Background: In intracavitary brachytherapy for gynecological cancers, various techniques are used to locate the anterior rectal wall nearest to the sources but there is no consensus on the best method to do so. This study aimed to compare a technique used rou nely in some centers that employs a wire marker to locate the posi on of the maximum rectal dose point, versus the method recommended by ...

Purpose: To disclose effectiveness of substitution of conformal radiotherapy (CRT) with intensity-modulated radiotherapy (IMRT) in combined with 125I permanent seed brachytherapy(BT) in reducing a rectal dose-volume parameter recently proven to be correlated with late rectal bleeding after the combined radiotherapy. Materials/Methods: A CT image set obtained a month after BT was used for CRT an...

BACKGROUND AND PURPOSE For the first time, delivered dose to the rectum has been calculated and accumulated throughout the course of prostate radiotherapy using megavoltage computed tomography (MVCT) image guidance scans. Dosimetric parameters were linked with toxicity to test the hypothesis that delivered dose is a stronger predictor of toxicity than planned dose. MATERIAL AND METHODS Dose-s...

Rectal acetylsalicylic acid was given to 14 children who had undergone open heart surgery. The effect on their temperatures was similar whether 15--30 or 30--50 mg/kg was given. Either dose was more effective than no treatment. The greatest fall in temperature occurred after 4 or 5 hours. Rectal aspirin in a triglyceride base is effective in lowering postoperative temperature. It should also be...

results twelve original studies fulfilled the inclusion criteria. the current literature suggests that the learning curve of robotic rectal surgery varies between 15 and 44 cases and is probably shorter to that of laparoscopic rectal surgery. conclusions there are only a few studies assessing the learning curve of robotic rectal surgery and they possess several differences in methodology and ou...

Local recurrence rates have markedly decreased in recent years as a result of changes in the surgical approach, such as a total mesorectal excision, as well as, neoadjuvant therapy for, the treatment of patients with colorectal cancer. For the treatment of patients with recurrent rectal cancer, a curative surgical resection of the local recurrence is considered the most important factor affecti...

Rectal absorption of methylprednisolone acetate and oral absorption of methylprednisolone and methylprednisolone acetate were investigated in a single-dose 3-way crossover study of 12 normal male volunteers. The median value of bioavailability (relative to oral dose) of methylprednisolone acetate based on unchanged methylprednisolone plasma levels was 14.2% after rectal administration, suggesti...

This study investigates the dosimetry and radiobiological model variation when a second photon arc was added to prostate volumetric-modulated arc therapy (VMAT) using the single-arc technique. Dosimetry and radiobiological model comparison between the single-arc and double-arc prostate VMAT plans were performed on five patients with prostate volumes ranging from 29-68.1 cm3. The prescription do...

The purpose is to compare CT-based dosimetry with International Commission on Radiation Units and Measurements (ICRU 38) bladder and rectum reference points in patients of carcinoma of uterine cervix treated with intracavitary brachytherapy (ICA). Twenty-two consecutive patients were evaluated. Orthogonal radiographs and CT images were acquired and transferred to PLATO planning system. Bladder ...

We investigated the rectal dose-sparing effect and tumor control of a point A dose-reduced plan in patients with Stage I-II cervical cancer (≤4 cm) arising from a small-sized uterus. Between October 2008 and August 2011, 19 patients with Stage I-II cervical cancer (≤4 cm) were treated with external beam radiotherapy (EBRT) for the pelvis and CT-guided brachytherapy. Seven patients were treated ...