نتایج جستجو برای: patient dosimetry

تعداد نتایج: 716269  

Journal: :Physics in medicine and biology 2011
I Mrčela T Bokulić J Izewska M Budanec A Fröbe Z Kusić

A commercial optically stimulated luminescence (OSL) dosimetry system was investigated for in vivo dosimetry in radiation therapy. Dosimetric characteristics of InLight dot dosimeters and a microStar reader (Landauer Inc.) were tested in (60)Co beams. The reading uncertainty of a single dosimeter was 0.6%. The reproducibility of a set of dosimeters after a single irradiation was 1.6%, while in ...

2017
Russ Kuker Manuel Sztejnberg Seza Gulec

Although radioactive iodine imaging and therapy are one of the earliest applications of theranostics, there still remain a number of unresolved clinical questions as to the optimization of diagnostic techniques and dosimetry protocols. I-124 as a positron emission tomography (PET) radiotracer has the potential to improve the current clinical practice in the diagnosis and treatment of differenti...

2016
A. Abaza

Radiotherapy (RT) has played important roles in cancer treatment for more than one century. The development of RT techniques allows high-dose irradiation to tumors while reducing the radiation doses delivered to surrounding normal tissues. However, RT is a complex process and involves understanding of the principles of medical physics, radiobiology, radiation safety, dosimetry, radiation treatm...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2009
Darrell R Fisher Sui Shen Ruby F Meredith

UNLABELLED Absorbed-dose calculations provide a scientific basis for evaluating the biologic effects associated with administered radiopharmaceuticals. In cancer therapy, radiation dosimetry supports treatment planning, dose-response analyses, predictions of therapy effectiveness, and completeness of patient medical records. In this study, we evaluated the organ radiation absorbed doses from in...

Journal: :Physica Medica 2021

PurposePatient-specific dosimetry in MRT relies on quantitative imaging, pharmacokinetic assessment and absorbed dose calculation. The DosiTest project was initiated to evaluate the uncertainties associated with each step of clinical workflow through a virtual multicentric trial. This work presents generation simulated SPECT datasets based GATE Monte Carlo modelling its corresponding experiment...

Journal: :Physics in medicine and biology 2004
Tsang Cheung Martin J Butson Peter K N Yu

This note investigates temperature effects on dosimetry using a metal oxide semiconductor field effect transistor (MOSFET) for radiotherapy x-ray treatment. This was performed by analysing the dose response and threshold voltage outputs for MOSFET dosimeters as a function of ambient temperature. Results have shown that the clinical semiconductor dosimetry system (CSDS) MOSFET provides stable do...

2012
Qinan Bao Brian A Hrycushko Joseph P Dugas Frederick H Hager Timothy D Solberg

BACKGROUND Total skin electron irradiation (TSEI) is a special radiotherapy technique which has generally been used for treating adult patients with mycosis fungoides. Recently, two infants presented with leukemia cutis isolated to the skin requiring TSEI. This work discusses the commissioning and quality assurance (QA) methods for implementing a modified Stanford technique using a rotating har...

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