علی حسین زاده
[ 1 ] - بررسی صحت محاسبات توزیع دز فوتون در پرتودرمانی مزوتلیومای بدخیم پلور به روش ترکیب فوتون-الکترون با استفاده از شبیه سازی مونته کارلو
زمینه و هدف: در درمان مزوتلیومای بدخیم پلور در غیاب روش IMRT، درمان با پرتو فوتون و حفاظ ریه و سپس با پرتو الکترون انجام می‌گیرد. توزیع دز در درمان با فوتون تحت تاثیر بافت ناهمگن،عدم تعادل الکترونی در مرزها، وجود حفاظ در میان میدان و باریک بودن میدان می‌باشد. هدف از این پژوهش محاسبه توزیع دز در پرتودرمانی مزوتلیوما با پرتو فوتون و حفاظ جزیره‌ای ریه به روش شبیه‌سازی مونته‌کارلو و بررسی صحت محاسب...
[ 2 ] - Monte Carlo Simulation for Treatment Planning Optimization of the COMS and USC Eye Plaques Using the MCNP4C Code
Introduction: Ophthalmic plaque radiotherapy using I-125 radioactive seeds in removable episcleral plaques is often used in management of ophthalmic tumors. Radioactive seeds are fixed in a gold bowl-shaped plaque and the plaque is sutured to the scleral surface corresponding to the base of the intraocular tumor. This treatment allows for a localized radiation dose delivery to the tumor with a ...
[ 3 ] - Beam characteristics and leakage assessment of an in-house intra-operative electron applicator system
Background: Intraoperative radiation therapy (IORT) technique is used to treat a surgically exposed tumor or tumor bed in the treatment of locally advanced intraabdominal, retroperitoneal, pelvic, thoracic, breast and soft tissue tumors. One way to perform IORT is to use an existing linac and modify the treatment head using an applicator system. In this study the objectives were to design, and ...
[ 4 ] - Design of a generally applicable abdominal shield for reducing fetal dose during radiotherapy of common malignancies in pregnant patients
Background: In most cancer cases, the treatment choice for a pregnant patient is radiotherapy. In these patients, the abdomen is usually not exposed therefore fetus exposure is due to peripheral dose (PD). The purpose of this study was to estimate the fetal dose (the maximum PD in each pregnancy stage) for modalities available and to fabricate and evaluate a generally applicable fetal ...
[ 5 ] - Impact of Prolonged Fraction Delivery Time Modelling Stereotactic Body Radiation Therapy with High Dose Hypofractionation on the Killing of Cultured ACHN Renal Cell Carcinoma Cell Line
Introduction: Stereotactic body radiotherapy delivers hypofractionated irradiation with high dose per fraction through complex treatment techniques. The increased complexity leads to longer dose delivery times for each fraction. The purpose of this study is to investigate the impact of prolonged fraction delivery time with high-dose hypofractionation on the killing of cultured ACHN cells.Method...
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