Background: Based on the radiation biology model of prostate cancer, hypofractionated radiotherapy can improve the treatment outcomes without increasing toxicity. Although hypofractionated radiotherapy is implemented over a short period of time, it is more convenient and cheaper compared with conventional fractionated treatment. The aim of this study was to investigate the early toxicity of mod...

Online magnetic resonance-guided radiotherapy (oMRgRT) represents one of the most innovative applications current image-guided radiation therapy (IGRT). The revolutionary concept oMRgRT systems is ability to acquire MR images for adaptive treatment planning and also online imaging during delivery. daily strategies allow improve targeting accuracy while avoiding critical structures. This ESTRO-A...

BACKGROUND The purpose of this clinical study is to investigate the clinical feasibility and safety of a shuttle-based MR-linac connection to provide MR-guided radiotherapy. METHODS/DESIGN A total of 40 patients with an indication for a neoadjuvant, adjuvant or definitive radiation treatment will be recruited including tumors of the head and neck region, thorax, upper gastrointestinal tract a...

Volumetric imaging and planning for 3-D conformal RT and IMRT have pressured the oncology community to better understand the geometric uncertainties inherent in the RT delivery process, including set-up error (inter-fraction) as well as organ motion during treatment (intra-fraction). This has ushered in the development of emerging technologies and clinical processes collectively referred to as ...

Justification of clinical physics staffing levels is difficult due to the lack of direction as how to equate clinical needs with the staffing levels and competency required. When a physicist negotiates staffing requests to administration, she/he often refers to American College of Radiology staffing level suggestions, and resources such as the Abt studies. This approach is often met with questi...

American Association of Physicists in Medicine (AAPM) task group (TG) 142 has recently published a report to update recommendations of the AAPM TG 40 report and add new recommendations concerning medical accelerators in the era of image-guided radiation therapy (IGRT). The recommendations of AAPM TG 142 on IGRT are timely. In our institute, we established a comprehensive imaging QA program on a...

In the era of intensity-modulated radiation therapy, image-guided radiotherapy (IGRT) appears crucial to control dose delivery and to promote dose escalation while allowing healthy tissue sparing. The place of IGRT following radical prostatectomy is poorly described in the literature. This review aims to highlight some key points on the different IGRT techniques applicable to prostatic bed radi...