A study of positioning orientation effect on segmentation accuracy using convolutional neural networks for rectal cancer.

CONCLUSIONS: Orientation affects the accuracy for CTV and bladder, but has negligible effect on the femurs. The model trained from data combining both orientations performs as well as a model trained with data from the same orientation for all the organs. These observations can offer guidance on the choice of training data for accurate segmentation. PMID: 30418701 [PubMed - as supplied by publisher]
Source: Journal of Applied Clinical Medical Physics - Category: Physics Authors: Tags: J Appl Clin Med Phys Source Type: research

Related Links:

ConclusionsWe present the rare case of a patient with surgically resected locally advanced rectal cancer who demonstrated an impressive pCR with preoperative chemotherapy, which included FOLFOX plus bevacizumab.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Conclusion: An obesity paradox with a protective effect of CT-quantified adipose tissue was confirmed for anastomotic leakage and overall SC. In contrast, high adipose tissue was associated with higher risk for other SC and MC. These results show a more complex influence of body composition on MC and SC. CT-quantified obesity is able to provide deeper insights to explain the obesity paradox beyond BMI.Obes Facts 2019;12:259 –271
Source: Obesity Facts - Category: Eating Disorders & Weight Management Source Type: research
In this study, we reviewed major human studies on the health risks of radiation exposure and showed that sex-related factors may potentially influence the long-term response to radiation exposure. Available data suggest that long-term radiosensitivity in women is higher than that in men who receive a comparable dose of radiation. The report on the biological effects of ionizing radiation (BEIR VII) published in 2006 by the National Academy of Sciences, United States emphasized that women may be at significantly greater risk of suffering and dying from radiation-induced cancer than men exposed to the same dose of radiation....
Source: Frontiers in Genetics - Category: Genetics & Stem Cells Source Type: research
Neo-adjuvant chemoradiotherapy (NACRT) followed by total mesorectal excision (TME) is the accepted standard of care for locally advanced rectal cancer (LARC) due to conclusive evidence of superior clinical outcome [1 –5]. However, TME is a highly invasive procedure leading to bowel and bladder complications, and its added value for “good responders” is currently being debated [6,7].
Source: Physica Medica: European Journal of Medical Physics - Category: General Medicine Authors: Tags: Original paper Source Type: research
Yikan Cheng1†, Yan Ma1†, Jian Zheng1†, Hua Deng2†, Xueqin Wang3,4, Yewei Li3,4, Xiaolin Pang1, Haiyang Chen1, Fang He1, Lei Wang5*, Jianping Wang5* and Xiangbo Wan1* 1Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Department of Radiation Oncology, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China 2Department of Radiation Oncology, Banner-University Medical Center Phoenix, Phoenix, AZ, United States 3Department of Statistical Science, Southern China Center for Statistical Science, School of Mathe...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
CONCLUSION: Fluoroscopic guided percutaneous ureteral stents placement is a safe, efficient procedure and has a high success rate in patients with malignant ureteral obstruction. PMID: 30909269 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
Conclusions: As a result of following internal rectal movement through sequential simulation CT, the rectum above the pubis symphysis needs a larger margin, and bladder volume and bowel gas should be closely observed.
Source: Journal of Cancer Research and Therapeutics - Category: Cancer & Oncology Authors: Source Type: research
This study aims to determine the optimal time for removal of the urinary catheter after laparoscopic anterior resection of the rectum.Methods/designA total of 220 participants meeting the inclusion criteria will be randomly assigned to an experimental group or a control group. The experimental group will have their urethral catheters removed on postoperative day 2 and the control group will have their urethral catheters removed on postoperative day 7. In both groups, catheter removal will be performed when the bladder is full. The incidence of urinary retention and UTI in the two groups will be compared to determine the op...
Source: Trials - Category: Research Source Type: clinical trials
The standard of care for patients with locally advanced or distal rectal cancer is neoadjuvant chemoradiation therapy (CRT) followed by total mesorectal excision (TME). CRT leads to downsizing and downstaging of the tumour in most patients, it may increase the opportunity for sphincter-saving surgery and CRT decreases the risk for local recurrence [1]. However, treatment with neoadjuvant CRT and TME can adversely affect bladder, sexual, and anorectal function in the long term [2]. In patients who achieve a complete response to neoadjuvant CRT, a watch-and-wait policy can be considered to avoid the related morbidity and mor...
Source: Radiotherapy and Oncology - Category: Radiology Authors: Tags: Original Article Source Type: research
Dean Walter, 41, a rectal cancer sufferer, had a full pelvic extraction in which his bladder, prostate, rectum and lower colon were removed through a cut in his abdomen only 2in wide.
Source: the Mail online | Health - Category: Consumer Health News Source Type: news
More News: Bladder Cancer | Cancer | Cancer & Oncology | Physics | Rectal Cancers | Study | Training | Universities & Medical Training