Results 201 to 210 of about 15,949 (247)
Generalized EPID calibration for in vivo transit dosimetry [PDF]
Physica Medica, 2011 Many researchers are studying new in vivo dosimetry methods based on the use of Elelctronic portal imaging devices (EPIDs) that are simple and efficient in their daily use. However the need of time consuming implementation measurements with solid water phantoms for the in vivo dosimetry implementation can discourage someone in their use.
Savino Cilla +2 more
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In aqua vivo EPID dosimetry. [PDF]
Medical physics, 2012 Item does not contain ...
Van Herk, Marcel; id_orcid 0000-0001-6448-898X +9 more
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Catching errors with in vivo EPID dosimetry [PDF]
Medical Physics, 2010 The potential for detrimental incidents and the ever increasing complexity of patient treatments emphasize the need for accurate dosimetric verification in radiotherapy. For this reason, all curative treatments are verified, either pretreatment or in vivo, by electronic portal imaging device (EPID) dosimetry in the Radiation Oncology Department of the ...
Van Herk, Marcel; id_orcid 0000-0001-6448-898X +9 more
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In-vivo dosimetry for gynaecological brachytherapy: Physical and clinical considerations [PDF]
Radiotherapy and Oncology, 2005 Introduction: The study aimed to estimate the dosimetric uncertainty using diodes (PTW/Germany) for a high-dose rate Iridum-192 source under clinical conditions. Finally, the role of in-vivo dosimetry for cervix cancer patients was evaluated.
Richard Potter, Dietmar Georg
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Radiotherapy and Oncology, 1993
In recent years, numerous publications have shown the feasibility and usefulness of in vivo dosimetry as an essential tool of quality assurance programs in radiotherapy [ 1,3,6,11]. In the context of this meeting on high dose/high precision radiotherapy, the presentations and discussions on in vivo dosimetry centred on its value for investigating the ...
G, Garavaglia +3 more
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In recent years, numerous publications have shown the feasibility and usefulness of in vivo dosimetry as an essential tool of quality assurance programs in radiotherapy [ 1,3,6,11]. In the context of this meeting on high dose/high precision radiotherapy, the presentations and discussions on in vivo dosimetry centred on its value for investigating the ...
G, Garavaglia +3 more
openaire +2 more sources
In-vivo portal dosimetry by an ionization chamber
Physica Medica, 2005As all methods for in-vivo dosimetry require special efforts many physicists are often discouraged in verifying the middle dose in a patient along the beam central axis. This work reports a practical method for the determination of the middle dose value, D(m), on the central beam axis, using a signal S(t), obtained by a small thimble ion-chamber ...
Piermattei, Angelo +10 more
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2017
In vivo dosimetry is an essential tool in quality-assurance programs. It is important to check the dose delivered to patients undergoing radiation treatment to avoid over or underdosing in areas in which assurance of planning accuracy may be needed. Radiochromic films are uniquely able to measure not only point doses but also two-dimensional maps of ...
Butson, Martin +3 more
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In vivo dosimetry is an essential tool in quality-assurance programs. It is important to check the dose delivered to patients undergoing radiation treatment to avoid over or underdosing in areas in which assurance of planning accuracy may be needed. Radiochromic films are uniquely able to measure not only point doses but also two-dimensional maps of ...
Butson, Martin +3 more
openaire +2 more sources
Physics in Medicine and Biology, 1997
This paper starts with definitions of radiance, fluence (rate) and other quantities that are important with regard to in vivo light dosimetry. The light distribution in mammalian tissues can be estimated from model calculations using measured optical properties or from direct measurements of fluence rate using a suitable detector.
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This paper starts with definitions of radiance, fluence (rate) and other quantities that are important with regard to in vivo light dosimetry. The light distribution in mammalian tissues can be estimated from model calculations using measured optical properties or from direct measurements of fluence rate using a suitable detector.
openaire +3 more sources
AIP Conference Proceedings, 2011
In vivo dosimetry has a well established role in the quality assurance of 2D radiotherapy and 3D conformal radiotherapy. The role of in vivo dosimetry for IMRT is not as well established. IMRT introduces a range of technical issues that complicate in vivo dosimetry.
Philip Vial +4 more
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In vivo dosimetry has a well established role in the quality assurance of 2D radiotherapy and 3D conformal radiotherapy. The role of in vivo dosimetry for IMRT is not as well established. IMRT introduces a range of technical issues that complicate in vivo dosimetry.
Philip Vial +4 more
openaire +1 more source
State of the art of in vivo dosimetry
Radiation Protection Dosimetry, 2008The complexity of modern radiotherapy requires a comprehensive quality assurance programme, including in vivo dosimetry. In this paper, the use of the detector systems most often used for in vivo dosimetry [diodes, thermoluminescence detectors, metal oxide field effect transistors and electronic portal imaging devices (EPIDs)] will be summarised ...
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