نتایج جستجو برای: clinical dosimetry

تعداد نتایج: 1168967  

Journal: :iranian journal of radiation research 0
c.a. davis department of radiotherapy, national oncology center, royal hospital, muscat, sultanate of oman r. ravichandran department of radiotherapy, national oncology center, royal hospital, muscat, sultanate of oman j.p. binukumar department of radiotherapy, national oncology center, royal hospital, muscat, sultanate of oman k. el ghamrawy department of radiation oncology, university of cairo, cairo, egypt

background: for radiotherapy of total skin including sub-cutaneous tissue up to a depth of 3 cm on the entire left leg of an adult (angiosarcoma skin), a complex treatment with multiple stationary electron fields was planned at our clinic. the details of dosimetry, clinical dose measurements are presented. materials and methods: the treatment planned with 6 overlapping 9 mev electron fields in ...

2014
Antony L Palmer David Bradley Andrew Nisbet

The measurement of dose distributions in clinical brachytherapy, for the purpose of quality control, commissioning or dosimetric audit, is challenging and requires development. Radiochromic film dosimetry with a commercial flatbed scanner may be suitable, but careful methodologies are required to control various sources of uncertainty. Triple-channel dosimetry has recently been utilized in exte...

2016
Yutao U. T. Gong Jialu Yu Dalong Pang Heming Zhen James Galvin Ying Xiao

Radiotherapy clinical-trial quality assurance is a crucial yet challenging process. This note presents a tool that automatically extracts dose/volume statistics for determining dosimetry compliance review with improved efficiency and accuracy. A major objective of this study is to develop an automated solution for clinical-trial radiotherapy dosimetry review.

2003
G. Ibbott

Several national and international organizations have developed various types and levels of external audits for radiotherapy dosimetry, either based on on-site review visits or using mailed dosimetry systems. Three major TLD (thermoluminescent dosimetry) networks make available postal dose audits to a large number of radiotherapy centres on a regular basis. These are the IAEA/WHO TLD postal dos...

2013
F Nordström

In this study, a 4D dosimetry concept was developed. This concept included a method for calculation of 3D reference absorbed dose matrices at every control point of the delivery using a clinical treatment planning system (TPS). Further, the gamma evaluation method was extended to incorporate the 4 dimension of the TPS calculated dose distributions. The applications of the 4D dosimetry concept o...

Journal: :Physics in medicine and biology 2016
Brian W Pogue Jonathan T Elliott Stephen C Kanick Scott C Davis Kimberley S Samkoe Edward V Maytin Stephen P Pereira Tayyaba Hasan

Photodynamic therapy (PDT) can be a highly complex treatment, with many parameters influencing treatment efficacy. The extent to which dosimetry is used to monitor and standardize treatment delivery varies widely, ranging from measurement of a single surrogate marker to comprehensive approaches that aim to measure or estimate as many relevant parameters as possible. Today, most clinical PDT tre...

Journal: :Medical physics 2007
Sujatha Pai Indra J Das James F Dempsey Kwok L Lam Thomas J Losasso Arthur J Olch Jatinder R Palta Lawrence E Reinstein Dan Ritt Ellen E Wilcox

TG-69 is a task group report of the AAPM on the use of radiographic film for dosimetry. Radiographic films have been used for radiation dosimetry since the discovery of x-rays and have become an integral part of dose verification for both routine quality assurance and for complex treatments such as soft wedges (dynamic and virtual), intensity modulated radiation therapy (IMRT), image guided rad...

Journal: :Medical physics 2003
John Balog Gustavo Olivera Jeff Kapatoes

Helical tomotherapy presented many unique dosimetric challenges and solutions during the initial commissioning process, and some of them are presented. The dose calculation algorithm is convolution/superposition based. This requires that the energy fluence spectrum and magnitude be quantified. The methodology for doing so is described. Aspects of the energy fluence characterization that are uni...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید