Read by QxMD icon Read

Virtual colonoscopy

Philip Roelandt, Ingrid Demedts, Hilde Willekens, Talat Bessissow, Lieve Braeye, Georges Coremans, Pieter-Jan Cuyle, Marc Ferrante, Anne-Marie Gevers, Martin Hiele, Maggy Osselaer, Jan Tack, Sabine Tejpar, Marijke Ulenaers, Gert Van Assche, Eric Van Cutsem, Stijn Van Gool, Jaarke Vannoote, Severine Vermeire, Raf Bisschops
BACKGROUND:  To improve detection of mucosal lesions during colonoscopy a number of imaging modalities have been suggested, including high definition and virtual chromoendoscopy. Given the theoretical advantage of these new imaging techniques, we aimed to investigate their use for the detection of polyps in patients referred for colonoscopy in a large tertiary hospital. METHODS:  Demographic, endoscopic, and histological data from 1855 consecutive patients undergoing colonoscopy were collected prospectively...
January 15, 2019: Endoscopy
Tahrin Mahmood, Michael Anthony Scaffidi, Rishad Khan, Samir Chandra Grover
Virtual reality simulation is becoming the standard when beginning endoscopic training. It offers various benefits including learning in a low-stakes environment, improvement of patient safety and optimization of valuable endoscopy time. This is a review of the evidence surrounding virtual reality simulation and its efficacy in teaching endoscopic techniques. There have been 21 randomized controlled trials (RCTs) that have investigated virtual reality simulation as a teaching tool in endoscopy. 10 RCTs studied virtual reality in colonoscopy, 3 in flexible sigmoidoscopy, 5 in esophagogastroduodenoscopy, and 3 in endoscopic retrograde cholangiopancreatography...
December 28, 2018: World Journal of Gastroenterology: WJG
Susanne J Blokzijl, Kirsten F Lamberts, Laurens A van der Waaij, Jacoba M Spikman
OBJECTIVE: This study explored the willingness of patients to start colonoscopy with virtual reality (VR) instead of procedural sedation and analgesia (PSA), as well as their motives and characteristics. There is a growing interest in colonoscopy without PSA. Offering VR as a distraction technique instead of PSA may increase the percentage of colonoscopies without PSA. PATIENTS AND METHODS: A survey with demographic, colonoscopy-related and psychology-related questions was completed by 326 adults referred for colonoscopy with PSA...
December 21, 2018: European Journal of Gastroenterology & Hepatology
Shraddha Gulati, Patrick Dubois, Ben Carter, Victoria Cornelius, Meredith Martyn, Andrew Emmanuel, Amyn Haji, Bu'Hussain Hayee
Background: Chromoendoscopy (CE) is the recommended surveillance technique for colitis, but uptake has been limited and the literature provides scant information on patient experience (PE); imperative to adherence to surveillance programmes. Virtual CE (VCE) by Fujinon Intelligent Colour Enhancement digitally reconstructs mucosal images in real time, without the technical challenges of CE. We performed a multifaceted randomized crossover trial (RCT) to evaluate study feasibility and obtain preliminary comparative procedural and PE data...
December 20, 2018: Inflammatory Bowel Diseases
Francesca Tamarozzi, Dora Buonfrate, Geraldo Badona Monteiro, Joachim Richter, Federico Giovanni Gobbi, Zeno Bisoffi
BACKGROUND: Infection with Schistosoma mansoni is a major cause of morbidity and mortality in endemic areas, and is increasingly diagnosed in migrants and travellers outside transmission areas. Markers for the assessment of morbidity and impact of control programs in endemic areas and for the clinical management of patients in the clinical setting are scant, especially for intestinal involvement. Ultrasonography is well established to evaluate hepatosplenic pathology; on the contrary, ultrasound evaluation of intestinal schistosomiasis is virtually unexplored...
2018: PloS One
Han Hee Lee, Bo-In Lee
From dye-assisted conventional chromoendoscopy to novel virtual chromoendoscopy, image-enhanced endoscopy (IEE) is continuously evolving to meet clinical needs and improve the quality of colonoscopy. Dye-assisted chromoendoscopy using indigo carmine or crystal violet, although slightly old-fashioned, is still useful to emphasize the pit patterns of the colonic mucosa and predict the histological structures of relevant lesions. Equipment-based virtual chromoendoscopy has the advantage of being relatively easy to use...
November 2018: Clinical Endoscopy
Takaaki Higashihara, Akira Okada, Yukiko Kishida, Sayako Maruno, Mimiko Matsumura, Koichi Tamura, Hideki Takano
BACKGROUND: Patients with end-stage kidney disease (ESKD) most commonly complain of gastrointestinal symptoms, such as diarrhea. Diarrhea negatively affects patient quality of life and has miscellaneous etiologies, such as Clostridium difficile-associated diarrhea (CDAD) and ischemic colitis. However, it is sometimes extremely difficult to determine the true etiology given the comorbidities and complications the patients have. A rare cause of diarrhea is ulcerative colitis (UC), which commonly affects the rectum and proximal colon in a continuous fashion...
November 1, 2018: BMC Nephrology
Amy L Cisyk, Zoann Nugent, Robert H Wightman, Harminder Singh, Kirk J McManus
There are a substantial portion of colorectal cancers (CRCs), termed interval CRCs (I-CRCs), that are diagnosed shortly after a negative colonoscopy (i.e., no detectable polyps or CRC) and before recommended follow-up screening. The underlying cause(s) accounting for I-CRCs remain poorly understood, but may involve aberrant biology that drives genome instability. Genetic defects inducing genome instability are pathogenic events that lead to the development and progression of traditional sporadic (Sp-) CRCs...
September 2018: Neoplasia: An International Journal for Oncology Research
Rishad Khan, Joanne Plahouras, Bradley C Johnston, Michael A Scaffidi, Samir C Grover, Catharine M Walsh
BACKGROUND: Endoscopy has traditionally been taught with novices practicing on real patients under the supervision of experienced endoscopists. Recently, the growing awareness of the need for patient safety has brought simulation training to the forefront. Simulation training can provide trainees with the chance to practice their skills in a learner-centred, risk-free environment. It is important to ensure that skills gained through simulation positively transfer to the clinical environment...
August 17, 2018: Cochrane Database of Systematic Reviews
Meghan G Lubner, Christine O Menias, Rashad J Johnson, Ayman H Gaballah, Akram Shaaban, Khaled M Elsayes
Villous lesions are advanced adenomas that manifest most commonly in the colon; however, they can develop throughout the gastrointestinal tract. The duodenum is the most common small-bowel site of these lesions. Although in most cases these are isolated lesions that occur sporadically, patients with certain specific colorectal cancer syndromes, including familial adenomatous polyposis and hereditary nonpolyposis colorectal cancer, may develop multiple advanced adenomas. Villous lesions are important because although they are histologically benign, they may harbor dysplasia and have potential for malignancy...
September 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Saad Nadeem, Xianfeng Gu, Arie E Kaufman
Visualization of medical organs and biological structures is a challenging task because of their complex geometry and the resultant occlusions. Global spherical and planar mapping techniques simplify the complex geometry and resolve the occlusions to aid in visualization. However, while resolving the occlusions these techniques do not preserve the geometric context, making them less suitable for mission-critical biomedical visualization tasks. In this paper, we present a shape-preserving local mapping technique for resolving occlusions locally while preserving the overall geometric context...
December 2018: IEEE Transactions on Visualization and Computer Graphics
Begoña Márquez Argente Del Castillo, José Ramón Olalla Muñoz
Pneumatosis intestinalis refers to lineal or cystic gas collections in the intestinal wall. Pneumatosis cystoides intestinalis (PCI) is a benign primary cause. This is a rare disease characterized by multiple gas cysts in the submucosa or subserosa, principally within the colon.
June 2018: Revista Española de Enfermedades Digestivas
Roberto García-Figueiras, Sandra Baleato-González, Anwar R Padhani, Antonio Luna-Alcalá, Ana Marhuenda, Joan C Vilanova, Iria Osorio-Vázquez, Anxo Martínez-de-Alegría, Antonio Gómez-Caamaño
Imaging techniques are clinical decision-making tools in the evaluation of patients with colorectal cancer (CRC). The aim of this article is to discuss the potential of recent advances in imaging for diagnosis, prognosis, therapy planning, and assessment of response to treatment of CRC. Recent developments and new clinical applications of conventional imaging techniques such as virtual colonoscopy, dual-energy spectral computed tomography, elastography, advanced computing techniques (including volumetric rendering techniques and machine learning), magnetic resonance (MR) imaging-based magnetization transfer, and new liver imaging techniques, which may offer additional clinical information in patients with CRC, are summarized...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Andrew Guinigundo
OBJECTIVE: To examine the viability of colon cancer screening with computed tomography colonography, also known as virtual colonoscopy. DATA SOURCES: Clinical guidelines, published medical research. CONCLUSION: Virtual colonoscopy, under the right circumstances, is an accurate viable screening tool for patients who may not otherwise desire to or are not able to participate in traditional colonoscopy. IMPLICATIONS FOR NURSING PRACTICE: Nurses should be aware that routine colon cancer screening is recommended starting at age 50...
May 2018: Seminars in Oncology Nursing
Manuela Cesaretti, Manuela Trotta, Irene Leale, Giuseppe Antonio Minetti, Giuseppe Cittadini, Fabrizio Montecucco, Giovanni Bruno Camerini, Giacomo Borgonovo
The mobile cecum syndrome includes a spectrum of conditions. The cecal volvulus represents the acute form, with typical feature of a bowel obstruction that needs immediate operative treatment. On the other hand, a chronic form of mobile cecum syndrome which is the most common form reported a history of intermittent crampy abdominal pain, distension, and constipation. In this study, five patients came to our attention during the last ten years, presenting different symptoms due to a mobile cecum. All patients were investigated by several diagnostic techniques according to the specific clinical setting...
2018: Case Reports in Gastrointestinal Medicine
Palak J Trivedi, Ralf Kiesslich, James Hodson, Neeraj Bhala, Ralph A Boulton, Rachel Cooney, Xianyong Gui, Tariq Iqbal, Ka-Kit Li, Saqib Mumtaz, Shri Pathmakanthan, Mohammed Nabil Quraishi, Vandana M Sagar, Ashit Shah, Naveen Sharma, Keith Siau, Samuel Smith, Stephen Ward, Monika M Widlak, Raf Bisschops, Subrata Ghosh, Marietta Iacucci
BACKGROUND AND AIMS: Electronic virtual chromoendoscopy (EVC) can demonstrate ongoing disease activity in ulcerative colitis (UC), even when Mayo subscores suggest healing. However, applicability of EVC technology outside the expert setting has yet to be determined. METHODS: Fifteen participants across 5 centers reviewed a computerized training module outlining high-definition and EVC (iScan) colonoscopy modes. Interobserver agreement was then tested (Mayo score, Ulcerative Colitis Endoscopic Index of Severity [UCEIS], and the Paddington International Virtual Chromoendoscopy Score [PICaSSO] for UC), using a colonoscopy video library (30 cases reviewed pretraining and 30 post-training)...
July 2018: Gastrointestinal Endoscopy
Andrea Cassinotti, Federico Buffoli, Paolo Fociani, Teresa Staiano, Vincenzo Villanacci, Manuela Nebuloni, Piergiorgio Duca, Maria Fichera, Roberto Grassia, Gianpiero Manes, Marianna Salemme, Paola Molteni, Gianluca Sampietro, Diego Foschi, Roberto de Franchis, Sandro Ardizzone
GOALS: The aim of this study was to analyze the performance of Fuji Intelligent Color Enhancement (FICE) using the classification of Kudo in the differentiation of neoplastic and non-neoplastic raised lesions in ulcerative colitis (UC). BACKGROUND: The Kudo classification of mucosal pit patterns is an aid for the differential diagnosis of colorectal polyps in the general population, but no systematic studies are available for all forms of raised lesions in UC. STUDY: All raised, polypoid and nonpolypoid, lesions found during consecutive surveillance colonoscopies with FICE for long-standing UC were included...
February 1, 2018: Journal of Clinical Gastroenterology
Claudia Mehedințu, Lăcrămioara Aurelia Brîndușe, Elvira Brătilă, Michele Monroc, Ebticem Lemercier, Olivier Suaud, Cecile Collet-Savoye, Horace Roman
STUDY OBJECTIVE: To evaluate whether combining computed tomography-based virtual colonoscopy (CTC) with magnetic resonance imaging (MRI) improves preoperative assessment of colorectal endometriosis. DESIGN: Retrospective study using prospectively recorded data (Canadian Task Force classification II-2). SETTING: University tertiary referral center. PATIENTS: Seventy-one women treated for colorectal endometriosis managed between June 2015 and May 2016...
September 2018: Journal of Minimally Invasive Gynecology
Tingxi Wen, David Medveczky, Jackie Wu, Jianhuang Wu
BACKGROUND: Colonoscopy plays an important role in the clinical screening and management of colorectal cancer. The traditional 'see one, do one, teach one' training style for such invasive procedure is resource intensive and ineffective. Given that colonoscopy is difficult, and time-consuming to master, the use of virtual reality simulators to train gastroenterologists in colonoscopy operations offers a promising alternative. METHODS: In this paper, a realistic and real-time interactive simulator for training colonoscopy procedure is presented, which can even include polypectomy simulation...
January 25, 2018: Biomedical Engineering Online
Victoria de Lara Bendahán, Marta Rivas Rivas, Maria Coral de la Vega Olías, Vicente Vega Ruiz
The present paper describes a case of ileocecal intussusception detected by ultrasound and confirmed by CT, including the imaging characteristics allowing its diagnosis. The patient was referred for colonoscopy, which could not be completed, to assess the cause of intussusception. Then it was decided to resort to Virtual colonoscopy, which allowed to identify and characterize a cecal neoplasm serving as a lead point for the intussusception.
March 2018: Revista Española de Enfermedades Digestivas
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"