نتایج جستجو برای: rectal wall dose
تعداد نتایج: 500873 فیلتر نتایج به سال:
PURPOSE To demonstrate the feasibility of transperineal polyethylene glycol (PEG) hydrogel insertion into anterior perirectal fat for reducing rectal radiation dose in patients with suboptimal rectal dosimetry after permanent iodine-125 prostate brachytherapy. METHODS AND MATERIALS Five patients with suboptimal rectal dosimetry after iodine-125 seed brachytherapy implant underwent a single tr...
This study aims to provide the means for testicular dose estimation from radiotherapy for rectal cancer. Rectal irradiation was simulated on a humanoid phantom using a 6 MV photon beam. The effect of field size, distance from irradiated area, wedge introduction into lateral beams, tissue thickness along the beam axis and use of gonad shields on the testicular dose was examined. Testicular dose ...
through the anal canal. Precisely how a complete rectal prolapse develops is not thoroughly understood. Possible etiologies include a defect of the pelvic floor, redundant rectosigmoid colon, deep Douglas pouch, gender (female), psychiatric problems and nulliparity. Pathogenesis may involve a sliding hernia or a circumferential intussusception. Treatment of rectal prolapse can involve a variety...
Rationale: Rectal diazepam (0.5 mg/kg-maximum single dose 20 mg) is our standard practice for terminating prolonged (seizure > 5 minutes and continuing) or acute repetitive seizures in children, both inpatient and at home. Recently, clinically significant respiratory depression, requiring mechanical support has been reported in 8.8% of children receiving rectal diazepam (Norris et al, Dev. Med....
introduction: study the protective effect of mucosal bcg vaccination with subcutaneous against leishmania major infection in susceptible balb/c mice material and methods: 6-8 weeks old male balb/c mice,were divided to two test groups and four control groups of 20 of mice and then vaccinated. two test groups vaccinated with appropriate dose of bcg through rectal and subcutaneous routs. they vacc...
Definitive radiation therapy is a well-recognised curative treatment option for localised prostate cancer. A suitable technique, dose, target volume, and the option of a combination with androgen deprivation therapy needs to be considered. An optimal standard external beam radiotherapy includes currently the intensitymodulated and image-guided radiotherapy techniques with total doses of ≥76-78 ...
The article presents a case of deep intestinal endometriosis in a 27-year-old woman who complained of dysmenorrhea and infertility. The diagnostic process included ultrasonography as well as colonoscopy, barium enema and CT imaging. Because of the presence of two distant changes which involved nearly the full thickness of the rectal wall and the major part of its circumference, the decision to ...
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