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https://www.readbyqxmd.com/read/27885540/automatic-abdominal-multi-organ-segmentation-using-deep-convolutional-neural-network-and-time-implicit-level-sets
#1
Peijun Hu, Fa Wu, Jialin Peng, Yuanyuan Bao, Feng Chen, Dexing Kong
PURPOSE: Multi-organ segmentation from CT images is an essential step for computer-aided diagnosis and surgery planning. However, manual delineation of the organs by radiologists is tedious, time-consuming and poorly reproducible. Therefore, we propose a fully automatic method for the segmentation of multiple organs from three-dimensional abdominal CT images. METHODS: The proposed method employs deep fully convolutional neural networks (CNNs) for organ detection and segmentation, which is further refined by a time-implicit multi-phase evolution method...
November 24, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27884614/robotic-major-hepatectomy-is%C3%A2-there-a-learning-curve
#2
Po-Da Chen, Chao-Yin Wu, Rey-Heng Hu, Chiung-Nien Chen, Ray-Hwang Yuan, Jin-Tung Liang, Hong-Shiee Lai, Yao-Ming Wu
BACKGROUND: Robotic hepatectomy has been suggested as a safe and effective management of liver disease. However, no large case series have documented the learning curve for robotic major hepatectomy. METHOD: We conducted a retrospective study for robotic major hepatectomy performed by the same operative team between January 2012 and October 2015 and evaluated the learning curve for operation time using the cumulative sum method, presented as cumulative sumoperation time...
November 21, 2016: Surgery
https://www.readbyqxmd.com/read/27884545/a-survey-of-current-practices-and-barriers-to-expanding-laparoscopic-hpb-surgery-in-canada
#3
Ricky Jrearz, Anand Govindarajan, Shiva Jayaraman
BACKGROUND: The purpose of this survey was to determine the extent to which laparoscopy is used in hepatopancreatobiliary (HPB) resections in Canada, and to assess HPB surgeons' attitudes and their perceived barriers to its further adoption. METHODS: Using an electronic questionnaire, 68 Canadian Hepatopancreatobiliary Association (CHPBA) surgical members were surveyed. The questionnaire consisted of 12 questions regarding: surgeon demographics, the use and limitations of laparoscopy in their practice, and interest in increasing the use of laparoscopic techniques...
November 21, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27880735/automatic-3d-liver-segmentation-based-on-deep-learning-and-globally-optimized-surface-evolution
#4
Peijun Hu, Fa Wu, Jialin Peng, Ping Liang, Dexing Kong
The detection and delineation of the liver from abdominal 3D computed tomography (CT) images are fundamental tasks in computer-assisted liver surgery planning. However, automatic and accurate segmentation, especially liver detection, remains challenging due to complex backgrounds, ambiguous boundaries, heterogeneous appearances and highly varied shapes of the liver. To address these difficulties, we propose an automatic segmentation framework based on 3D convolutional neural network (CNN) and globally optimized surface evolution...
December 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27837084/intraoperative-diagnosis-of-intracardiac-thrombus-during-orthotopic-liver-transplantation-with-transesophageal-echocardiography-a-case-series-and-literature-review
#5
Adam A Dalia, Hisham Khan, Antolin S Flores
Anesthesia for orthotopic liver transplantation (OLT) is challenging for any anesthesiologist as the patients undergoing this procedure are among the most critically ill. Adding to the underlying complexity of OLT management is the rare complication of an intracardiac thrombus (ICT). Intracardiac thrombi can present following liver allograft reperfusion resulting in high morbidity and mortality. Currently there is no consensus treatment for ICT, and the gold standard for diagnosis is intraoperative transesophageal echocardiography (TEE); these 2 factors lead to a dangerous amalgam of the difficulty in diagnosing and treating the disease...
November 10, 2016: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27815743/presence-of-a-fellowship-improves-perioperative-outcomes-following-hepatopancreatobiliary-procedures
#6
Maria S Altieri, Jie Yang, Donglei Yin, Catherine Frenkel, Mark Talamini, Dana A Telem, Aurora Pryor
INTRODUCTION: There is an increase in subspecialization and in the number of surgeons seeking fellowship training in the USA. Little is known regarding the effect of hepatopancreatobiliary (HPB) fellowship programs' status of an institution on perioperative outcomes. This study aims to examine the effect of such status on perioperative outcomes across all institutions following complex surgeries involving HPB procedures in the State of New York (NYS). METHODS: The Statewide Planning and Research Cooperative System administrative database was used to identify several complex surgeries involving the pancreas, liver, and gallbladder by using ICD-9 codes for inpatient procedures between 2012 and 2014...
November 4, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27746036/perception-of-training-in-hepatopancreatobiliary-surgery-among-general-surgery-residents-in-the-americas
#7
Mohd Raashid Sheikh, Houssam Osman, Muhammad Umar Butt, Dhiresh Rohan Jeyarajah
BACKGROUND: Hepatopancreatobiliary (HPB) surgery experience during residency in the Americas is limited. Residents interested in HPB surgery have different options available for further training. This study evaluated training in HPB surgery received during general surgery (GS) residency, and sought to determine the perception of fellowship training in HPB surgery. METHODS: An anonymous survey was distributed to all 259 GS residency programs in the United States...
October 13, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27728873/a-laparoscopy-based-method-for-brdf-estimation-from-in-vivo-human-liver
#8
A L P Nunes, A Maciel, L T Cavazzola, M Walter
While improved visual realism is known to enhance training effectiveness in virtual surgery simulators, the advances on realistic rendering for these simulators is slower than similar simulations for man-made scenes. One of the main reasons for this is that in vivo data is hard to gather and process. In this paper, we propose the analysis of videolaparoscopy data to compute the Bidirectional Reflectance Distribution Function (BRDF) of living organs as an input to physically based rendering algorithms. From the interplay between light and organic matter recorded in video images, we propose the definition of a process capable of establishing the BRDF for inside-the-body organic surfaces...
September 29, 2016: Medical Image Analysis
https://www.readbyqxmd.com/read/27688661/development-of-a-prognostic-scoring-system-for-resectable-hepatocellular-carcinoma
#9
Carlo Sposito, Stefano Di Sandro, Federica Brunero, Vincenzo Buscemi, Carlo Battiston, Andrea Lauterio, Marco Bongini, Luciano De Carlis, Vincenzo Mazzaferro
AIM: To develop a prognostic scoring system for overall survival (OS) of patients undergoing liver resection (LR) for hepatocellular carcinoma (HCC). METHODS: Consecutive patients who underwent curative LR for HCC between 2000 and 2013 were identified. The series was randomly divided into a training and a validation set. A multivariable Cox model for OS was fitted to the training set. The beta coefficients derived from the Cox model were used to define a prognostic scoring system for OS...
September 28, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27621774/rationale-and-design-of-the-cardiorespiratory-fitness-and-hospitalization-events-in-armed-forces-study-in-eastern-taiwan
#10
Gen-Min Lin, Yi-Hwei Li, Chung-Jen Lee, Jeng-Chuan Shiang, Ko-Huan Lin, Kai-Wen Chen, Yu-Jung Chen, Ching-Fen Wu, Been-Sheng Lin, Yun-Shun Yu, Felicia Lin, Fung-Ying Su, Chih-Hung Wang
AIM: To investigate the association between cardiorespiratory fitness and hospitalization events in a cohort of large voluntary arm forces in Taiwan. METHODS: The cardiorespiratory fitness and hospitalization events in armed forces (CHIEF) is a retrospective cohort consisting of more than 4000 professional military members aged 18-50 years in Eastern Taiwan. All participants received history taking, physical examination, chest radiography, 12-lead electrocardiography, blood tests for cell counts and fasting glucose, lipid profiles, uric acid, renal function and liver function in the Hualien Armed Forces General Hospital during 2014...
August 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27591427/liver-fibrosis-assessment-by-fibroscan-compared-with-pathological-findings-of-liver-resection-specimen-in-hepatitis-c-infection
#11
Yuki Nakamura, Hiroshi Aikata, Takayuki Fukuhara, Fumi Honda, Kei Morio, Reona Morio, Masahiro Hatooka, Tomoki Kobayashi, Yuko Nagaoki, Tomokazu Kawaoka, Masataka Tsuge, Akira Hiramatsu, Michio Imamura, Yoshiiku Kawakami, Hidenori Ochi, Tsuyoshi Kobayashi, Hideki Ohdan, Noriyuki Shiroma, Koji Arihiro, Kazuaki Chayama
AIM: FibroScan is a tool for the non-invasive diagnosis of hepatic fibrosis. Previous studies have compared liver stiffness to percutaneous liver biopsy findings, but no study has compared liver stiffness to liver resection specimen findings. The aim of this study was to compare FibroScan measurements to resected liver specimen findings. METHODS: From April 2011 to November 2015, a total of 114 patients with liver tumor and hepatitis C were enrolled. We divided them into two groups, the training set and validation set...
September 3, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/27546012/objective-assessment-of-trainee-operative-experience-in-a-tertiary-hepatobiliary-unit
#12
H M Joshi, E Alabraba, A Tufo, A Zone, P Ghaneh, S W Fenwick, G J Poston, H Z Malik
INTRODUCTION: Indicative numbers for completion of training (CCT) in the UK requires 35 upper Gastrointestinal/Hepatobiliary resections and 110 (50 non HPB trainees) cholecystectomies. We aim to identify whether the training experience in our centre meets the CCT requirements for hepatobiliary surgery and compare training opportunities to those in international fellowships. METHODS: We retrospectively reviewed our hospital's operating theatre database for all patients undergoing a liver or gallbladder resection between January 2008 and July 2015 using corresponding procedural codes and consultant name...
October 2016: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27541973/the-practice-of-laparoscopic-liver-surgery-in-belgium-a-national-survey
#13
Federico Tomassini, Vincenzo Scuderi, Giammauro Berardi, Alexandra Dili, Mathieu D'Hondt, Gregory Sergeant, Catherine Hubert, Frederik Huysentruyt, Frederik Berrevoet, Valerio Lucidi, Roberto Ivan Troisi
BACKGROUND: Laparoscopic liver surgery (LLS) gained popularity bringing several advantages including decreased morbidity and reduction of length of hospital stay compared to open. METHODS: To understand practice and evolution of LLS in Belgium, a 20-questions survey was sent to all members of the Royal Belgian Society for Surgery, the Belgian Section of Hepato-Pancreatic and Biliary Surgery and the Belgian Group for Endoscopic Surgery. RESULTS: Thirty-seven surgical units representing 61 surgeons performing LLS in Belgium responded: 50% from regional hospitals, 28% from university and 22% from peripheral hospitals...
August 19, 2016: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/27488214/current-south-african-clinical-practice-in-debulking-surgery-for-ovarian-cancer
#14
Jana Billson, F Haynes van der Merwe, Robbert P Soeters
INTRODUCTION: The aim of this study was to assess practice patterns and rationale with regard to debulking surgery for advanced epithelial ovarian carcinoma among South African Gynaecological oncologists. METHODS: A survey was distributed to all practicing gynecological oncologists in South Africa. It was structured to assess definitions of optimal debulking, procedures used to achieve optimal debulking, and reasons for not performing specific procedures. Respondents were also asked to report on experience and additional surgical training to improve skill in performing ultra-radical debulking surgery...
October 2016: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/27409239/ectopic-pregnancy-with-associated-gestational-choriocarcinoma-in-a-california-sea-lion-zalophus-californianus
#15
Vanessa A Fravel, Linda J Lowenstine, Amanda Koehne
A wild-born, captive-reared, 14 yr old, primiparous female California sea lion Zalophus californianus presented for anorexia of 14 d duration and abdominal distention. Routine complete blood cell count revealed leukocytosis with a neutrophilia, and serum chemistry revealed hypoalbumenemia and hyponatremia. Treatment with broad spectrum antibiotics and non-steroidal anti-inflammatories were started, but the animal continued to decline. Abdominal radiographs revealed a mature mineralized fetal skull and spine in the caudal abdomen and abdominal ultrasound revealed ascites but could not confirm the fetus...
July 7, 2016: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/27383568/outcome-and-learning-curve-in-159-consecutive-patients-undergoing-total-laparoscopic-hemihepatectomy
#16
Marcel J van der Poel, Marc G Besselink, Federica Cipriani, Thomas Armstrong, Arjun S Takhar, Susan van Dieren, John N Primrose, Neil W Pearce, Mohammad Abu Hilal
Importance: Widespread implementation of laparoscopic hemihepatectomy is currently limited by its technical difficulty, paucity of training opportunities, and perceived long and harmful learning curve. Studies confirming the possibility of a short and safe learning curve for laparoscopic hemihepatectomy could potentially benefit the further implementation of the technique. Objective: To evaluate the extent and safety of the learning curve for laparoscopic hemihepatectomy...
July 6, 2016: JAMA Surgery
https://www.readbyqxmd.com/read/27261244/creating-an-animation-enhanced-video-library-of-hepato-pancreato-biliary-and-transplantation-surgical-procedures
#17
Albert Fung, Paul Kelly, Gordon Tait, Paul D Greig, Ian D McGilvray
The potential for integrating real-time surgical video and state-of-the art animation techniques has not been widely applied to surgical education. This paper describes the use of new technology for creating videos of liver, pancreas and transplant surgery, annotating them with 3D animations, resulting in a freely-accessible online resource: The Toronto Video Atlas of Liver, Pancreas and Transplant Surgery ( http://tvasurg.ca ). The atlas complements the teaching provided to trainees in the operating room, and the techniques described in this study can be readily adapted by other surgical training programmes...
January 2016: Journal of Visual Communication in Medicine
https://www.readbyqxmd.com/read/27193943/feasibility-of-exercise-training-in-cancer-patients-scheduled-for-elective-gastrointestinal-surgery
#18
Karin Valkenet, Jaap C A Trappenburg, Carlo C Schippers, Lisa Wanders, Lidwien Lemmens, Frank J G Backx, Richard van Hillegersberg
BACKGROUND/AIMS: This study examines the feasibility of a preoperative exercise program to improve the physical fitness of a patient before gastrointestinal surgery. METHODS: An outpatient exercise program was developed to increase preoperative aerobic capacity, peripheral muscle endurance and respiratory muscle function in patients with pancreatic, liver, intestinal, gastric or esophageal cancer. During a consult at the outpatient clinic, patients were invited to participate in the exercise program when their surgery was not scheduled within 2 weeks...
2016: Digestive Surgery
https://www.readbyqxmd.com/read/27102324/career-intentions-of-female-surgeons-in-german-liver-transplant-centers-considering-family-and-lifestyle-priorities
#19
Sonia Radunz, Dieter P Hoyer, Gernot M Kaiser, Andreas Paul, Maren Schulze
PURPOSE: Women represent up to 60 % of students entering the medical profession in many countries in the world. However, the proportion of women to men is not accordingly balanced among surgical residents and especially in leadership positions in surgery. Therefore, we investigated the career goals as well as family and lifestyle priorities of female surgeons in German liver transplant centers. METHODS: A standardized questionnaire was developed using the web-based survey tool SurveyMonkey®...
April 21, 2016: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/27085850/3d-printing-to-simulate-laparoscopic-choledochal-surgery
#20
Oliver C Burdall, Erica Makin, Mark Davenport, Niyi Ade-Ajayi
AIMS OF THE STUDY: Laparoscopic simulation has transformed skills acquisition for many procedures. However, realistic nonbiological simulators for complex reconstructive surgery are rare. Life-like tactile feedback is particularly difficult to reproduce. Technological innovations may contribute novel solutions to these shortages. We describe a hybrid model, harnessing 3D technology to simulate laparoscopic choledochal surgery for the first time. METHODS: Digital hepatic anatomy images and standard laparoscopic trainer dimensions were employed to create an entry level laparoscopic choledochal surgery model...
May 2016: Journal of Pediatric Surgery
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