Multienergetic verification of dynamic wedge angles in medical accelerators using multichannel linear array

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Multienergetic verification of dynamic wedge angles in medical accelerators using multichannel linear array.

BACKGROUND The aim of the modern radiotherapy is to get a homogenous dose distribution in PTV, which is obtained by using for example physical or dynamic wedges. The using of a physical wedge has provided such isodose distributions but their use resulted in detrimental dosimetric consequences, for example beam hardening effects and practical consequences of filter handling or possible misalignm...

متن کامل

New Method of Quality Control Test for Light and Radiation Field Coincidence in Medical Linear Accelerators

Introduction: The evaluation of X-ray and light field coincidence in linear accelerators as a quality control test is often performed subjectively, involving the manual marking of films and their visual inspection following the irradiation. Therefore, the present study aimed to develop an objective method for the performance of this test leading to the increased levels...

متن کامل

automatic verification of authentication protocols using genetic programming

implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...

15 صفحه اول

Medical Applications of Electron Linear Accelerators

The role of radiation therapy in cancer management is first defined: today among the cancer patients who are cured (≅ 45 %) about one half are cured by radiation therapy applied alone or in combination with surgery or chemotherapy. The experience accumulated in decades shows that, to be efficient, the radiation treatment must be delivered with a high physical selectivity. At present, electron l...

متن کامل

Activation Pocesses in Medical Linear Accelerators Activation Processes in Medical Linear Accelerators and Spatial Distribution of Activation Products

Activation products have been identified by in situ gamma spectroscopy at the isocenter of a medical linear accelerators shortly after termination of a high energy photon beam irradiation with 15 x 15 cm field size. Spectra have been recorded either with open or with closed collimator. Whilst some activation products disappear from the spectrum with closed collimator or exhibit reduced count ra...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Reports of Practical Oncology & Radiotherapy

سال: 2013

ISSN: 1507-1367

DOI: 10.1016/j.rpor.2013.04.029