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Liver anatomy

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https://www.readbyqxmd.com/read/28207553/laparoscopic-living-donor-right-hemihepatectomy-with-venous-outflow-reconstruction-using-cadaveric-common-iliac-artery-allograft-case-report-and-literature-review
#1
Jiaxin Li, Jiwei Huang, Hong Wu, Yong Zeng
RATIONALE: With the development of laparoscopic technique, the total laparoscopic living donor right hemihepatectomy (LLDRH) procurement surgery has been successfully performed in many liver transplant centers all over the world, and the number of cases is continuing to increase. We report our case of laparoscopic right graft resection with venous outflow reconstruction using cadaveric common iliac artery allograft in our center and review literatures about total LLDRH surgery. PATIENT CONCERNS AND DIAGNOSES: A 40-year-old male living donor for right hepatectomy was selected after pretransplant evaluation including laboratory tests, liver volume, anatomy of hepatic vein, artery, portal vein, and bile duct...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28156078/systematic-extrahepatic-glissonean-pedicle-isolation-for-anatomical-liver-resection-based-on-laennec-s-capsule-proposal-of-a-novel-comprehensive-surgical-anatomy-of-the-liver
#2
REVIEW
Atsushi Sugioka, Yutaro Kato, Yoshinao Tanahashi
Anatomical liver resection with the Glissonean pedicle isolation is widely approved as an essential procedure for safety and curability. Especially, the extrahepatic Glissonean pedicle isolation without parenchymal destruction should be an ideal procedure. However, the surgical technique has not been standardized due to a lack of anatomical understanding. Herein, we proposed a novel comprehensive surgical anatomy of the liver based on Laennec's capsule that would give a theoretical background to the extrahepatic Glissonean pedicle isolation...
January 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28154775/three-dimensional-printing-review-of-application-in-medicine-and-hepatic-surgery
#3
Rui Yao, Gang Xu, Shuang-Shuang Mao, Hua-Yu Yang, Xin-Ting Sang, Wei Sun, Yi-Lei Mao
Three-dimensional (3D) printing (3DP) is a rapid prototyping technology that has gained increasing recognition in many different fields. Inherent accuracy and low-cost property enable applicability of 3DP in many areas, such as manufacturing, aerospace, medical, and industrial design. Recently, 3DP has gained considerable attention in the medical field. The image data can be quickly turned into physical objects by using 3DP technology. These objects are being used across a variety of surgical specialties. The shortage of cadaver specimens is a major problem in medical education...
December 2016: Cancer Biology & Medicine
https://www.readbyqxmd.com/read/28134003/development-of-a-patient-specific-3d-printed-liver-model-for-preoperative-planning
#4
Marta J Madurska, Matthieu Poyade, David Eason, Paul Rea, Angus J M Watson
INTRODUCTION: Liver surgery is widely used as a treatment modality for various liver pathologies. Despite significant improvement in clinical care, operative strategies, and technology over the past few decades, liver surgery is still risky, and optimal preoperative planning and anatomical assessment are necessary to minimize risks of serious complications. 3D printing technology is rapidly expanding, and whilst appliactions in medicine are growing, but its applications in liver surgery are still limited...
January 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28132039/hepatic-arterial-anatomy-variations-in-patients-with-hepatocellular-carcinoma-evaluated-by-computed-tomography-angiography
#5
N Onashvili, M Kutateladze, N Tugushi, I Avazashvili, M Mizandari
Hepatocellular carcinoma (HCC) is the most common primary liver malignancy and one of the major reasons for performing percutaneous endovascular procedures or liver surgery. Hepatic arterial anatomy is of major importance in performing these procedures on the liver. The aim of our study was to estimate the prevalence of various hepatic arterial variants in HCC patients. 78 patients were included in the study. Abdominal multiphase Computed Tomography scans of all patients have been assessed for presence of the hepatic arterial supply anatomical variations...
December 2016: Georgian Medical News
https://www.readbyqxmd.com/read/28128721/effect-of-right-posterior-bile-duct-anatomy-on-biliary-complications-in-patients-undergoing-right-lobe-living-donor-liver-transplant
#6
Tugan Tezcaner, Nadire Dinç, Feza Y Karakayalı, Mahir Kırnap, Mehmet Coşkun, Gökhan Moray, Mehmet Haberal
OBJECTIVES: Our aim was to evaluate the influence of the localization of right posterior bile duct anatomy relative to portal vein of the donors on posttransplant bile duct complications. MATERIALS AND METHODS: We retrospectively investigated 141 patients who had undergone living donor liver transplant using right hemiliver grafts. The patients were classified based on the pattern of the right posterior bile duct and divided into infraportal and supraportal types...
January 27, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28126253/study-on-the-segmentation-of-the-right-anterior-sector-of-the-liver
#7
Tomoki Kobayashi, Tomoki Ebata, Yukihiro Yokoyama, Tsuyoshi Igami, Gen Sugawara, Takashi Mizuno, Junpei Yamaguchi, Masato Nagino
BACKGROUND: The segmentation of the right anterior sector of the liver still is debatable due to the lack of an anatomic landmark of the boundary between Couinaud segments V and VIII (cranio-caudal segmentation). Some authors have proposed the concept of a ventro-dorsal segmentation. The aim of this study was to evaluate which concept of segmentation better reflects the anatomy. METHODS: Using 3-dimensional computed tomography software, the ramification pattern of the right anterior portal vein was examined in 100 patients...
January 23, 2017: Surgery
https://www.readbyqxmd.com/read/28112399/estimating-organ-doses-from-tube-current-modulated-ct-examinations-using-a-generalized-linear-model
#8
Maryam Bostani, Kyle McMillan, Peiyun Lu, Grace Hyun J Kim, Dianna Cody, Gary Arbique, S Bruce Greenberg, John J DeMarco, Chris H Cagnon, Michael F McNitt-Gray
PURPOSE: Currently available Computed Tomography dose metrics are mostly based on fixed tube current Monte Carlo (MC) simulations and/or physical measurements such as the size specific dose estimate (SSDE). In addition to not being able to account for Tube Current Modulation (TCM), these dose metrics do not represent actual patient dose. The purpose of this study was to generate and evaluate a dose estimation model based on the Generalized Linear Model (GLM) which extends the ability to estimate organ dose from tube current modulated examinations by incorporating regional descriptors of patient size, scanner output and other scan-specific variables as needed...
January 23, 2017: Medical Physics
https://www.readbyqxmd.com/read/28107282/early-posthepatoportoenterostomy-predictors-of-native-liver-survival-in-biliary-atresia
#9
Scott Nightingale, Michael O Stormon, Edward V O'Loughlin, Albert Shun, Gordon Thomas, Eric I Benchimol, Andrew S Day, Susan Adams, Edward Shi, Chee Y Ooi, Binita M Kamath, Annie Fecteau, Jacob C Langer, Eve A Roberts, Simon C Ling, Vicky L Ng
OBJECTIVES: Most infants with biliary atresia (BA) require liver transplantation (LT) after hepatoportoenterostomy (HPE), including those who initially clear jaundice. The aim of the present study was to identify clinical and routine laboratory factors in infants with BA post-HPE that predict native liver survival at 2 years. METHODS: A retrospective cohort study was conducted in 217 patients with BA undergoing HPE in Sydney, Australia and Toronto, Canada between January 1986 and July 2009...
February 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28093301/protocol-driven-management-of-suspected-common-duct-stones
#10
Anthony Manning, Richard Frazee, Stephen Abernathy, Claire Isbell, Travis Isbell, Justin Regner, Yolanda Munoz Maldanado, Randall Smith
INTRO: Common duct stones can be diagnosed by magnetic resonance cholangiopancreatography (MRCP), endoscopic ultrasound/endoscopic retrograde cholangiopancreatography (EUS/ERCP), and intra-operative cholangiogram (IOC). In 2015, our group adopted a standard approach of preoperative EUS/ERCP followed by laparoscopic cholecystectomy for patients with an admission bilirubin over 4.0 (mg/dL). For bilirubin less than 4.0, laparoscopic cholecystectomy with IOC was the initial procedure. Post-operative EUS/ERCP with endoscopic sphincterotomy was pursued for positive IOC...
January 13, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28078375/assessing-intra-arterial-complications-of-planning-and-treatment-angiograms-for-y-90-radioembolization
#11
Osman Ahmed, Mikin V Patel, Abdulrahman Masrani, Bradford Chong, Mohammed Osman, Jordan Tasse, Jayesh Soni, Ulku Cenk Turba, Bulent Arslan
PURPOSE: To report hepatic arterial-related complications encountered during planning and treatment angiograms for radioembolization and understand any potential-associated risk factors. MATERIALS AND METHODS: 518 mapping or treatment angiograms for 180 patients with primary or metastatic disease to the liver treated by Yttrium-90 radioembolization between 2/2010 and 12/2015 were retrospectively reviewed. Intra-procedural complications were recorded per SIR guidelines...
January 11, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28066983/endoscopic-ultrasound-guided-antegrade-biliary-stenting-for-unresectable-malignant-biliary-obstruction-in-patients-with-surgically-altered-anatomy-a-single-center-prospective-pilot-study
#12
Takuji Iwashita, Ichiro Yasuda, Tsuyoshi Mukai, Keisuke Iwata, Shinpei Doi, Shinya Uemura, Masatoshi Mabuchi, Mitsuru Okuno, Masahito Shimizu
BACKGROUND AND AIMS: Endoscopic retrograde cholangiography (ERCP) with biliary stenting for the treatment of unresectable malignant biliary obstruction (MBO) is challenging among patients with surgically altered anatomy. Endoscopic ultrasound-guided antegrade biliary stenting (EUS-ABS) was introduced as an alternative biliary drainage method, although it has not been well studied yet. In this single-center prospective pilot study, we aimed to evaluate the feasibility and safety of EUS-ABS for MBO in patients with surgically altered anatomy...
January 9, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28047839/th-cd-206-08-an-anthropopathic-deformable-phantom-for-geometric-and-dose-accumulation-accuracy-validation-of-deformable-image-registration
#13
Y Liao, H Chen, J Chen, X Gu, X Zhen, L Zhou
PURPOSE: To design and construct a three-dimensional (3D) anthropopathic abdominal phantom for evaluating deformable image registration (DIR) accuracy on images and dose deformation in adaptive radiation therapy (ART). METHOD: Organ moulds, including liver, kidney, spleen, stomach, vertebra and two metastasis tumors, are 3D printed using the contours from an ovarian cancer patient. The organ moulds are molded with deformable gels that made of different mixtures of polyvinyl chloride (PVC) and the softener dioctyl terephthalate...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047754/su-f-t-644-reproducibility-of-target-position-using-moderate-voluntary-breath-hold-during-liver-stereotactic-ablative-radiotherapy
#14
G Cui, N Trakul, E Chang, A Shiu
PURPOSE: To evaluate the reproducibility of target position using moderate voluntary breath-hold during liver stereotactic ablative radiotherapy (SABR). METHODS: Two patients who underwent liver SABR on a Varian TrueBeam STx linac were used for this study. Fiducial markers were placed in and around the target in the liver as surrogates for the target position and motion. GTVs were contoured by assessing tumor extent on contrast enhanced CT. The PTV was created from the GTV by adding 2 mm margins to account for the residual motion during breath-holds...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047564/su-f-j-221-adjusted-dose-and-its-relation-to-radiation-induced-liver-disease-during-hepatocellular-carcinoma-radiotherapy
#15
P Huang, H Li, J Chen, C Ma, Y Gang, S Qin, Y Yin, D Li
PURPOSE: Many patients with hepatocellular carcinoma (HCC) had hepatic anatomy variations as a result of inter-fraction deformation during fractionated radiotherapy, which may result in difference from the planned dose. This study aimed to investigate the relationship between adjusted dose and radiation induced liver disease (RILD) in HCC patients receiving three dimensional conformal radiotherapy (3DCRT). METHODS: Twenty-three HCC patients received conventional fractionated 3DCRT were enrolled in this retrospective investigation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046398/su-g-jep2-07-fusion-optimization-of-multi-contrast-mri-scans-for-mr-based-treatment-planning
#16
L Zhang, F Yin, X Liang, J Cai
PURPOSE: To develop an image fusion method using multiple contrast MRI scans for MR-based treatment planning. METHODS: T1 weighted (T1-w), T2 weighted (T2-w) and diffusion weighted images (DWI) were acquired from liver cancer patient with breath-holding. Image fade correction and deformable image registration were performed using VelocityAI (Varian Medical Systems, CA). Registered images were normalized to mean voxel intensity for each image dataset. Contrast to noise ratio (CNR) between tumor and liver was quantified...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28030474/therapeutic-benefits-of-the-methyl-donor-s-adenosylmethionine-sam-on-nerve-injury-induced-mechanical-hypersensitivity-and-cognitive-impairment-in-mice
#17
Stéphanie Grégoire, Magali Millecamps, Lina Naso, Sonia Do Carmo, A Claudio Cuello, Moshe Szyf, Laura S Stone
Despite considerable advances in understanding mechanisms involved in chronic pain, effective treatment remains elusive. Co-morbid conditions including anxiety, depression and cognitive impairment further impact quality of life. Chronic pain is associated with reversible changes in brain anatomy and function and with long-term changes in gene expression. Epigenetic mechanisms, including DNA methylation, contribute to wide-spread and long-lasting reprogramming of gene expression. We previously reported decreases in global DNA methylation in the mouse frontal cortex six months following induction of neuropathic pain using the Spared Nerve Injury (SNI) model...
December 22, 2016: Pain
https://www.readbyqxmd.com/read/28027615/living-donor-liver-transplantation-using-an-extended-right-lateral-sector-graft
#18
N Yoshida, T Takamoto, T Hashimoto, Y Maruyama, H Abe, K Shimada, T Takayama, M Makuuchi
There are three grafts (left, right and right lateral sector [RLS]) available for adult living donor liver transplantation (LDLT), and we herein report LDLT performed using an extended RLS graft. An extended RLS graft is an RLS plus right paramedian dorsal sector (RPMS-dorsal) graft. In this case, the proportion of the RLS graft of the predicted graft volume (GV) to the recipient's standard liver volume (SLV) was only 17.7%, preoperatively. A three-dimensional (3D) analysis, showed that the RPMS-dorsal branches of the portal veins branched from the posterior trunk not the anterior trunk...
December 27, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/28017834/indocyanine-green-fluorescence-imaging-in-hepatobiliary-surgery
#19
REVIEW
Ali Majlesara, Mohammad Golriz, Mohammadreza Hafezi, Arash Saffari, Esther Wild, Lena Maier-Hein, Beat P Müller-Stich, Arianeb Mehrabi
Indocyanine green (ICG) is a fluorescent dye that has been widely used for fluorescence imaging during hepatobiliary surgery. ICG is injected intravenously, selectively taken up by the liver, and then secreted into the bile. The catabolism and fluorescence properties of ICG permit a wide range of visualization methods in hepatobiliary surgery. We have characterized the applications of ICG during hepatobiliary surgery into: 1) liver mapping, 2) cholangiography, 3) tumor visualization, and 4) partial liver graft evaluation...
December 22, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28012335/is-the-absence-of-right-hepatic-vein-opening-into-inferior-vena-cava-a-contraindication-for-right-lobe-liver-donation-in-living-donor-liver-transplantation-common-hepatic-venous-trunk-a-rare-hepatic-vein-anomaly-a-case-report-and-review
#20
Samrat Ray, T Anila, Sandeep Kumar Jha, Saumitra Rawat, Kishan Singh Rawat, Suresh Kumar Singhvi
INTRODUCTION: In majority of the living liver donors, the left and the middle hepatic veins form a common trunk and the right hepatic vein drains by a separate trunk into the IVC forming two ostial openings. PRESENTATION OF CASE: This report presents a rare challenge to the operating surgeon in which the three major hepatic veins form a common trunk and drain into the IVC through a single ostial opening. It was detected preoperatively by the routine donor imaging studies...
November 18, 2016: International Journal of Surgery Case Reports
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