• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제18권2호
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• pp.73-84
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• 2015

Pediatric pancreatitis is not uncommon and results in considerable morbidity and mortality in the affected children. Unlike adults, pediatric pancreatitis is more frequently associated with underlying structural abnormalities, trauma, and drugs rather than an idiopathic etiology. Magnetic resonance cholangiopancreatography (MRCP) is a good imaging modality for evaluating pancreatitis and determining etiology without exposure to radiation. This article focuses on MRCP findings associated with various causes of pancreatitis in children, particularly structural abnormalities of the pancreaticobiliary system, as well as describing the feasibility, limitations, and solutions associated with pediatric MRCP.

• Journal of Magnetics
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• 제19권4호
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• pp.365-371
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• 2014

The aim of this study was to evaluate the utility of 3-D images by comparing and analyzing reconstructed 3-D images from fast spin echo images of MRI cholangiopancreatography (MRCP) images using maximum intensity projection (MIP) with the subtraction images derived from dynamic tests of magnetic resonance mammography. The study targeted 20 patients histologically diagnosed with pancreaticobiliary duct disease and 20 patients showing pancreaticobiliary duct diseases, where dynamic breast MR (magnetic resonance) images, fast spin echo imaged of pancreaticobiliary duct, and 3-D reconstitution images using a 1.5T MR scanner and 3.0T MR scanner were taken. As a result of the study, the signal-to-noise ratio in the subtracted breast image before and after administering the contrast agent and in the reconstructed 3-D breast image showed a high ratio in the reconstructed image of lesional tissue, relevant tissue, and fat tissue. However, no statistically meaningful differences were found in the contrast-to-noise ratio of the two images. In the case of the MRCP image, no differences were found in the ratios of the fast spin echo image and reconstructed 3-D image.

• 대한자기공명의과학회:학술대회논문집
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• 대한자기공명의과학회 1997년도 제2차 추계학술대회 초록집
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• pp.54-54
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• 1997

• Korean Journal of Radiology
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• 제24권10호
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• pp.983-995
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• 2023

Objective: To compare the diagnostic performance and interobserver agreement between contrast-enhanced computed tomography (CECT) and contrast-enhanced magnetic resonance imaging (CE-MRI) with magnetic resonance cholangiopancreatography (MRCP) for evaluating the resectability in patients with extrahepatic cholangiocarcinoma (eCCA). Materials and Methods: This retrospective study included treatment-naïve patients with pathologically confirmed eCCA, who underwent both CECT and CE-MRI with MRCP using extracellular contrast media between January 2015 and December 2020. Among the 214 patients (146 males; mean age ± standard deviation, 68 ± 9 years) included, 121 (56.5%) had perihilar cholangiocarcinoma. R0 resection was achieved in 108 of the 153 (70.6%) patients who underwent curative-intent surgery. Four fellowship-trained radiologists independently reviewed the findings of both CECT and CE-MRI with MRCP to assess the local tumor extent and distant metastasis for determining resectability. The pooled area under the receiver operating characteristic curve (AUC), sensitivity, and specificity of CECT and CE-MRI with MRCP were compared using clinical, surgical, and pathological findings as reference standards. The interobserver agreement of resectability was evaluated using Fleiss kappa (κ). Results: No significant differences were observed between CECT and CE-MRI with MRCP in the pooled AUC (0.753 vs. 0.767), sensitivity (84.7% [366/432] vs. 90.3% [390/432]), and specificity (52.6% [223/424] vs. 51.4% [218/424]) (P > 0.05 for all). The AUC for determining resectability was higher when CECT and CE-MRI with MRCP were reviewed together than when CECT was reviewed alone in patients with discrepancies between the imaging modalities or with indeterminate resectability (0.798 [0.754-0.841] vs. 0.753 [0.697-0.808], P = 0.014). The interobserver agreement for overall resectability was fair for both CECT (κ = 0.323) and CE-MRI with MRCP (κ = 0.320), without a significant difference (P = 0.884). Conclusion: CECT and CE-MRI with MRCP showed no significant differences in the diagnostic performance and interobserver agreement in determining the resectability in patients with eCCA.

• Investigative Magnetic Resonance Imaging
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• 제20권4호
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• pp.254-258
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• 2016

Spontaneous perforation of the bile duct without any traumatic or iatrogenic injury is extremely rare. We report a case of abscess formation related to spontaneous perforation of the common bile duct by a gallstone, mimicked a cholecochal cyst.

• Investigative Magnetic Resonance Imaging
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• 제18권2호
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• pp.171-175
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• 2014

간문맥으로 파열된 췌장 가성낭종은 매우 드문 합병증이며, 자기공명영상으로 확진된 경우는 3예만 보고되어 있다. 저자들은 50세 남자 환자에서 가성낭종과 간문맥 사이에 형성된 누공을 자기공명영상을 이용하여 비침습적으로 확진한 증례를 보고한다. T2강조영상 및 자기공명 담체관조영술에서 간문맥, 상장간막정맥, 그리고 비장정맥 내에 액체신호가 보였으며, 가성낭종과 간문맥이 직접 연결된 소견을 보였다.

• Tuberculosis and Respiratory Diseases
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• 제76권5호
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• pp.240-244
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• 2014

Pancreaticothoracic fistula is a rare complication of acute or chronic alcoholic pancreatitis. It may present with various symptoms, like dyspnea, abdominal pain, cough, chest pain, fever, back pain, hemoptysis, fatigue, or orthopnea. Pancreaticothoracic fistula can be detected by magnetic resonance cholangiopancreatography (MRCP), endoscopic retrograde cholangiopancreatography (ERCP), or computed tomography. MRCP has high sensitivity and fewer side effects, and thus it has recently been recommended as the first choice for the detection of pancreaticothoracic fistula. On the other hand, ERCP enables the detection and treatment of pancreaticothoracic fistula and allows for stent insertion; for this reason it is a commonly used modality in pancreaticothoracic fistula cases. Herein, the authors describe a case of pancreaticothoracic fistula detected by ERCP and MRCP that manifested only respiratory symptoms, namely hemoptysis and pneumothorax without abdominal pain, which commonly accompanies pancreatitis.

• Parasites, Hosts and Diseases
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• 제61권2호
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• pp.194-197
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• 2023

Ascaris lumbricoides causes one of the most common soil-transmitted helminthiases globally. The worms mostly infect the human small intestine and elicit negligible or nonspecific symptoms, but there are reports of extraintestinal ectopic ascariasis. We describe a rare case of biliary ascariasis mistaken for biliary stent in a 72-year-old female patient with a history of liver resection. She visited our outpatient clinic complaining of right upper quadrant pain and fever for the past week. She had previously undergone left lateral sectionectomy for recurrent biliary and intrahepatic duct stones 2 years ago. Besides mildly elevated gamma-glutamyl transferase levels, her liver function tests were normal. Magnetic resonance cholangiopancreatography revealed a linear filling defect closely resembling an internal stent from the common bile duct to the right intrahepatic bile duct. A live female A. lumbricoides adult worm was removed by endoscopic retrograde cholangiopancreatography (ERCP). Despite a significant decrease of the ascariasis prevalence in Korea, cases of biliary ascariasis are still occasionally reported. In this study, a additional case of biliary ascariasis, which was radiologically misdiagnosed as the biliary stent, was described in a hepatic resection patient by the worm recovery with ERCP in Korea.

• Investigative Magnetic Resonance Imaging
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• 제5권1호
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• pp.49-56
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• 2001

목적 자기공명 담관췌장조영술(MR Cholangiopancreatography, 이하 MRCP)에서 음성 경구 조영제로 사용한 초상자성 산화철 (Superparamagnetic iron oxide, SPIO) 제제의 유용성을 영상 질의 향상 효과를 통하여 알아보고자 하였다. 대상 및 방법: 임상소견, 이학적 검사 및 초음파 검사에서 담도와 췌장질환이 의심되었던 48명의 환자와 자원자 6명을 대상으로 하였다 음성 경구 조영제로 사용한 SPIO 제재의 적정 농도의 선택을 위해 정주용 SPIO제재 0.5ml, 0.75m1, 1 ml, 1.5 ml 및 2ml을 500m1 물에 희석시켜 가상 실험을 통하여 72강조영상에서 물의 신호강도가 완전히 소실되는 최소농도를 산출하였다. MRCP영상은 1.57를 이용하여 지방억제 HASTE (half-courier acquisition single-shot turbo spin echo) 와 터보스핀에코(Turbo spin echo) 기법을 이용하여 얻었다. 조영 후 영상은 음성 경구 조영제 300m1를 경구 섭취하고 10분 후에 얻었고, 조영 전 후 영상을 최대 신호 투영법으로 재구성하였다. 영상 분석은 조영 전 영상에 비교하여 위 십이지장내의 액체의 고신호강도에 따른 총수담판 및 췌관의 묘출의 방해 정도 및 진단의 향상 정도를 두 명의 방사선과 의사가 합의하여 정성적으로 분석하였다. 결과: 가상 실험에서, 22.4 ugFe/ml 농도의 혼합액 (Feridex I ml 용액을 자유수 500m1에 희석하여 만든 농도)에서의 신호강도 소실 백분율의 증가가 가장 현저한 변화를 보였다. 영상분석에서는, 조영 후 영상이 조영 전 영상에 비해 영상의 질이 향상되었다. 또한 환자의 25% (12/48)에서 조영 전 영상에 비하여 더 정화한 진단을 가능하게 하였다. 결론. MRCP영상 획득 시 음성 경구 조명제로서 사용된 초상자성 산화철 (SPIO) 제재는 영상질의 향상시켜 담도 및 췌장질환을 평가하는데 유용할 것으로 사료된다.

• Journal of Magnetics
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• 제17권2호
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• pp.138-144
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• 2012

3-dimensional magnetic resonance cholangiopancreatography (MRCP) images reconstructed using the maximum intensity projection technique were analyzed qualitatively in patients diagnosed with pancreatobiliary diseases to determine their diagnostic utility. Single shot fast spin echo (SSFSE), fast spin echo (FSE) and 3-dimensional reconstructive images were acquired from 20 patients diagnosed histologically with pancreatobiliary diseases using a 3.0T MR scanner. According to qualitative analysis, the fast spin echo images and 3-dimensional reconstructed images of the hepatic duct, gall bladder and common bile duct had a higher signal to noise ratio (SNR) than the single shot fast spin echo images. Fast spin echo images and 3-dimensional reconstructed images did not show any differences. The contrast to noise ratio of the hepatic duct, gallbladder and common bile duct on the fast spin echo images and 3-dimensional reconstructed images was higher than that of the single shot fast spin echo images. The fast spin echo images and 3-dimensional reconstructed images showed similar quality.