MRCP联合MRI在胰胆管梗阻性疾病中诊断的价值

目的:探讨MRCP联合MRI对胰胆管梗阻性疾患定位和定性诊断的价值.方法:对2000年9月～2007年9月842例梗阻性黄疸患者的MRCP及MRI的图像进行分析,并与CT、US、直接胆道造影和临床手术病理结果对照.结果:全部病例MRCP 检查均一次成功,其中320例行直接胆道造影,与MRCP 对照,二者所获图像极其相似.MRCP 对梗阻定位诊断准确率为96.79%,MRCP联合MRI可提高到100%;MRI对梗阻定性诊断准确率为89.19%,联合MRCP可提高至97.74%.CT对梗阻的定位、定性诊断率分别为78.61%,77.59%;US对梗阻的定位、定性诊断率分别为89.73%,82.47%.结论:MRCP联合MRI作为无创性检查技术,对胆胰管梗阻性疾病的定位与定性诊断准确率均高于CT及US;可作为胆系梗阻性病变诊断的首选检查.     

胰胆管水成像对梗阻性黄疸的诊断价值

目的 探讨胰胆管水成像(MRCP)对梗阻性黄疸的诊断价值。方法 回顾分析47例经手术、病理证实的梗阻性黄疸患者的影像表现。并与B超、CT、PTC相比较。结果 MRCP能清晰显示胰胆管的梗阻部位,对梗阻性黄疸的定位诊断率100％,定性诊断率93.6%。结论 MRCP是阻性黄疸的首选和最佳检查方法。     

磁共振胰胆管成像对恶性胆道梗阻的诊断价值

目的：评价磁共振胰胆管成像（MRCP）对恶性胆道梗阻性疾病的临床诊断价值，探讨肝外恶性胆道梗阻的MRCP、MRI诊断及鉴别诊断。方法：回顾性分析69例恶性胆道梗阻患者的MRI及MRCP表现，并与CT、US、直接胆道造影和手术病理结果对照。MRCP采用二维（2D）和／或三维（3D）屏气半傅立叶转换快速自旋回波（FASE）序列T2加权成像技术。结果：69例MRCP检查均一次成功，全部病例胰胆管显示满意，与直接胆道造影对照，二者所获图像极其相似。MRCP对恶性胆道梗阻定位诊断准确率为98．5％定性诊断准确率为95．6％。结论：MRCP对恶性胆道梗阻定位及定性诊断优于CT和US，是诊断恶性胆道梗阻的一种有效的非侵袭性的检查方法。     

磁共振T2加权像结合磁共振胰胆管成像对梗阻性黄疸的诊断价值

目的探讨磁共振T2加权像结合磁共振胰胆管成像（TzwI＋MRCP）对梗阻性黄疸的诊断价值。方法经手术病理证实的梗阻性黄疸82例，包括胆总管结石36例，Mirizzi综合征5例，胆囊癌4例，胆管癌14例，胰头癌20例，壶腹癌3例，治疗前均经B超、磁共振T2加权平扫和MRCP检查，其中，73例还经CT检查。将T2WI结合MRCP和单独的MRCP、CT、B超的定位和定性诊断的准确率进行比较。结果T2WI结合MRCP对于梗阻性黄疸的定性诊断准确率优于单独MRCP片（P〈0．05），定位诊断无差异，同时也优于CT，B超检查。结论对梗阻性黄疸的定位、定性诊断，T2WI结合MRCP可作为首选的检查方法。     

十二指肠溃疡致梗阻性黄疸的MR诊断

目的 探讨MRI在十二指肠慢性溃疡所致梗阻性黄疸中的诊断价值.资料与方法 回顾性分析经内镜检查(4例)及手术证实(2例)的6例十二指肠溃疡致梗阻性黄疸患者的MRI与磁共振胰胆管成像(MRCP)表现.结果 MRI与MRCP清晰显示6例十二指肠溃疡所致梗阻性黄疸的病变部位与病变范围,与手术及内镜所见相同,定位均较准确.结论 MRI及MRCP可清晰显示十二指肠病变形态、范围及与扩张的胰胆管之间的关系,对于十二指肠溃疡所致梗阻性黄疸的诊断有较高的应用价值.     

高场MRCP在梗阻性黄疸中的诊断价值

目的探讨MRCP对梗阻性黄疸定位和定性诊断的价值。方法对2010年4月～2011年7月来我院就诊的78例梗阻性黄疸患者进行MRCP及CT检查,并与临床手术病理结果对照,分别统计出MRCP、CT的定位及定性诊断准确率。结果 MRCP对梗阻定位诊断准确率、梗阻定性诊断准确率分别为89.74%、85.90%;CT对梗阻的定位、定性诊断率分别为67.95%、67.95%。结论 MRCP作为无创性检查技术,对梗阻性黄疸的定位与定性诊断准确率均高于CT,可作为胆系梗阻性病变诊断的首选检查。     

MRCP在梗阻性黄疸诊断中的应用价值

目的：探讨磁共振胰胆管造影（MRCP）对梗阻性黄疸的诊断价值。方法：60例梗阻性黄疸患者采用重T2加权MR水成像技术，采集资源影像后做最大信号强度投影（MIP）处理。结果：60例患者经过MRCP检查均满意的显示梗阻部位及胆管扩张程度，定位诊断准确率100％，定性诊断准确率为86．7％。结论：MRCP可以直观准确地显示胆管梗阻的部位和程度，结合MR常规SE序列和胰胆管成像的原始图像所见，定性诊断准确率较高，对梗阻性黄疸的诊断是一种有效、安全、可靠的方法     

磁共振胰胆管造影与64层螺旋CT诊断恶性梗阻性黄疸的比较

目的对比观察磁共振胰胆管造影(MRCP)、64层螺旋CT对恶性梗阻性黄疸的诊断效果。方法对2018年1月至2019年1月在我院治疗的88例恶性梗阻性黄疸患者进行研究,分别给予MRCP检查和64层螺旋CT检查,以病理结果为金标准,比较2组的诊断效果。结果以病理结果为金标准,2种诊断方法在梗阻水平定位的诊断上,MRCP符合率均为100%,CT为99%,比较差异无统计学意义(P>0.05);在肿瘤性病变诊断中,MRCP诊断符合率为94%,CT为91%,比较差异无统计学意义(P>0.05);梗阻原因诊断MRCP符合率为91%优于CT的78%,2组比较差异有统计学意义(P<0.05)。结论 MRCP、CT应用于恶性梗阻性黄疸的诊断中,MRCP在梗阻原因诊断比CT精确,但64层螺旋CT操作更简便,且无创无痛、费用低,因此,在临床诊断中,应根据患者的实际需求选择合适的诊断方法。     

MRCP对梗阻性黄疸诊断价值的探讨

目的探讨磁共振胰胆管成像(MRCP)对梗阻性黄疸疾病的诊断价值。方法回顾性分析经手术或ERCP病理证实的梗阻性黄疸患者资料119例。该119例梗阻性黄疸患者用西门子1.5T超导型磁共振成像仪行常规MRI及MRCP检查。常规MRI包括轴位T1WI、T2WI及T2trufi冠状位扫描;MRCP检查包括3DMRCP和二维厚块MRCP检查。结果良性病变98例,其中胆系结石80例,胆管炎性狭窄12例,胆总管蛔虫4例,胆总管囊肿2例。恶性病变21例,其中胆管癌11例,壶腹癌3例,胰头癌7例。MRCP能清晰地显示正常胰胆管树结构,能直观地显示胰胆管扩张和梗阻的部位、形态、范围,对梗阻性胆道疾病的定位诊断准确率为100%,定性诊断准确率为94%。结论MRCP对梗阻性黄疸定位、定性诊断准确,特别是对结石的诊断,能清楚地显示梗阻部位、原因、病变形态、病变与周围结构的关系及周围病变性质,为临床手术方案提供可靠依据。     

64排螺旋CT对壶腹区良恶性病变影像特征评价

目的评价多层螺旋CT（MSCT）平扫和三期动态增强扫描对壶腹周围病变所致梗阻性黄疸的诊断价值。方法回顾性分析经手术、病理证实的96例梗阻性黄疸患者的MSCT,US,ERCP资料,着重分析MSCT的平扫和三期动态增强扫描在梗阻定位、定性方面的作用及其在良恶性病变鉴别诊断中的作用。结果本组96例梗阻性黄疸患者中,34例胰头区病变MSCT确诊31例,确诊率89．2％,明显高于US（76．4％）,54例胆总管末端病变MSCT确诊48例,确诊率87．5％,明显高于US（63．4％）,8例十二指肠乳头病变MSCT确诊5例,确诊率62．5％。本组患者MSCT对梗阻的定位诊断均与手术、内镜所见相符,准确率为100％。结论MSCT作为无创性检查技术,可明确判定梗阻部位,平扫和动态增强扫描结合可显著提高良恶性病变鉴别诊断正确率。     

The diagnostic accuracy of magnetic resonance cholangiopancreatography and ultrasound compared with direct cholangiography in the detection of choledocholithiasis.

AIM: To determine the diagnostic accuracy of magnetic resonance cholangiopancreatography (MRCP) and ultrasound (US) in the diagnosis of choledocholithiasis in a large group of patients with bile duct stones confirmed at direct cholangiography. Also, to compare bile duct stones confirmed at direct cholangiography. Also, to compare bile duct stone characteristics using the three different investigations, endoscopic retrograde cholangiopancreatography (ERCP), MRCP and US. MATERIALS AND METHODS: 191 patients (M:F, 76:115; mean age, 66 years; range, 24-92 years) were investigated by direct cholangiography, MRCP and US. Their final diagnosis as determined at direct cholangiography were choledocholithiasis (n = 34), strictures (n = 47) and normal ducts (n = 110). The direct cholangiographic methods used for diagnosis of choledocholithiasis were ERCP (n = 29), intraoperative cholangiography (n = 3) and percutaneous transhepatic cholangiography (n = 2). The bile duct stone characteristics were compared using ERCP, MRCP and US in the 29 patients in whom stones were exclusively diagnosed by ERCP. RESULTS: Compared with the final diagnosis, MRCP had a sensitivity, specificity and diagnostic accuracy of 91%, 98% and 97%, respectively, in the diagnosis of choledocholithiasis. MRCP resulted in three false-negative and three false-positive findings, four of which occurred due to confusion with lesions at the ampulla. US had a sensitivity, specificity and diagnostic accuracy of 38%, 100% and 89%, respectively, in the diagnosis of choledocholithiasis. ERCP diagnosed more stones and the stones were more proximally distributed within the bile duct at ERCP when compared with MRCP. CONCLUSION: MRCP has a high diagnostic accuracy (97%), similar to that at direct cholangiography, in the diagnosis of choloedocholithiasis. It has the potential to replace diagnostic ERCP and select patients with choledocholithiasis for therapeutic ERCP.     

低场MRCP在梗阻性黄疸中的应用及B超、CT的对照分析

目的　探讨低场MRCP在梗阻性黄疸中的诊断价值。方法　收集经临床证实的梗阻性黄疸患者 55例,同时与所做CT和B超结果对照分析。结果　55例梗阻性黄疸,其中胆管结石 30例、肿瘤 21例,其他 4例;MRCP显示胆道梗阻的部位准确性达 100%,确定梗阻病因的准确性为 81. 8%。结论　低场MRCP可对胆管梗阻性疾病准确定位, 3D-FSEMRCP联合MR常规T1WI、T2WI断层扫描,对梗阻性黄疸病变的诊断具有很高的敏感性、准确性。     

恶性胆道梗阻的MRCP诊断(附21例分析)

目的　评价MRCP对恶性胆道梗阻的诊断价值。方法　 2 1例经临床及CT发现恶性胆道梗阻者行MRCP检查 ,结合MR平扫及手术病理对照。结果　MRCP对恶性胆道梗阻有较高的诊断率 ,6 8%～ 10 0 %。扩张的肝内胆管呈枯枝样或腊肠样 ,低位梗阻的胆总管末端大多呈截断状、杯口状或鼠尾状。结论　MRCP诊断恶性胆道梗阻准确率高 ,可作为不宜行ERCP的替代检查方法。     

Diagnostic accuracy of magnetic resonance cholangiopancreatography and ultrasound compared with direct cholangiography in the detection of choledocholithiasis

AIM: To determine the diagnostic accuracy of magnetic resonance cholangiopancreatography (MRCP) and trans-abdominal ultrasound in the detection of choledocholithiasis, and to compare bile duct stone characteristics using endoscopic retrograde cholangiopancreatography (ERCP), MRCP and ultrasound. MATERIALS AND METHODS: Of 191 consecutive patients referred for diagnostic ERCP, choledocholithiasis was diagnosed in 34 patients using direct cholangiography. The latter took the form of ERCP (n = 29), intraoperative cholangiography (n = 3) or percutaneous transhepatic cholangiography (n = 2). All patients underwent MRCP and ultrasound examinations and their findings for choledocholitiasis were compared with those at direct cholangiography. Finally, in the 29 patients with choledocholithiasis diagnosed under ERCP, stone characteristics were compared across the three investigations of ERCP, MRCP and ultrasound. RESULTS: Compared with direct cholangiography, MRCP showed a sensitivity, specificity and diagnostic accuracy of 91%, 98% and 97%, respectively, in the diagnosis of choledocholithiasis. MRCP resulted in three false-negative and three false-positive findings, four of which occurred due to confusion with lesions at the ampulla. Ultrasound showed a sensitivity, specificity and diagnostic accuracy of 38%, 100% and 89%, respectively, in the diagnosis of choledocholithiasis. ERCP revealed a greater number of stones and these were more proximally distributed within the bile ducts when compared to MRCP. CONCLUSIONS: MRCP is highly accurate in the diagnosis of choloedocholithiasis and has the potential to replace diagnostic ERCP. MRCP underestimates the number of bile duct stones present.     

CT and MR cholangiography: advantages and pitfalls in perioperative evaluation of biliary tree

Recent developments in imaging technology have enabled CT and MR cholangiopancreatography (MRCP) to provide minimally invasive alternatives to endoscopic retrograde cholangiopancreatography for the pre- and post-operative assessment of biliary disease. This article describes anatomical variants of the biliary tree with surgical significance, followed by comparison of CT and MR cholangiographies. Drip infusion cholangiography with CT (DIC-CT) enables high-resolution three-dimensional anatomical representation of very small bile ducts (e.g. aberrant branches, the caudate branch and the cystic duct), which are potential causes of surgical complications. The disadvantages of DIC-CT include the possibility of adverse reactions to biliary contrast media and insufficient depiction of bile ducts caused by liver dysfunction or obstructive jaundice. Conventional MRCP is a standard, non-invasive method for evaluating the biliary tree. MRCP provides useful information, especially regarding the extrahepatic bile ducts and dilated intrahepatic bile ducts. Gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced MRCP may facilitate the evaluation of biliary structure and excretory function. Understanding the characteristics of each type of cholangiography is important to ensure sufficient perioperative evaluation of the biliary system.     

磁共振胰胆管成像在诊断胰胆管疾病中的价值

目的：评价磁共振胰胆管成像(MRCP)诊断阻塞性和扩张性胰胆管疾病的临床价值。方法：采用西门子symPhonyl．5T超导磁共振成像仪，对72例胰胆管系统疾病患和20例正常对照组进行MRI和MRCP成像，其中病变组22例进行Gd-DTPA动态增强。分析图像，将诊断结果与手术病理和超声、CT等其它影像检查结果对照。结果：MRCP能清晰显示正常胰胆管树的结构，能直观显示胰胆管扩张和梗阻的部位、形态、范围。检出率和定位率为94、3％，定性率为85．7％。MRI图像能帮助定性诊断。结论：MRCP是一种安全、有效的胰胆管系统影像检查方法，与MRI结合，对诊断和鉴别诊断胰胆管阻塞性和扩张性疾病有较高的临床诊断价值，     

梗阻性黄疸的低场强磁共振胰胆管成像

目的:评价磁共振胰胆管成像对梗阻性黄疸的诊断价值。方法:回顾性分析50例经手术病理及临床证实的胆道梗阻性疾病患者的MRCP及MRI表现。结果:MRCP对胆道梗阻定位诊断符合率为100%,定性诊断符合率为86%。结论:MRCP结合MRI是诊断胆胰管疾病非常有效和准确的方法。     

The role of ultrasound and magnetic resonance cholangiopancreatography for the diagnosis of biliary stricture after liver transplantation

Purpose

To identify the diagnostic value of ultrasound (US) and magnetic resonance cholangiopancreatography (MRCP) in diagnosing biliary strictures after liver transplantation.

Materials and methods

Sixty patients with clinically suspected biliary strictures after liver transplantation were retrospectively evaluated. All patients underwent US and MRCP before the standard of reference (SOR) procedure: endoscopic retrograde cholangiopancreatography or percutaneous transhepatic cholangiography. Radiological images were analyzed for biliary dilatation and strictures.

Results

By SOR, biliary dilatation was present in 55 patients, stricture in 53 (44 anastomotic, 4 intrahepatic, 5 both), and dilatation and/or stricture in 58. Dilatation was diagnosed by US and MRCP in 39 and 45, respectively (sensitivity 71% vs. 82%, p = 0.18). Stricture was diagnosed by US and MRCP in 0 and 42, respectively (sensitivity 0% vs. 79%, p < 0.0001). False positive stricture was diagnosed by MRCP in 2. Dilatation and/or stricture was diagnosed by US in 39 and MRCP in 50 (sensitivity 67% vs. 86%, p = 0.01); however, using both techniques, sensitivity increased to 95%.

Conclusions

MRCP is superior to US for diagnosing biliary strictures after liver transplantation primarily because MRCP can detect stricture. The combination of US and MRCP seems superior to either method alone. Our data suggest that in patients with normal US and MRCP, direct cholangiography could be avoided.