Background: The aim of this study was to develop and implement a Monte Carlo framework for evaluation of patient specific out-of-field organ equivalent dose (OED). Materials and Methods: Dose calculations were performed using a Monte Carlo-based model of Oncor linac and tomographic phantoms. Monte Carlo simulations were performed using EGSnrc user codes. Dose measurements were performed using r...

background : limited studies are available on the calculation of radiation exposure and its associated risks for people in contact with patients who have been treated with permanent prostate brachytherapy. in this study the changes in the radiation exposure were calculated in different stages of the bladder fullness in prostate seed brachytherapy. methods :magnetic resonance images of three pat...

nowadays, radiography is a necessary procedure in diagnosis and treatment of patients with dental problems. according to the alara (as low as reasonably achievable) principle, dentists must take radiographs of sufficient quality at the lowest possible radiation dose to the patients. the assessment of patient dose on panoramic radiography is difficult because of dynamic nature of the imaging pro...

Background: X-ray computed tomography (CT) examinations deliver a significant amount of radiation doses to patients comparing to conventional radiography examinations. The objective of the current study was to analyze and investigate the average patient received dose from axial and spiral CT exams in a medical imaging center. Material and Methods: In this study, the patient imaging tec...

undesired radiation exposure to caregivers is an important problem in radioiodine therapy in thyroid carcinoma patients, especially when patient is non-ambulatory. special precautions are needed to keep the exposure to caregivers low when higher dose of radioiodine is necessary. here we present a case-report of a 74-year old male patient with papillary thyroid carcinoma with local invasion and ...

paclitaxel is a highly effective anticancer agent. it is active against a broad range of cancers that are generally considered refractory to conventional chemotherapy. paclitaxel induces a peripheral neuropathy (pn) that is characterized by sensory symptoms such as numbness and paresthesia in a glove and stocking distribution. pn may be severe and dose limiting at initial doses above 275 mg/m2....