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3d cholangiography

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https://www.readbyqxmd.com/read/27714420/3d-t2-weighted-and-gd-eob-dtpa-enhanced-3d-t1-weighted-mr-cholangiography-for-evaluation-of-biliary-anatomy-in-living-liver-donors
#1
Larry Cai, Benjamin M Yeh, Antonio C Westphalen, John Roberts, Zhen J Wang
PURPOSE: To investigate whether the addition of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced 3D T1-weighted MR cholangiography (T1w-MRC) to 3D T2-weighted MRC (T2w-MRC) improves the confidence and diagnostic accuracy of biliary anatomy in living liver donors. METHODS: Two abdominal radiologists retrospectively and independently reviewed pre-operative MR studies in 58 consecutive living liver donors. The second-order bile duct visualization on T1w- and T2w-MRC images was rated on a 4-point scale...
October 7, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27595838/coronal-2d-mr-cholangiography-overestimates-the-length-of-the-right-hepatic-duct-in-liver-transplantation-donors
#2
Bohyun Kim, Kyoung Won Kim, So Yeon Kim, So Hyun Park, Jeongjin Lee, Gi Won Song, Dong-Hwan Jung, Tae-Yong Ha, Sung Gyu Lee
PURPOSE: To compare the length of the right hepatic duct (RHD) measured on rotatory coronal 2D MR cholangiography (MRC), rotatory axial 2D MRC, and reconstructed 3D MRC. MATERIALS AND METHODS: Sixty-seven donors underwent coronal and axial 2D projection MRC and 3D MRC. RHD length was measured and categorized as ultrashort (≤1 mm), short (>1-14 mm), and long (>14 mm). The measured length, frequency of overestimation, and the degree of underestimation between two 2D MRC sets were compared to 3D MRC...
September 5, 2016: European Radiology
https://www.readbyqxmd.com/read/27448279/contrast-enhanced-intraoperative-ultrasonic-cholangiography-in-living-donor-hepatectomy
#3
LETTER
Takeshi Urade, Takumi Fukumoto, Masahiro Kido, Atsushi Takebe, Motofumi Tanaka, Kaori Kuramitsu, Hisoka Kinoshita, Hirochika Toyama, Tetsuo Ajiki, Takeshi Iwasaki, Masahiro Tominaga, Yonson Ku
No abstract text is available yet for this article.
October 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27445541/relevance-of-3d-cholangiography-and-transient-elastography-to-assess-cystic-fibrosis-associated-liver-disease
#4
C Lemaitre, S Dominique, E Billoud, M Eliezer, H Montialoux, M Quillard, G Riachi, E Koning, H Morisse-Pradier, G Savoye, C Savoye-Collet, O Goria
Background. Cystic fibrosis-associated liver disease (CFLD) is a major cause of death. The objective of our retrospective study was to describe the relevance of magnetic resonance imaging (MRI) and liver stiffness measurement (LSM) for CFLD evaluation. Methods. All cystic fibrosis adult patients evaluated by MRI and LSM were included. MR signs of portal hypertension (PHT), dysmorphia, or cholangitis were collected and LSM expressed in kPa and Metavir. Results. Of 25 patients, 52% had abnormal MRI. Median LSM was 5...
2016: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/27331082/biliary-complications-following-orthotopic-liver-transplantation-may-contrast-enhanced-mr-cholangiography-provide-additional-information
#5
Piero Boraschi, Francescamaria Donati, Roberto Gigoni, Franco Filipponi
PURPOSE: To assess whether contrast-enhanced T1-weighted MR Cholangiography may provide additional information in the evaluation of biliary complications in orthotopic liver transplant recipients. MATERIAL AND METHODS: Eighty liver transplant patients with suspicion of biliary adverse events underwent MR imaging at 1.5 T scanner. After acquisition of axial T1-/T2-weighted images and conventional T2-weighted MR Cholangiography (image set 1), 3D gradient-echo T1-weighted fat-suppressed LAVA (Liver Acquisition with Volume Acceleration) sequences were obtained about 30 min after intravenous infusion of mangafodipir trisodium (Mn-DPDP,Teslascan(®)) (image set 2)...
2016: European Journal of Radiology Open
https://www.readbyqxmd.com/read/27131338/usefulness-of-3d-hybrid-profile-order-technique-with-3t-magnetic-resonance-cholangiography-comparison-of-image-quality-and-acquisition-time
#6
Koichi Yokoyama, Takeshi Nakaura, Yuji Iyama, Seiji Sakamoto, Atsushi Takemura, Tomoyuki Okuaki, Kazunori Harada, Yasuyuki Yamashita
PURPOSE: To evaluate the image quality and acquisition time of magnetic resonance cholangiopancreatography (MRCP) with and without the 3D hybrid profile order technique. MATERIALS AND METHODS: We studied 32 consecutive patients at 3T. They underwent MRCP with and without the 3D hybrid profile order imaging technique during free breathing and MRCP with the 3D hybrid profile order technique during a single breath-hold. The image acquisition time was 82% shorter with the 3D hybrid profile order technique than without it...
April 30, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/26773644/development-and-validation-of-real-time-simulation-of-x-ray-imaging-with-respiratory-motion
#7
Franck P Vidal, Pierre-Frédéric Villard
We present a framework that combines evolutionary optimisation, soft tissue modelling and ray tracing on GPU to simultaneously compute the respiratory motion and X-ray imaging in real-time. Our aim is to provide validated building blocks with high fidelity to closely match both the human physiology and the physics of X-rays. A CPU-based set of algorithms is presented to model organ behaviours during respiration. Soft tissue deformation is computed with an extension of the Chain Mail method. Rigid elements move according to kinematic laws...
April 2016: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/26694060/thread-sign-in-biliary-intraductal-papillary-mucinous-neoplasm-a-novel-specific-finding-for-mri
#8
Gil-Sun Hong, Jae Ho Byun, Jin Hee Kim, Hyoung Jung Kim, Seung Soo Lee, Seung-Mo Hong, Moon-Gyu Lee
OBJECTIVES: To evaluate thread sign of biliary intraductal papillary mucinous neoplasm (B-IPMN) on magnetic resonance imaging (MRI). METHODS: Thread sign was defined as intraductal linear or curvilinear hypointense striations. Two radiologists independently evaluated the presence and location of thread sign on MR cholangiography (thin-slice, thick-slab and 3D MRC) and axial MR images (T2 TSE, T2 HASTE and DWI) in patients with B-IPMN (n = 38) and in matched control groups with benign (n = 36) or malignant (n = 35) biliary diseases...
September 2016: European Radiology
https://www.readbyqxmd.com/read/26275724/magnetic-resonance-cholangiography-current-and-future-perspectives
#9
Lionel Arrivé, Marianne Hodoul, Antoune Arbache, Lucie Slavikova-Boucher, Yves Menu, Sanaâ El Mouhadi
Magnetic resonance cholangiography (MRC) has become the standard of reference for imaging of the biliary ducts. The use of three-dimensional (3D) sequences has resulted in improved spatial resolution with virtually isotropic voxel and improved signal/noise ratio. In addition to MRC images, 3D fat suppressed T1-weighted MR images should be systematically obtained to search for intrahepatic calculi. MRC plays a major role in the diagnosis of cholangiocarcinoma and assessment of its resectability. With modern MR systems the performance of MR is basically the same that of CT for evaluation of arterial and portal vein extent...
December 2015: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/26176045/3d-reconstruction-aids-surgery-for-complicated-hepatolithiasis
#10
COMPARATIVE STUDY
Tian-Chong Wu, Chi-Hua Fang, Wen-Ying Liu, Wei Cai, Ying-Fang Fan, Jian Yang, Ning Zeng, Shi-Zhen Zhong, Su-Su Bao
BACKGROUND/AIMS: Three-dimensional (3D) imaging may improve surgical interventions for complicated hepatolithiasis. METHODOLOGY: Between July 2008 and December 2012 a total of 131 patients with complicated hepatolithiasis underwent surgical therapy in the Department of Hepatobiliary Surgery Zhujiang Hospital, Southern Medical University. 77 patients received preoperative planning using a computed tomography (CT)-based 3D reconstruction technique, and 54 received treatment based on preoperative planning with traditional imaging (CT, ultrasonography, magnetic resonance imaging/magnetic resonance cholangiography)...
May 2014: Hepato-gastroenterology
https://www.readbyqxmd.com/read/26054319/usefulness-of-operative-planning-based-on-3-dimensional-ct-cholangiography-for-biliary-malignancies
#11
Yukihiro Okuda, Kojiro Taura, Satoru Seo, Kentaro Yasuchika, Takashi Nitta, Kohei Ogawa, Etsuro Hatano, Shinji Uemoto
BACKGROUND: The complexity of hepatic hilar anatomy is an obstacle to precise diagnosis of tumor spread and appropriate operative planning for biliary malignancies. Three-dimensional (3D) cholangiography and angiography may overcome this obstacle and facilitate curative resection. The objective of this study was to evaluate the impact of 3D CT cholangiography on operative planning and outcomes of biliary malignancies. METHODS: From 2009 to 2014, 3DCT cholangiography was performed on 49 patients with biliary malignancies requiring major hepatic resection and extrahepatic bile duct resection...
November 2015: Surgery
https://www.readbyqxmd.com/read/25426932/comparison-of-different-magnetic-resonance-cholangiography-techniques-in-living-liver-donors-including-gd-eob-dtpa-enhanced-t1-weighted-sequences
#12
COMPARATIVE STUDY
Sonja Kinner, Verena Steinweg, Stefan Maderwald, Arnold Radtke, Georgios Sotiropoulos, Michael Forsting, Tobias Schroeder
OBJECTIVES: Preoperative evaluation of potential living liver donors (PLLDs) includes the assessment of the biliary anatomy to avoid postoperative complications. Aim of this study was to compare T2-weighted (T2w) and Gd-EOB-DTPA enhanced T1-weighted (T1w) magnetic resonance cholangiography (MRC) techniques in the evaluation of PLLDs. MATERIALS AND METHODS: 30 PLLDs underwent MRC on a 1.5 T Magnetom Avanto (Siemens, Erlangen, Germany) using (A) 2D T2w HASTE (Half Fourier Acquisition Single Shot Turbo Spin Echo) fat saturated (fs) in axial plane, (B) 2D T2w HASTE fs thick slices in coronal plane, (C) free breathing 3D T2w TSE (turbo spin echo) RESTORE (high-resolution navigator corrected) plus (D) maximum intensity projections (MIPs), (E) T2w SPACE (sampling perfection with application optimized contrasts using different flip angle evolutions) plus (F) MIPs and (G) T2w TSE BLADE as well as Gd-EOB-DTPA T1w images without (G) and with (H) inversion recovery...
2014: PloS One
https://www.readbyqxmd.com/read/25022980/an-increased-flip-angle-in-late-phase-gd-eob-dtpa-mri-shows-improved-performance-in-bile-duct-visualization-compared-to-t2w-mrcp
#13
Lars Stelter, Patrick Freyhardt, Christian Grieser, Thula Walter, Dominik Geisel, Alexander Baur, Daniel Seehofer, Timm Denecke
OBJECTIVES: To estimate the additional value of an increased flip angle of 35° in late phase Gd-EOB-DTPA-enhanced magnetic resonance cholangiography, as compared to T2w-MRCP. METHODS: 40 adult patients underwent Gd-EOB-DTPA enhanced MRI of the liver including a T2-weighted 3D TSE MRCP (T2w-MRCP) as well as a late phase T1-weighted THRIVE sequences applying a flip angle of 35° (fa35). Two experienced observers evaluated the images regarding the delineation of the different biliary regions using a three-point grading system...
October 2014: European Journal of Radiology
https://www.readbyqxmd.com/read/24719915/three-dimensional-computed-tomographic-cholangiography-as-a-novel-diagnostic-tool-for-evaluation-of-bile-duct-invasion-of-perihilar-cholangiocarcinoma
#14
COMPARATIVE STUDY
Tetsuo Ajiki, Takumi Fukumoto, Kimihiko Ueno, Taro Okazaki, Ippei Matsumoto, Yonson Ku
BACKGROUND/AIMS: This study assessed the results of preoperative evaluation of ductal invasion by perihilar cholangiocarcinoma, imaged using 3-dimensional (3D) CT cholangiography compared to conventional endoscopic retrograde cholangiography (ERC) and magnetic resonance cholangiopancreatography (MRCP). METHODOLOGY: ERC, MRCP and 3D-CT cholangiography were planned in 24 patients with preoperatively diagnosed perihilar cholangiocarcinoma. Evaluations of bile duct images using each of 3 modalities were classified into 2 groups (the Visualization uncertain (VU) group and the Visualization certain and clear (VCC) group) according to the quality of biliary images...
November 2013: Hepato-gastroenterology
https://www.readbyqxmd.com/read/24570909/correlation-between-3d-mrcp-and-intra-operative-findings-in-right-liver-donors
#15
Aly Ragab, Reyold I Lopez-Soler, Aytekin Oto, Giuliano Testa
A correct preoperative definition of the hepatic duct confluence anatomy of right liver living donors is a pivotal step in determining their candidacy for donation and planning the surgery. The purposes of this study are to evaluate the accuracy of three-dimensional Magnetic Resonance Cholangiography (3D MRCP) when compared with intraoperative cholangiography (IOC) in assessing biliary anatomy and to identify imaging characteristics that may help predict the yield of hepatic duct orifices in the right liver graft...
February 2013: Hepatobiliary Surgery and Nutrition
https://www.readbyqxmd.com/read/24505457/three-dimensional-magnetic-resonance-cholangiopancreatography-for-the-diagnosis-of-biliary-atresia-in-infants-and-neonates
#16
Bo Liu, Jinhua Cai, Ye Xu, Xuehua Peng, Helin Zheng, Kaiping Huang, Jing Yang
BACKGROUND AND OBJECTIVE: Magnetic resonance cholangiopancreatography (MRCP) is widely accepted for visualization of the biliary system. However, the sensitivity and specificity of MRCP for the diagnosis of biliary atresia (BA) are still not fully elucidated. This study aimed to investigate the diagnostic value of three-dimensional MRCP (3D-MRCP) for BA in a large cohort of cholestatic infants and neonates. METHODS: One hundred ninety patients with infant jaundice underwent 3D-MRCP and one or more of the following: (1) intraoperative cholangiography, (2) laparoscopic exploration and pathological examination, or/and (3) clinical therapy...
2014: PloS One
https://www.readbyqxmd.com/read/24156798/can-biliary-cyst-communication-be-predicted-by-gd-eob-dtpa-enhanced-mr-cholangiography-before-treatment-for-hepatic-hydatid-disease
#17
M Kantarci, B Pirimoglu, H Ogul, U Bayraktutan, S Eren, B Aydinli, G Ozturk, L Karaca
AIM: To evaluate the role of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance cholangiography (MRC) in the evaluation of biliary-cyst communication (BCC) before treatment for hepatic hydatid disease (HHD). MATERIAL AND METHODS: Thirty-one patients with clinical and laboratory follow-up for HHD with suspected diagnosis of BCC underwent three-dimensional (3D) T2-weighted MRC and T1-weighted contrast-enhanced MRC, dynamic 3D gradient echo (GRE) sequences, using Gd-EOB-DTPA to identify the presence or absence of BCC...
January 2014: Clinical Radiology
https://www.readbyqxmd.com/read/24105679/usefulness-of-the-space-pulse-sequence-at-1-5t-mr-cholangiography-comparison-of-image-quality-and-image-acquisition-time-with-conventional-3d-tse-sequence
#18
COMPARATIVE STUDY
Takeshi Nakaura, Masafumi Kidoh, Natsuki Maruyama, Tetsuya Kawahara, Tomohiro Namimoto, Yoshinari Sakai, Kazunori Harada, Yasuyuki Yamashita
PURPOSE: To prospectively evaluate the image quality and image acquisition time at 3D magnetic resonance cholangiopancreatography (MRCP) using sampling perfection with application optimized contrasts (SPACE) and conventional turbo-spin-echo (TSE) sequences. MATERIALS AND METHODS: We acquired navigator-triggered SPACE and conventional 3D-TSE MRCP images using the same parameters where possible for 30 patients and compared the image acquisition time, contrast, and contrast-to-noise ratio (CNR) of the common bile duct (CBD)...
November 2013: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/24088317/one-stop-shop-for-3-dimensional-anatomy-of-hepatic-vasculature-and-bile-duct-with-special-reference-to-biliary-image-reconstruction
#19
Ch Enkhbold, M Shimada, T Utsunomiya, H Ishibashi, S Yamada, M Kanamoto, Y Arakawa, Z Ikemoto, E Morine, S Imura
BACKGROUND/AIMS: Three-dimensional CT has become an essential tool for successful hepatic surgery. Up to now, efforts have been made to simultaneously visualize hepatic vasculature and bile ducts. Herein, we introduce a new one-stop shop approach to hepatic 3D-anatomy, using a standard enhanced MDCT alone. METHODOLOGY: A 3D-reconstruction of hepatic vasculature was made using data from contrast enhanced MDCT and SYNAPSE VINCENT software. We identified bile ducts from axial 2D image, and then reconstructed the 3D image...
November 2013: Hepato-gastroenterology
https://www.readbyqxmd.com/read/24025264/three-dimensional-computed-tomographic-cholangiography-as-a-novel-diagnostic-tool-for-evaluation-of-bile-duct-invasion-of-perihilar-cholangiocarcinoma
#20
Tetsuo Ajiki, Takumi Fukumoto, Kimihiko Ueno, Taro Okazaki, Ippei Matsumoto And
Background/Aims: This study assessed the results of preoperative evaluation of ductal invasion by perihilar cholangiocarcinoma, imaged using 3-dimensional (3D) CT cholangiography compared to conventional endoscopic retrograde cholangiography (ERC) and magnetic resonance cholangiopancreatography (MRCP). Methodology: ERC, MRCP and 3D-CT cholangiography were planned in 24 patients with preoperatively diagnosed perihilar cholangiocarcinoma. Evaluations of bile duct images using each of 3 modalities were classified into 2 groups (the Visualization uncertain (VU) group and the Visualization certain and clear (VCC) group) according to the quality of biliary images...
September 12, 2013: Hepato-gastroenterology
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