منابع مشابه
Proton-beam therapy for prostate cancer.
The treatment options for prostate cancer include prostatectomy, external-beam irradiation, brachytherapy, cryosurgery, focused ultrasound, hormonal therapy, watchful waiting, and various combinations of these modalities. Because the prostate abuts the bladder and rectum, the dose distributions of external-beam irradiations and the accuracy of their placement play crucial roles in the probabili...
متن کاملProton beam therapy for medulloblastoma.
It is heartening to read a report of good functional outcomes following proton beam therapy in young patients with medulloblastoma, including the absence of many unpleasant side eff ects that can occur after conventional photon therapy. The authors quote UK research, which criticises the current proton therapy treatment policy of dividing the x-ray (photon) equivalent dose by 1·1. This is done ...
متن کاملProton beam therapy for liver metastases from gastric cancer
Liver metastases from gastric cancer (LMGC) is a non-curable, fatal disease with a 5-year survival rate of <10%. Although various local treatments have been applied, their clinical utility has not been established. The purpose of this study was to investigate the safety and effectiveness of proton beam therapy (PBT) for the treatment of patients with LMGC. A total of nine patients (seven men, t...
متن کاملImproving Outcomes for Esophageal Cancer using Proton Beam Therapy.
Radiation therapy (RT) plays an essential role in the management of esophageal cancer. Because the esophagus is a centrally located thoracic structure there is a need to balance the delivery of appropriately high dose to the target while minimizing dose to nearby critical structures. Radiation dose received by these critical structures, especially the heart and lungs, may lead to clinically sig...
متن کاملProton beam therapy physics
Contrary to popular opinion, the concept of treating cancer using high energy beams of protons is not new. First conceived in 1946, following a period in which patients were treated only in laboratory facilities, the first hospital-based facility opened in 1990 at Loma Linda University Medical Center (United States). Currently there are 67 centres in operation, with a further 32 in the construc...
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ژورنال
عنوان ژورنال: Canadian Medical Association Journal
سال: 2019
ISSN: 0820-3946,1488-2329
DOI: 10.1503/cmaj.190008