and RCDS were found in 27 patients in nonMRCP group, and those were not found in patients in MRCP group. The differences of BDI and RCDS of patients were significant between two groups (P=0.026 and P=0.000). In nonMRCP group, 23 of 55 patients were found common bile duct stones by intraoperative cholangiography. Common bile duct stones were found by intraoperative cholangiography other than preoperative MRCP in three patients in MRCP group, while another three patients did not find common bile duct stones by intraoperative cholangiography although preoperative MRCP suggested. By MRCP, double gallbladders were found in one patient, Mirizzi syndrome in eight patients, variant cystic duct in 34 patients, accessory hepatic duct in 28 patients, and complicating common bile duct stones in 27 patients in MRCP group, the diagnostic accuracy of those were 100%, 87.5%, 94.1%, 89.3% and 88.9%, respectively. ConclusionPreoperative MRCP is helpful to prevent BDI and RCDS for the patients with LC.

    Release date:2016-09-08 10:42 Export PDF Favorites Scan
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