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Virtual colonoscopy

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https://www.readbyqxmd.com/read/29134964/a-randomized-trial-comparing-high-definition-colonoscopy-alone-with-high-definition-dye-spraying-and-electronic-virtual-chromoendoscopy-for-detection-of-colonic-neoplastic-lesions-during-ibd-surveillance-colonoscopy
#1
Marietta Iacucci, Gilaad G Kaplan, Remo Panaccione, Oluseyi Akinola, Brendan Cord Lethebe, Mark Lowerison, Yvette Leung, Kerri L Novak, Cynthia H Seow, Stefan Urbanski, Parham Minoo, Xianyong Gui, Subrata Ghosh
OBJECTIVES: Dye spraying chromoendoscopy (DCE) is recommended for the detection of colonic neoplastic lesions in inflammatory bowel disease (IBD). The majority of neoplastic lesions are visible endoscopically and therefore targeted biopsies are appropriate for surveillance colonoscopy. To compare three different techniques for surveillance colonoscopy to detect colonic neoplastic lesions in IBD patients: high definition (HD), (DCE), or virtual chromoendoscopy (VCE) using iSCAN image enhanced colonoscopy...
November 14, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28932721/clinical-significance-of-preoperative-virtual-colonoscopy-for-evaluation-of-the-proximal-colon-in-patient-with-obstructive-colorectal-cancer
#2
Jae-Hyuk Heo, Chun-Geun Ryu, Eun-Joo Jung, Jin-Hee Paik, Dae-Yong Hwang
PURPOSE: Virtual colonoscopy is the most recently developed tool for detecting colorectal cancers and polyps, but its effectiveness is limited. In our study, we compared the result of preoperative virtual colonoscopy to result of preoperative and postoperative colonoscopy. We evaluated also the accuracy of preoperative virtual colonoscopy in patients who had obstructive colorectal cancer that did not allow passage of a colonoscope. METHODS: A total of 164 patients who had undergone preoperative virtual colonoscopy and curative surgery after the diagnosis of a colorectal adenocarcinoma between November 2008 and August 2013 were pooled...
August 2017: Annals of Coloproctology
https://www.readbyqxmd.com/read/28927657/endoscopic-training-a-nationwide-survey-of-french-fellows-in-gastroenterology
#3
Aurélien Amiot, Guillaume Conroy, Yann Le Baleur, Jérôme Winkler, Maxime Palazzo, Xavier Treton
BACKGROUND: During their 4 years of training, French fellows in gastroenterology should acquire theoretical and practical competency in gastrointestinal (GI) endoscopy. AIMS: To evaluate the delivery of endoscopy training to French GI fellows and perception of learning. METHODS: A nationwide electronic survey was carried out of French GI fellows using an anonymous, 17-item electronic questionnaire. RESULTS: A total of 291 out of 484 (60%) GI fellows responded to the survey...
September 15, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28830380/primary-care-physician-referral-patterns-in-ontario-canada-a-descriptive-analysis-of-self-reported-referral-data
#4
Clare Liddy, Sadaf Arbab-Tafti, Isabella Moroz, Erin Keely
BACKGROUND: In many countries, the referral-consultation process faces a number of challenges from inefficiencies and rising demand, resulting in excessive wait times for many specialties. We collected referral data from a sample of family doctors across the province of Ontario, Canada as part of a larger program of research. The purpose of this study is to describe referral patterns from primary care to specialist and allied health services from the primary care perspective. METHODS: We conducted a prospective study of patient referral data submitted by primary care providers (PCP) from 20 clinics across Ontario between June 2014 and January 2016...
August 22, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28812161/a-proficiency-based-virtual-reality-endoscopy-curriculum-improves-performance-on-the-fundamentals-of-endoscopic-surgery-examination
#5
Daniel A Hashimoto, Emil Petrusa, Roy Phitayakorn, Christina Valle, Brenna Casey, Denise Gee
INTRODUCTION: The fundamentals of endoscopic surgery (FES) examination is a national test of knowledge and skill in flexible gastrointestinal endoscopy. The skill portion of the examination involves five tasks that assesses the following skills: scope navigation, loop reduction, mucosal inspection, retroflexion, and targeting. This project aimed to assess the efficacy of a proficiency-based virtual reality (VR) curriculum in preparing residents for the FES skills exam. METHODS: Experienced (>100 career colonoscopies) and inexperienced endoscopists (<50 career colonoscopies) were recruited to participate...
August 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28701200/assessing-colonoscopic-inspection-skill-using-a-virtual-withdrawal-simulation-a-preliminary-validation-of-performance-metrics
#6
Christine M Zupanc, Guy M Wallis, Andrew Hill, Robin Burgess-Limerick, Stephan Riek, Annaliese M Plooy, Mark S Horswill, Marcus O Watson, Hans de Visser, David Conlan, David G Hewett
BACKGROUND: The effectiveness of colonoscopy for diagnosing and preventing colon cancer is largely dependent on the ability of endoscopists to fully inspect the colonic mucosa, which they achieve primarily through skilled manipulation of the colonoscope during withdrawal. Performance assessment during live procedures is problematic. However, a virtual withdrawal simulation can help identify and parameterise actions linked to successful inspection, and offer standardised assessments for trainees...
July 12, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28698230/chromoendoscopy-versus-narrow-band-imaging-in-uc-a-prospective-randomised-controlled-trial
#7
Raf Bisschops, Talat Bessissow, Joseph A Joseph, Filip Baert, Marc Ferrante, Vera Ballet, Hilde Willekens, Ingrid Demedts, Karel Geboes, Gert De Hertogh, Séverine Vermeire, Paul Rutgeerts, Gert Van Assche
BACKGROUND: Patients with long-standing UC have an increased risk for the development of colonic neoplastic lesions. Chromoendoscopy (CE) has been proven to enhance neoplasia detection while the role of virtual chromoendoscopy (VC) is still to be defined. OBJECTIVE: To compare the performance of CE to VC for the detection of neoplastic lesions in patients with long-standing UC. DESIGN: A multicentre prospective randomised controlled trial...
July 11, 2017: Gut
https://www.readbyqxmd.com/read/28638234/ischemic-or-toxic-injury-a-challenging-diagnosis-and-treatment-of-drug-induced-stenosis-of-the-sigmoid-colon
#8
Zong-Ming Zhang, Xiang-Chun Lin, Li Ma, An-Qin Jin, Fang-Cai Lin, Zhuo Liu, Li-Min Liu, Chong Zhang, Na Zhang, Li-Juan Huo, Xue-Liang Jiang, Feng Kang, Hong-Jun Qin, Qiu-Yang Li, Hong-Wei Yu, Hai Deng, Ming-Wen Zhu, Zi-Xu Liu, Bai-Jiang Wan, Hai-Yan Yang, Jia-Hong Liao, Xu Luo, You-Wei Li, Wen-Ping Wei, Meng-Meng Song, Yue Zhao, Xue-Ying Shi, Zhao-Hui Lu
A 48-year-old woman was admitted with 15-mo history of abdominal pain, diarrhea and hematochezia, and 5-mo history of defecation difficulty. She had been successively admitted to nine hospitals, with an initial diagnosis of inflammatory bowel disease with stenotic sigmoid colon. Findings from computed tomography virtual colonoscopy, radiography with meglumine diatrizoate, endoscopic balloon dilatation, metallic stent implantation and later overall colonoscopy, coupled with the newfound knowledge of compound Qingdai pill-taking, led to a subsequent diagnosis of ischemic or toxic bowel disease with sigmoid colon stenosis...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28522790/the-influence-of-rifaximin-on-diverticulitis-rate-and-quality-of-life-in-patients-with-diverticulosis
#9
Tomasz Banasiewicz, Wojciech Francuzik, Adam Bobkiewicz, Łukasz Krokowicz, Maciej Borejsza-Wysocki, Jacek Paszkowski, Adam Studniarek, Piotr Krokowicz, Marcin Grochowalski, Marek Szczepkowski, Zbigniew Lorenc
Diverticulosis, its associated symptoms and complications are one of the most common pathologies of the gastrointestinal tract in more economically developed countries. Presence of diverticuli and their clinical consequences can be divided into four categories: 1) diverticulosis, i.e. an asymptomatic presence of diverticuli that are usually found by accident 2) symptomatic uncomplicated diverticulosis 3) diverticulitis (acute uncomplicated diverticulitis) 4) complications of diverticulitis (conditions requiring hospital stay)...
February 28, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28449836/aortic-calcification-progression-in-heterozygote-familial-hypercholesterolemia
#10
Manal Al Kindi, Alexandre M Bélanger, Karl Sayegh, Soumia Senouci, Sumayah Aljenedil, Lojan Sivakumaran, Isabelle Ruel, Khalid Al Rasadi, Khalid Al Waili, Zuhier Awan, David Valenti, Jacques Genest
BACKGROUND: Patients with homozygous and heterozygous familial hypercholesterolemia (HeFH) develop severe aortic calcifications in an age- and gene dosage-dependent manner. The purpose of this study was to determine the rate of progression of aortic calcification in patients with HeFH. METHODS: We performed thoracoabdominal computed tomography scans and quantified aortic calcium (AoCa) score in 16 HeFH patients, all with the null low-density lipoprotein (LDL) receptor DEL15Kb mutation...
May 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28379020/-contribution-of-ct-colonography-to-clinical-practice
#11
Lukáš Lambert, Lucie Šimáková
CT colonography is a CT examination focused on the detection of colonic polyps and masses. Its most common indications include incomplete optical colonoscopy and generally personal preference in symptomatic or frail patients. CT colonography has a diagnostic yield similar to optical colonoscopy. It is less demanding for the patient, has shorter examination times, lower rates of adverse effects (including bowel perforation) and allows limited evaluation of extracolonic structures. In 10-15 % of asymptomatic patients, optical colonoscopy is needed if either a colonic polyp or mass is detected...
December 0: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28315280/beyond-white-light-optical-enhancement-in-conjunction-with-magnification-colonoscopy-for-the-assessment-of-mucosal-healing-in-ulcerative-colitis
#12
Marietta Iacucci, Ralf Kiesslich, Xianyong Gui, Remo Panaccione, Joan Heatherington, Oluseyi Akinola, Subrata Ghosh
Background and study aim The I-SCAN optical enhancement (OE) system with magnification is a recently introduced combination of optical and digital electronic virtual chromoendoscopy, which enhances mucosal and vascular details. The aim of this pilot study was to investigate the use of I-SCAN OE in the assessment of inflammatory changes in ulcerative colitis (UC). Patients and methods A total of 41 consecutive patients with UC and 9 control patients were examined by I-SCAN OE (Pentax Medical, Tokyo, Japan)...
March 17, 2017: Endoscopy
https://www.readbyqxmd.com/read/28293023/advances-in-image-enhancement-in-colonoscopy-for-detection-of-adenomas
#13
REVIEW
Takahisa Matsuda, Akiko Ono, Masau Sekiguchi, Takahiro Fujii, Yutaka Saito
High-quality colonoscopy is mandatory to prevent adenoma recurrence and colorectal cancer. In the past few years, technical advances have been developed with the purpose of improving adenoma detection rate (ADR), one of the most important validated colonoscopy quality benchmarks. Several techniques or devices are used to optimize visualization: observation techniques; add-on devices; auxiliary imaging devices; colonoscopes with increased field of view; and colonoscopes with an integrated inflatable reusable balloon...
May 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28113800/computer-aided-classification-of-gastrointestinal-lesions-in-regular-colonoscopy
#14
Pablo Mesejo, Daniel Pizarro, Armand Abergel, Olivier Rouquette, Sylvain Beorchia, Laurent Poincloux, Adrien Bartoli
We have developed a technique to study how good computers can be at diagnosing gastrointestinal lesions from regular (white light and narrow banded) colonoscopic videos compared to two levels of clinical knowledge (expert and beginner). Our technique includes a novel tissue classification approach which may save clinician's time by avoiding chromoendoscopy, a time-consuming staining procedure using indigo carmine. Our technique also discriminates the severity of individual lesions in patients with many polyps, so that the gastroenterologist can directly focus on those requiring polypectomy...
March 29, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28005009/computer-aided-classification-of-gastrointestinal-lesions-in-regular-colonoscopy
#15
Pablo Mesejo, Daniel Pizarro, Armand Abergel, Olivier Rouquette, Sylvain Beorchia, Laurent Poincloux, Adrien Bartoli
We have developed a technique to study how good computers can be at diagnosing gastrointestinal lesions from regular (white light and narrow banded) colonoscopic videos compared to two levels of clinical knowledge (expert and beginner). Our technique includes a novel tissue classification approach which may save clinician's time by avoiding chromoendoscopy, a time-consuming staining procedure using indigo carmine. Our technique also discriminates the severity of individual lesions in patients with many polyps, so that the gastroenterologist can directly focus on those requiring polypectomy...
September 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27920705/heterotopic-ossification-in-rectal-carcinoma-report-of-a-case-and-review-of-the-literature
#16
Jiro Shimazaki, Akira Takemura, Kiyotaka Nishida, Hideki Kajiyama, Mitsugi Shimoda, Shuji Suzuki
Heterotopic ossification in colorectal carcinoma is extremely rare. This report presents the case of a 57-year-old male who had undergone a low anterior resection following a diagnosis of rectal carcinoma. Histological examination showed heterotopic ossification in the tumor. The patient was referred to Ibaraki Medical Center, Tokyo Medical University, with a diagnosis of rectal carcinoma by a local physician. Abdominal computed tomography revealed thickening of the rectal wall with calcified deposits, and virtual colonoscopy showed stenosis with a mass in the rectum...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/27875189/corresponding-supine-and-prone-colon-visualization-using-eigenfunction-analysis-and-fold-modeling
#17
Saad Nadeem, Joseph Marino, Xianfeng Gu, Arie Kaufman
We present a method for registration and visualization of corresponding supine and prone virtual colonoscopy scans based on eigenfunction analysis and fold modeling. In virtual colonoscopy, CT scans are acquired with the patient in two positions, and their registration is desirable so that physicians can corroborate findings between scans. Our algorithm performs this registration efficiently through the use of Fiedler vector representation (the second eigenfunction of the Laplace-Beltrami operator). This representation is employed to first perform global registration of the two colon positions...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27854032/haustral-loop-extraction-for-ct-colonography-using-geodesics
#18
Yongkai Liu, Chaijie Duan, Jerome Liang, Jing Hu, Hongbing Lu, Mingyue Luo
PURPOSE: The human colon has complex geometric structures because of its haustral folds, which are thin flat protrusions on the colon wall. The haustral loop is the curve (approximately triangular in shape) that encircles the highly convex region of the haustral fold, and is regarded as the natural landmark of the colon, intersecting the longitude of the colon in the middle. Haustral loop extraction can assist in reducing the structural complexity of the colon, and the loops can also serve as anatomic markers for computed tomographic colonography (CTC)...
March 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27717235/exogenous-lipoid-pneumonia-induced-by-nasal-decongestant
#19
Giorgia A Osman, Alberto Ricci, Fabrizio Terzo, Carlo Falasca, Maria R Giovagnoli, Pierdonato Bruno, Andrea Vecchione, Salvatore Raffa, Sabatino Valente, Maria R Torrisi, Chiara De Dominicis, Simonetta Giovagnoli, Salvatore Mariotta
INTRODUCTION: Lipoid pneumonia is a clinical condition that may be initially asymptomatic or confused with an infectious or malignant lung disease. OBJECTIVES: We report four cases of this pathological condition. METHODS: The first case concerned an 85-year old woman with bilateral confluent pulmonary opacities, ground-glass type. Diagnosis was based on the cytology of the bronchoalveolar lavage (BAL) fluid followed by its ultrastructural examination...
September 22, 2016: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/27678946/the-use-of-modified-virtual-colonoscopy-to-structure-a-staging-and-treatment-model-for-rectogenital-multifocal-and-disseminated-endometriosis
#20
J Van Der Wat
No abstract text is available yet for this article.
November 2015: Journal of Minimally Invasive Gynecology
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