Radiotherapy quality assurance by individualized in vivo dosimetry: state of the art

The quality insurance in radiotherapy in the frame of highly complex technical process as Intensity modulated radiotherapy (IMRT) needs independent control of the delivered dose to the patient. Actually, up to now, most of the radiotherapy treatments rely only on computed dosimetry through a rather...

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Bibliographic Details
Published in:Cancer radiothérapie 2009-06, Vol.13 (3), p.182-9
Main Authors: Ismail, A, Giraud, J-Y, Lu, G N, Sihanath, R, Pittet, P, Galvan, J M, Balosso, J
Format: Article
Language:English
Subjects:
Bioengineering
Cancer
Engineering Sciences
Humans
Life Sciences
Neoplasms
Neoplasms - radiotherapy
Quality Assurance, Health Care
Radiation Monitoring
Radiation Monitoring - instrumentation
Radiation Monitoring - methods
Radiometry
Radiometry - instrumentation
Radiometry - methods
Radiotherapy Dosage
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Summary:The quality insurance in radiotherapy in the frame of highly complex technical process as Intensity modulated radiotherapy (IMRT) needs independent control of the delivered dose to the patient. Actually, up to now, most of the radiotherapy treatments rely only on computed dosimetry through a rather complicated series of linked simulation tool. This dosimetry approach requires also qualified treatment means based on cautious quality insurance procedures. However, erroneous parameters could be difficult to detect and systematical errors could happen leading to radiotherapy accidents. In this context, in vivo dosimetry has a critical role of final control of the delivered dose. As many beam incidences and ports are used for any photontherapy treatment, external control could be very tedious and time consuming. Therefore, innovations are needed for in vivo dosimetry to provide ergonomic and efficient tools for these controls. This paper presents a review of technologies and products that can be used for in vivo dosimetry. It proposes also a reflection on the concepts to develop future devices suitable for this purpose. The technical means with their physical principles are reviewed, the clinical experiences demonstrating the feasibility of new techniques are then summarized and finally, the early clinical use and its impact on clinical practice is review.
ISSN:1278-3218
1769-6658
DOI:10.1016/j.canrad.2009.01.001