نتایج جستجو برای: medical internal radiation dosimetry
تعداد نتایج: 1034690 فیلتر نتایج به سال:
With the development of science and technology in the medical field and need more than ever to accuracy and quality of treatment has been causer increase different radiotherapy methods. Almost the past two decade’s intraoperative radiation therapy (IORT) as one of the new techniques used to treat cancer patients. One of the problems with this method is obtaining accurate dosimetry, becaus...
Routine internal dose exposures are typically (in the UK nuclear industry) less than external dose exposures: however, the costs of internal dosimetry monitoring programmes can be significantly greater than those for external dosimetry. For this reason decisions on when to apply routine monitoring programmes, and the nature of these programmes, can be more critical than for external dosimetry p...
"Professor M. Saiful Huq is an esteemed Medical Physi-cist, Past-President of the American Association Physicists in Medicine (AAPM), Professor Radiation Oncology at University Pittsburgh School Medicine, Pittsburgh, Pen-nsylvania, USA and Director Physics Division for UPMC CancerCenter. Dr. responsible development scientific activities a large group physicists management clinical medical physi...
This report examines the dosimetry of ultraviolet (UV) radiation applied to dermatological treatments, and considers the definition of the radiation quantities and their measurement. Guidelines are offered for preferred measurement techniques and standard methods of dosimetry. The recommendations have been graded according to the American Joint Committee on Cancer classification of strength of ...
BACKGROUND In order to improve the efficiency of patient care, we developed an electronic medical record system, named the Comprehensive Radiation Oncology Management System (C-ROMS). C-ROMS was used together with a commercial record-and-verify system, LANTIS (Siemens Medical Systems Inc., Concord, CA, USA). The impact of the C-ROMS/LANTIS system on the staff workload in the Radiation Oncology ...
UNLABELLED Combined whole-body dual-tracer ((18)F-FDG and (11)C-acetate) PET/CT is increasingly used for staging hepatocellular carcinoma, with only limited studies investigating the radiation dosimetry data of these scans. The aim of the study was to characterize the radiation dosimetry of combined whole-body dual-tracer PET/CT protocols. METHODS Consecutive adult patients with hepatocellula...
Ionization radiation induced decomposition of dyes is a concept frequently exploited to develop devices to measure the radiation dose. In this study, using this concept, preparation of polyvinyl chloride films doped with different amounts of quinacrine dihydrochloride were done and their capabilities for dosimetry of gamma radiation doses in the range of 0 to 60 kGy were evaluated. The results ...
Nuclear techniques for direct assessment of internally deposited radionuclides are essential for monitoring and dosimetry of members of the public exposed due to radiation accidents. Selection of the methods for detection of internal contamination is determined by nuclear-physical characteristics of the deposits. For the population living in settlements located along the Techa River contaminate...
Response and toxicity prediction is essential to rational implementation of cancer therapy. The biologic effects of radionuclide therapy are mediated via a well-defined physical quantity, the absorbed dose, which is defined as the energy absorbed per unit mass of tissue. The concepts, basic definitions, and different approaches to the clinical implementation of absorbed dose estimation are revi...
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