The informative value of magnetic resonance imaging in the diagnosis of rectal tumor involvement against the background of combined treatment
Abstract
The aim of the study is to prove the informative value of magnetic resonance imaging in the diagnosis of rectal tumor involvement against the background of combined treatment for the patients (chemotherapy + radiation therapy) on the basis of the AI "Republican Oncological Dispensary", Cheboksary. All patients underwent magnetic resonance imaging on Elekta Synergy linear accelerator with a multi-leaf collimator, an integrated XVI X-ray volumetric imaging system and iViewGT portal imaging system, Mosaiq information and control system. Statistical processing was performed using standard methods of medical statistics using the SPSS Statistics package (version 17.0), arithmetic mean (M), standard deviation from the general mean age, mean value errors (m), Student's t-test were also calculated. Magnetic resonance imaging diagnostics made it possible to identify and dynamically control the change in the tumor involvement of the rectum against the background of the treatment: a change in the localization of the tumor in different parts of the rectum, a change in localization depending on the distance from the anal margin, a change in the thickness of the tumor wall, a change in the size and number of lymph nodes. Extramural venous invasion (EMVI), marginal resection boundary (CRM) of the tumor and invasion into surrounding tissues after surgical intervention were evaluated. This article examines the incidence of rectal cancer depending on age, gender, complaints, oncological…
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