[Prostate localization systems for prostate radiotherapy]. / Dispositifs de repositionnement prostatique sous l'accélérateur linéaire.
Cancer Radiother
; 10(6-7): 394-401, 2006 Nov.
Article
em Fr
| MEDLINE
| ID: mdl-17035061
The development of sophisticated conformal radiation therapy techniques for prostate cancer, such as intensity-modulated radiotherapy, implies precise and accurate targeting. Inter- and intrafraction prostate motion can be significant and should be characterized, unless the target volume may occasionally be missed. Indeed, bony landmark-based portal imaging does not provide the positional information for soft-tissue targets (prostate and seminal vesicles) or critical organs (rectum and bladder). In this article, we describe various prostate localization systems used before or during the fraction: rectal balloon, intraprostatic fiducials, ultrasound-based localization, integrated CT/linear accelerator system, megavoltage or kilovoltage cone-beam CT, Calypso 4D localization system tomotherapy, Cyberknife and Exactrac X-Ray 6D. The clinical benefit in using such prostate localization tools is not proven by randomized studies and the feasibility has just been established for some of these techniques. Nevertheless, these systems should improve local control by a more accurate delivery of an increased prescribed dose in a reduced planning target volume.
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Base de dados:
MEDLINE
Assunto principal:
Próstata
/
Neoplasias da Próstata
/
Radioterapia Conformacional
Tipo de estudo:
Clinical_trials
Limite:
Humans
/
Male
Idioma:
Fr
Ano de publicação:
2006
Tipo de documento:
Article