胆管腔内超声、内镜逆行胰胆管造影、磁共振胰胆管成像与超声诊断胆总管结石的对比研究

目的 比较超声、磁共振胰胆管成像（MRCP）、内镜逆行胰胆管造影（ERCP）及胆管腔内超声（IDUS）对胆总管结石的诊断效能。资料与方法 回顾性选取2014年5月—2020年12月广西医科大学附属柳州市人民医院临床怀疑胆总管结石患者213例,行腹部超声、MRCP,再行ERCP,同时行IDUS,确诊依靠ERCP。采用受试者工作特征曲线分析4种检查诊断胆总管结石的效能。结果 213例患者中,腹部超声诊断胆总管结石128例,敏感度、特异度分别为68.82%、73.81%;MRCP诊断胆总管结石171例,敏感度、特异度分别为82.45%、61.90%;ERCP诊断胆总管结石177例,敏感度、特异度分别为87.06%、64.29%;IDUS诊断结石170例,敏感度、特异度均为100%,在IDUS操作过程中无并发症出现。超声、MRCP、ERCP诊断胆总管结石的受试者工作特征曲线下面积分别为0.713、0.721、0.746,3种检查方法的诊断效能差异有统计学意义（Z=7.416,P<0.05）。结论 IDUS诊断胆总管结石的效能优于腹部超声、MRCP及ERCP,且IDUS操作安全,未增加ER...     

多层螺旋CT阴性法胰胆管成像与MRCP结合MRI诊断胆总管结石的对比分析

目的：探讨螺旋CT阴性法胰胆管成像（N-MSCTCP）对比MRCP结合MRI对胆总管结石的诊断价值。方法：收集临床疑诊胆道梗阻行腹部螺旋CT（MSCT）及MRCP检查的患者136例,MSCT扫描数据经后处理重建获得N-MSCTCP图像。两位医生采用盲法分别对N-MSCTCP及MRCP结合MRI图像作出梗阻定位及定性诊断。以ERCP及手术结果为标准,分别统计分析2种诊断方法对胆总管结石的诊断能力。结果：N-MSCTCP及MRCP结合MRI诊断方法诊断胆总管结石总的准确度分别为82.4%~84.6%和91.2%~92.6%。MRCP结合MRI检出胆总管微小结石阳性率明显高于N-MSCTCP（二者检出率分别为83.9%~87.1%和35.5%~45.2%）,差别有统计学意义（Fisher精确检验,P〈0.05）。两位阅片者间的诊断一致性很好（K〉0.75）。结论：对于胆总管结石N-MSCTCP与MRCP结合MRI均有较高的诊断准确度,而对于微小结石的检出MRCP结合MRI更有优势。     

彩色多普勒超声对胆总管下段结石的检查技巧及诊断价值

目的 :探讨彩色多普勒超声对胆总管下段结石的检查技巧及诊断价值。方法 :对98例拟诊为胆总管下段结石患者行超声、MRCP和ERCP检查。以ERCP十二指肠乳头切开术取出结石为金标准,比较彩超、MRCP诊断胆总管下段结石的灵敏度、特异度及准确度。结果:胆总管下段结石超声表现为胆总管下段的类圆形、斑点状、条索状强回声,后方伴有声影或较淡的声影,部分后方无声影,胆总管及肝内胆管不同程度扩张;MRCP表现为扩张的胆总管下段圆形或不规则形充盈缺损;彩超诊断胆总管下段结石的灵敏度、特异度及准确度分别为90.0%、75.0%、88.8%,MRCP为94.4%、87.5%、93.9%,2种检查方法比较差异无统计学意义(P0.05)。结论:掌握彩超操作技巧可提高胆总管下段结石的显示率,达到与MRCP相媲美的诊断效果。     

3D MRCP技术在胆总管下段结石诊断中的应用

目的:探讨MRCP在胆总管下段结石诊断中的应用价值。方法:回顾性分析我院经手术或ERCP证实的65例胆总管下段结石患者的MRCP及超声资料,并将MRCP与超声结果进行比较分析。结果:65例中,MRCP清晰显示胆总管62例,对胆总管下段结石的诊断准确率为95%,超声为77%,两者差异有统计学意义(P<0.05)。结论:MRCP对胆总管下段结石的诊断准确率明显高于超声,是胆总管下段结石的首选检查方法。     

MRCP在胆系结石中的应用价值及与CT、B超对比研究

目的:评价MRCP在胆系结石中的应用价值。方法:对107例临床拟诊胆系结石的患者MRCP图像进行分析,同时通过胆系结石的不同部位与CT、B超进行对比研究。结果:MRCP诊断肝内胆管结石准确率为92.7%,胆囊结石准确率为94.7%,胆总管结石准确率为96.3%,总准确率为94.9%。MRCP对肝内胆管结石的诊断准确率与CT、B超无显著性差异(P>0.05),对于胆总管结石的诊断准确率有显著性差异(P<0.05),MRCP明显高于其他两种影像学检查方法。结论:MRCP检查无创伤性、安全、对胆系结石的诊断准确率高,尤其对胆总管结石的诊断具有明显优势,可成为胆系结石的首选检查方法。     

内镜下逆行胰胆管造影加取石术诊治胆总管结石

目的:评价内镜下逆行胰胆管造影(ERCP)同时行乳头括约肌切开术(EST)对胆总管结石的诊断与治疗价值.方法:回顾性分析98例经B超检查诊断为胆总管结石的患者,先行ERCP检查,再行内镜下EST治疗胆总管结石.结果:98例中ERCP准确诊断胆总管结石96例,怀疑胆总管结石1例,未发现异常1例,其确诊率为97.9%,96例EST后采取网篮取石、球囊取石和机械碎石网篮取石成功,1例失败.结论:ERCP对胆总管结石诊断价值较高.EST是一种治疗胆总管结石安全、有效、简便的方法.     

ERCP和MRCP在壶腹区梗阻性病变病因诊断中的对照研究

目的:分析MRCP在壶腹区梗阻性病变中的诊断价值及局限性。方法:搜集经手术和(或)ERCP病理证实的134例壶腹区梗阻性病变的MRCP和ERCP影像资料,并将其分为结石炎症组、恶性肿瘤组和乳头旁憩室组,进行对比分析。结果:134例壶腹区梗阻性病变共发现165个病因,MRCP和ERCP两种检查方法总的诊断准确率分别为79.4%和95.2%。胆总管下端结石和炎症112例,诊断准确率分别为96.4%和98.2%;壶腹区恶性肿瘤共31例,诊断准确率分别为58.1%和80.6%;十二指肠乳头旁憩室和憩室内乳头22例,诊断准确率分别22.7%和100%。结论:MRCP是无创性检查,可作为壶腹区梗阻性疾病的首选检查方法,ERCP可直视壶腹区情况并同时进行内镜下治疗或活检,两者结合互补,可提高壶腹区梗阻性疾病的诊断准确率。     

MRCP结合薄层T2WI-STIR序列对胆总管泥沙样结石的诊断准确性

目的比较上腹部常规磁共振成像(MRI)结合磁共振胰胆管成像(MRCP)与薄层T2WI-STIR序列结合MRCP对胆总管泥沙样结石的诊断准确性。方法 58例经临床手术或内镜逆行胰胆管造影(ERCP)证实的胆总管泥沙样结石患者均经上腹部常规MRI、MRCP及薄层T2WI-STIR序列扫描。随后,对常规MRI+MRCP与薄层T2WI-STIR序列+MRCP探测胆总管泥沙样结石的检出率进行比较。结果与手术或ERCP所见相对照,常规MRI+MRCP在58例胆总管泥沙样结石患者中检出33例,符合率为56.9%;而薄层T2WI-STIR序列+MRCP检出胆总管泥沙样结石44例,符合率为75.9%。两种方法对胆总管泥沙样结石的检出率有显著性差异(P<0.05)。结论与常规MRI+MRCP比较,薄层T2WI-STIR序列+MRCP对胆总管泥沙样结石有更高的诊断准确性。     

MRCP结合薄层扫描对胆管结石的诊断价值(与B超比较)

目的:通过与B超比较评价MRCP结合薄层扫描(简称MR)图像对胆管结石的诊断价值。材料和方法:对87例经手术或ERCP证实为胆管结石的患者,分别按结石部位和大小分组,对术前MR与B超诊断结果进行对比分析。结果:MR诊断胆管结石总准确率为93.1%(81/87),B超诊断总准确率为78.2%(68/87),前者明显高于后者,χ2=7.89,P>0.05;按部位比较,MR与B超对左、右肝管结石诊断准确率无明显差异(P<0.05),对胆总管结石,MR准确率明显高于B超(分别为95.2%和77.4%,χ2=6.82,P<0.05);按结石大小分组,≥2cm组,MR与B超诊断率均为100%,P>0.05;1~2cm(含1cm)组,两种方法诊断率分别为100%和93.1%,P<0.05;<1cm组46例,MR明确诊断40例(87.0%),B超仅明确诊断29例(69.0%),MR检出率明显高于B超(χ2=7.01,P<0.05)。结论:MRCP结合薄层扫描无创、安全,对胆管结石的诊断准确率高,尤其对胆总管结石及<1cm结石的诊断具有明显优势。     

MRCP与ERCP对胆道梗阻性疾病的对比分析

目的:探讨磁共振胰胆管成像(MRCP)及内镜逆行胰胆管造影(ERCP)对胆道梗阻的诊断价值.方法:对30例胆道梗阻患者进行MRCP和ERCP检查,并经手术和病理证实.结果:30例MRCP均获得成功,而ERCP成功率为(29/30)96.7%.MRCP和ERCP总的诊断准确率分别为86.7%和90.0%;其中对恶性病变的诊断准确率分别为87.5%和75.0%;对胆道结石诊断的准确率分别94.4%和100%.结论:MRCP是一种安全有效、非侵袭性、不使用造影剂及无并发症的检查手段,易被患者接受,且其检查成功率高,可作为胆系梗阻性病变的首选检查方法,但不能取代ERCP.     

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.     

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.     

Diagnostic accuracy of MRCP in choledocholithiasis

PURPOSE: To evaluate the accuracy of MRCP in diagnosing choledocholithiasis considering Endoscopic Retrograde Cholangiopancreatography (ERCP) as the gold standard. To compare the results achieved during the first two years of use (1999-2000) of Magnetic Resonance Cholangiopancreatography (MRCP) in patients with suspected choledocholithiasis with those achieved during the following two years (2001-2002) in order to establish the repeatability and objectivity of MRCP results. MATERIALS AND METHODS: One hundred and seventy consecutive patients underwent MRCP followed by ERCP within 72 h. In 22/170 (13%) patients ERCP was unsuccessful for different reasons. MRCP was performed using a 1.5 T magnet with both multi-slice HASTE sequences and thick-slice projection technique. Choledocholithiasis was diagnosed in the presence of signal void images in the dependent portion of the duct surrounded by hyperintense bile and detected at least in two projections. The MRCP results, read independently from the ERCP results, were compared in two different and subsequent periods. RESULTS: ERCP confirmed choledocholithiasis in 87 patients. In these cases the results of MRCP were the following: 78 true positives, 53 true negatives, 7 false positives, and 9 false negatives. The sensitivity, specificity and accuracy were 90%, 88% and 89% respectively. After the exclusion of stones with diameters smaller than 6 mm, the sensitivity, specificity and accuracy were 100%, 99% and 99%, respectively. MRCP accuracy was related to the size of the stones. There was no significant statistical difference between the results obtained in the first two-year period and those obtained in the second period. CONCLUSIONS: MRCP is sufficiently accurate to replace ERCP in patients with suspected choledocholithiasis. The results are related to the size of stones. The use of well-defined radiological signs allows good diagnostic accuracy independent of the learning curve.     

MR cholangiopancreatography: prospective comparison of a breath-hold 2D projection technique with diagnostic ERCP

The aim of this study was to compare prospectively a breath-hold projection magnetic resonance cholangiopancreatography (MRCP) technique with diagnostic endoscopic retrograde cholangiopancreatography (ERCP). Seventy-six patients with suspected strictures or choledocholithiasis were referred for MRCP and subsequent ERCP examination, which were performed within 4 h of each other. The MRCP technique was performed using fat-suppressed rapid acquisition with relaxation enhancement (RARE) projection images obtained in standardised planes with additional targeted projections as required by the supervising radiologist. Two radiologists (in consensus) assessed the MRCP results prospectively and independently for the presence of bile duct calculi, strictures, non-specific biliary dilatation and pancreatic duct dilatation, and recorded a single primary diagnosis. The ERCP was assessed prospectively and independently by a single endoscopist and used as a gold standard for comparison with MRCP. Diagnostic agreement was assessed by the Kappa statistic. The MRCP technique failed in two patients and ERCP in five. In the remaining 69 referrals ERCP demonstrated normal findings in 23 cases, strictures in 19 cases, choledocholithiasis in 9 cases, non-specific biliary dilatation in 14 cases and chronic pancreatitis in 4 cases. The MRCP technique correctly demonstrated 22 of 23 normal cases, 19 strictures with one false positive (sensitivity 100 %, specificity 98 %), all 9 cases of choledocholithiasis with two false positives (sensitivity 100 %, specificity 97 %), 12 of 14 cases of non-specific biliary dilatation and only 1 of 4 cases of chronic pancreatitis. There was overall good agreement for diagnosis based on a kappa value of 0.88. Breath-hold projection MRCP can provide non-invasively comparable diagnostic information to diagnostic ERCP for suspected choledocholithiasis and biliary strictures and may allow more selective use of therapeutic ERCP. Received: 20 May 1998; Revision received: 26 November 1998; Accepted: 7 January 1999     

Imaging patients with "post-cholecystectomy syndrome": an algorithmic approach

AIM: To assess the role of ultrasound (US), magnetic resonance cholangiopancreatography (MRCP) and liver function tests (LFTs) in the evaluation of selected patients presenting with late post-cholecystectomy syndrome (PCS) who were referred for endoscopic retrograde cholangiopancreatography (ERCP). MATERIALS AND METHODS: In a retrospective study a final group of 42 patients with PCS referred for diagnostic ERCP underwent MRCP and abdominal US. ERCP and MRCP images were assessed for bile duct diameters and the presence of strictures and stones. A common bile duct (CBD) diameter of < 10mm was considered normal, whereas > or = 10mm was considered abnormal on US. Findings were correlated to LFTs with contingency table results performed for single techniques and combination of methods. RESULTS: In total 14 stones and one stricture were seen. US had a high negative predictive value (86.4%). MRCP had a sensitivity of 100% and specificity of 88.0%. ERCP is the most accurate test but failed in 11 patients, five of whom had a stone. The accuracy of US and LFTs increases to 93.8% if test results agree in either negative or positive outcome. CONCLUSION: US and LFTs are first-line tests in PCS. If the CBD on US is > or = 10mm, but no cause is identified, MRCP should be performed. If US and LFTs are normal then MRCP is not necessary. The availability of LFTs raises the diagnostic value of imaging.     

Role of magnetic resonance cholangiopancreatography in diagnosing choledochal cysts: Case series and review

AIM:To determine the merits of magnetic resonance cholangiopancreatography(MRCP) as the primary diagnostic test for choledochal cysts(CC’s).METHODS:Between 2009 and 2012,patients who underwent MRCP for perioperative diagnosis were identified.Demographic information,clinical characteristics,and radiographic findings were recorded.MRCP results were compared with intraoperative findings.A PubMed search identified studies published between 1996-2012,employing MRCP as the primary preoperative imaging and comparing results with either endoscopic retrograde cholangiopancreatography(ERCP) or operative findings.Detection rates for CC’s and abnormal pancreaticobiliary junction(APBJ) were calculated.In addition detection rates for clinically related biliary pathology like choledocholithiasis and cholangiocarcinomas in patients diagnosed with CC’s were also evaluated.RESULTS:Eight patients were identified with CC’s.Six patients out of them had typeⅣCC’s,1 had type I and 1 had a new variant of choledochal cyst with confluent dilatation of the common bile duct(CBD) and cystic duct.Seven patients had an APBJ and 3 of those had a long common-channel.Gallstones were found in 2 patients,1 had a CBD stone,and 1 pancreatic-duct stone was also detected.In all cases,MRCP successfully identified the type of CC’s,as well as APBJ with ductal stones.From analyzing the literature,we found that MRCP has 96%-100% detection rate for CC’s.Additionally,we found that the range for sensitivity,specificity,and diagnostic accuracy was 53%-100%,90%-100% and 56%-100% in diagnosing APBJ.MRCP’s detection rate was 100% for choledocholithiasis and 87% for cholangiocarcinomas with concurrent CC’s.CONCLUSION:After initial ultrasound and computed tomography scan,MRCP should be the next diagnostic test in both adult and pediatric patients.ERCP should be reserved for patients where therapeutic intervention is needed.     

Pancreaticobiliary diseases. Comparison of 2D single-shot turbo spin-echo MR cholangiopancreatography with endoscopic retrograde cholangiopancreatography

PURPOSE: To compare the diagnostic value of MR cholangiopancreatography (MRCP) to that of endoscopic retrograde cholangiopancreatography (ERCP) in the diagnosis of various obstructive and nonobstructive pancreaticobiliary diseases. MATERIAL AND METHODS: We retrospectively reviewed 153 patients who had undergone both MRCP and ERCP Breath-hold, heavily T2-weighted images using 2D single-shot turbo spin-echo technique were obtained. MRCP and ERCP results were correlated with the final clinical diagnoses. Accuracy of MRCP and ERCP in the diagnosis of pancreaticobiliary diseases, detecting the cause and site of biliary obstruction, if present, and distinguishing malignant from benign cause of obstruction were compared. RESULTS: Success rates of MRCP and ERCP were 98.7% and 89.5%, respectively. The accuracy of MRCP and ERCP in detecting the site of biliary obstruction was 89.7% and 96.2%, and in detecting the cause of biliary obstruction 69.2% and 71.8%, respectively. The sensitivity, specificity and likelihood ratios for positive and negative tests for MRCP and ERCP in distinguishing malignant biliary obstruction from benign causes were 86.4%, 82.4%, 4.9, 0.2 and 88.6%, 94.1%, 15.1, 0.1, respectively. Concordance between the two tests was 91% (kappa coefficient 0.82, standard error of kappa 0.113, p<0.001). In the group of nonobstructive biliary diseases, accuracy of MRCP and ERCP in detecting cholecystolithiasis were 100% and 73.7%, and in detecting pancreatitis 57% and 14%, respectively. CONCLUSION: 2D single-shot turbo spin-echo MRCP can be performed as a complement to ERCP and can replace ERCP in high-risk patients and in case of unsuccessful cannulation.     

MRCP诊断梗阻性黄疸及其影像学对比研究

目的 探讨MRCP在梗阻性黄疸中的诊断价值。方法 对75例梗阻性黄疸患行MRCP检查，原始图像作三维重建，然后分析其影像表现及诊断结果，并与US、CT和直接胰胆管造影进行比较，对照手术病理结果进行分析结果本组75例中MRCP确诊71例，误诊4例，确诊率95％，与直接胰胆管造影(92％）相近，明显高于US(74％)和CT(75％)。MRCP对梗阻性黄疸定位诊断准确率为100％。结论 MRCP作为无创性检查技术，完整清晰地显示胰胆管系统结构，提高了，梗阻性黄疸的定位和定性诊断率，为临床保守或手术治疗提供可靠依据，可作为梗阻性黄疸患的首选影像学检查方法。     

16层螺旋CT对肾结石并发肾盂癌术前诊断的可行性

目的探讨16层螺旋CT对肾结石并发肾盂癌的术前诊断价值。方法回顾性分析经手术病理证实的14例肾结石并发肾盂癌的B超及多层螺旋CT资料,并将二者的诊断与术后病理诊断对比。结果 B超检查术前有6例漏诊并发肾盂癌,检查漏诊率42.8%(6/14);而多层螺旋CT术前13例诊断明确,仅有1例漏诊,检查准确率达92.8%(13/14)。结论与超声相比,16层多层螺旋CT能显著提高肾结石并发肾盂癌的术前诊断准确率,故可作为肾结石并发肾盂癌术前诊断的首选检查方法。     

Comparative diagnostic evaluation with MR cholangiopancreatography, ultrasonography and CT in patients with pancreatobiliary disease

Purpose

The aim of this study was to directly compare the results of magnetic resonance cholangiopancreatography (MRCP) with those of ultrasonography (US) and multislice computed tomography (MSCT) in the diagnosis of pancreaticobiliary diseases.

Materials and methods

A total of 70 patients (41 men, 29 women) aged 22-89 years were studied either before (n=59) or after cholecystectomy (n=11) for biliary lithiasis. Clinical signs and symptoms were jaundice (n=15), abdominal pain (n=37) and proven biliary lithiasis (n=18). MRCP was performed in all patients, whereas abdominal US was performed in 55 (group 1) and MSCT in 37 (group 2) patients. A regional evaluation of the main structures of the pancreaticobiliary system was performed: gallbladder and cystic duct, intra- and extrahepatic bile ducts and main pancreatic duct. Histology (n=27), biopsy (n=5), endoscopic retrograde cholangiopancreatography (ERCP) (n=28) and/or clinical-imaging follow-up (n=10) were considered standards of reference. In particular, patients were classified as showing benign (n=47) or malignant (n=12) lesions or normal biliary anatomy (n=11).

Results

In group 1, the results of MRCP and US were concordant in the majority (92%) of cases; however, statistically significant discordance (p<0.01) was found in the evaluation of the extrahepatic ducts, with nine cases (16%) of middle-distal common bile duct stones being detected on MRCP only. In group 2, the results of MRCP and MSCT were also concordant in most cases (87%). However, findings were significantly discordant when the intra- and extrahepatic ducts were analysed, with seven (19%) and six (16%) cases, respectively, of lithiasis being detected on MRCP only (p<0.01 for both).

Conclusions

The results of our study confirm the diagnostic potential of MRCP in the study of the pancreaticobiliary duct system. In particular, the comparison between MRCP and US and MSCT indicates the superiority of MRCP in evaluating bile ducts and detecting stones in the common bile duct.