The sensitivity of MR colonography using dark lumen technique for detection of colonic lesions

Acay, Mehtap Beker; Bayramoğlu, Sibel; Acay, Akif

doi:10.5152/tjg.2014.4850

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…This finding is supposed by the work of Hoffman et al but Beker et al finding differs from us but his study was included all type of lesion. 16,17 We have observed that for all size polyp sensitivity, specificity, positive predictive value, negative predictive value and accuracy was between 85.71% to 94.34%.For size above 8 mm all these value was 100% for size below 4 mm to 8 mm sensitivity was less and specificity was 97.44%. For size below 4 mm sensitivity was 28.57% and specificity was 92.31% but all parameter was less.…”

Section: Discussionmentioning

confidence: 87%

A prospective comparative study of detection of colonic polyposis by magnetic resonance colonography versus conventional colonoscopy

Ramana¹,

Kumar²

2019

Int Surg J

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Background: Colorectal cancer mostly arises from adenomatous polyp and the transition time to convert into carcinoma is around ten years. As the progress to adenocarcinoma is a slow process so, early detection and endoscope resection is claimed to be effective in decreasing incidence and mortality by colorectal cancer. MR colonography is a non-invasive method for evaluating entire colon. It can detect precancerous lesion, cancer and staging. It is non-invasive tool for screening. Acceptability of the patient is better for MR colonography.Methods: Present study is a prospective comparative evaluation of magnetic resonance colonography verses colonoscopy conducted in the Department of Radiology, Konaseema Institute of Medical Science, and other establishments from August 2015 to January 2018. The sample size was calculated to be 112. Specificity, sensitivity and predictive value were calculated by medical statistical software.Results: For all size of tumours, sensitivity was 85.71%, specificity was 92.85%, positive predictive value was 92.30%, negative predictive value was 86.66% and accuracy was 94.34%. The positive predictive value was 90.00% negative predictive value was 92.68% and accuracy was 92.16%. For 1 mm to 4 mm size of polyp the sensitive was 28.57%, specificity was 92.31%, positive predictive value was 66.67%, negative predictive value was 70.59% and accuracy was 70%.Conclusions: In present study we have found that there was male predominance in patient and gastrointestinal bleeding was common clinical presentation. We have also observed that all size of poly MR colonography as having sensitivity and specificity around 90% but MR colonography is highly sensitive and specific for polyp size above 8mm but it is less sensitive for size below 4 mm.

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Section: Discussionmentioning

confidence: 87%

A prospective comparative study of detection of colonic polyposis by magnetic resonance colonography versus conventional colonoscopy

Ramana¹,

Kumar²

2019

Int Surg J

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“…МРТ ТК предусматривает заполнение кишки водой через введенный за связку Трейтца интестинальный зонд или per os. Используются методики «светлого просвета» (bright lumen), основанной на получении Т2-ВИ в быстрой импульсной последовательности, и «темного просвета» (dark lumen), основанной на получении Т1-ВИ с одновременным внутривенным введением контрастного вещества и динамическим контрастированием [17][18][19]. Ограничения МРТ в изучении ТК, помимо противопоказаний данного метода, опосредованы долгой «экспозицией» при получении среза и зависимости от перистальтики.…”

Section: оригинальные исследованияunclassified

Computer tomography in the diagnosis of small bowel diseases

Koshelev

Геннадьевич²,

Kitayev

et al. 2020

Journal of Clinical Practice

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Introduction. The relevance of the study is caused by the difficulties in diagnosing diseases of the small bowel (SB). Due to the prevalence and widespread introduction of X-ray computed tomography (CT) into clinical practice, its capabilities in the diagnosis of small bowel diseases are of great interest and potential. Objective. to reveal the possibilities of computed tomography using intravenous bolus contrast enhancement in identifying the symptom of wall thickening of the small bowel and its prognostic significance in various nosologies. Methods. Analysis of the data from MSCT studies performed according to the Protocol for the study of abdominal organs using intravenous bolus contrast enhancement and oral water intake in adult patients from 18 to 87 years of age with small bowel diseases. Results. The article shows the possibilities of multispiral computed tomography performed according to the standard Protocol in detecting thickening of the SB wall. The range of diseases was determined for which thickening of the SB wall was one of the main radiological symptoms of the lesion. The prognostic significance of this radiological symptom is presented. The features of thickening of the intestinal wall in various diseases and other distinctive features that can be used in the differential diagnosis are described. Conclusion. Thickening of the wall is a common sign of SB damage, which is convincingly detected in CT studies with bolus contrast enhancement. In our study, the common causes of thickening of the SB wall in primary disease were: Crohn's disease (37%), lymphoma (20%) and anastomosis (13%). However, we determined thickening of the SB wall as a result of primary tumors (adenocarcinoma, sarcoma) in 7% and as a result of a secondary tumor lesion in 18.6% of cases. The considered diseases were different in the degree of thickening of the intestinal wall (from 6 to 70 mm), its spreading (focal thickening 48%; segmental 52%), number of affected areas (from 1 to 3) of their localization (proximal-middle or distal section), form of the transition area from the affected part of the intestine to the unchanged one (sharply defined or smooth), the presence or absence of symptoms of intestinal obstruction, and the features of contrast enhancement (severity and type).

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Current Status of Magnetic Resonance Colonography for Screening and Diagnosis of Colorectal Cancer

Paardt

Stoker

2018

Radiologic Clinics of North America

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The sensitivity of MR colonography using dark lumen technique for detection of colonic lesions

Cited by 5 publications

References 38 publications

A prospective comparative study of detection of colonic polyposis by magnetic resonance colonography versus conventional colonoscopy

A prospective comparative study of detection of colonic polyposis by magnetic resonance colonography versus conventional colonoscopy

Computer tomography in the diagnosis of small bowel diseases

Current Status of Magnetic Resonance Colonography for Screening and Diagnosis of Colorectal Cancer

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