H. Alasti, M. Petric, C. Catton, and P. Warde, Portal imaging for evaluation of daily on-line setup errors and off-line organ motion during conformal irradiation of carcinoma of the prostate, International Journal of Radiation Oncology*Biology*Physics, vol.49, issue.3, pp.869-84, 2001.
DOI : 10.1016/S0360-3016(00)01446-2

J. Antolak and I. Rosen, Planning target volumes for radiotherapy: how much margin is needed?, International Journal of Radiation Oncology*Biology*Physics, vol.44, issue.5, pp.1165-70, 1999.
DOI : 10.1016/S0360-3016(99)00117-0

V. Beckendorf, J. Bachaud, P. Bey, S. Bourdin, C. C. Chapet et al., Target-volume and critical-organ delineation for conformal radiotherapy of prostate cancer: experience of French dose-escalation trials, Cancer Radiother, vol.65, issue.1, pp.78-92, 2002.

A. Bel, M. Van-herk, H. Bartelink, J. Lebesque, A. Bel et al., A verification procedure to improve patient set-up accuracy using portal images High-precision prostate cancer irradiation by clinical application of an offline patient setup verification procedure, using portal imaging A method for registration of 3-D shapes Interphysician variability in defining the planning target volume in the irradiation of prostate and seminal vesicles Detailed mapping of prostate carcinoma foci: biopsy strategy implications, Radiother Oncol Int J Radiat Oncol Biol Phys IEEE Transactions on pattern analysis and machine intelligence Radiother Oncol Cancer, vol.2935144789, issue.22238, pp.253-60321, 1992.

L. Court, L. Dong, A. Lee, R. Cheung, M. Bonnen et al., An automatic CT-guided adaptive radiation therapy technique by online modification of multileaf collimator leaf positions for prostate cancer, International Journal of Radiation Oncology*Biology*Physics, vol.62, issue.1, pp.154-63, 2005.
DOI : 10.1016/j.ijrobp.2004.09.045

R. De-crevoisier, J. Lagrange, T. Messai, M. Barek, B. Lefkopoulos et al., Dispositifs de??repositionnement prostatique sous??l'acc??l??rateur lin??aire, Cancer/Radioth??rapie, vol.10, issue.6-7, pp.6-7394, 2006.
DOI : 10.1016/j.canrad.2006.09.002

R. De-crevoisier, S. Tucker, L. Dong, R. Mohan, R. Cheung et al., Increased risk of biochemical and local failure in patients with distended rectum on the planning CT for prostate cancer radiotherapy, International Journal of Radiation Oncology*Biology*Physics, vol.62, issue.4, pp.965-73, 2005.
DOI : 10.1016/j.ijrobp.2004.11.032

C. Fiorino, M. Reni, A. Bolognesi, G. Cattaneo, and R. Calandrino, Intra- and inter-observer variability in contouring prostate and seminal vesicles: implications for conformal treatment planning, Radiotherapy and Oncology, vol.47, issue.3, pp.285-92, 1998.
DOI : 10.1016/S0167-8140(98)00021-8

C. Fiorino, V. Vavassori, G. Sanguineti, C. Bianchi, G. Cattaneo et al., Rectum contouring variability in patients treated for prostate cancer: impact on rectum dose???volume histograms and normal tissue complication probability, Radiotherapy and Oncology, vol.63, issue.3, pp.249-55, 2002.
DOI : 10.1016/S0167-8140(01)00469-8

F. Foppiano, C. Fiorino, G. Frezza, C. Greco, and R. Valdagni, The impact of contouring uncertainty on rectal 3D dose???volume data: Results of a dummy run in a multicenter trial (AIROPROS01???02), International Journal of Radiation Oncology*Biology*Physics, vol.57, issue.2, pp.573-582, 2003.
DOI : 10.1016/S0360-3016(03)00659-X

K. Gilhuijs, A. Gayed, M. Van-herk, and R. Vijlbrief, An algorithm for automatic analysis of portal images: clinical evaluation for prostate treatments, Radiotherapy and Oncology, vol.29, issue.2, pp.261-269, 1993.
DOI : 10.1016/0167-8140(93)90256-8

J. Hannoun-levi, K. Benezery, P. Bondiau, E. Chamorey, M. S. Gerard et al., Radioth??rapie robotis??e des??cancers de??prostate par??CyberKnife???, Cancer/Radioth??rapie, vol.11, issue.8, pp.476-82, 2007.
DOI : 10.1016/j.canrad.2007.07.005

W. Heemsbergen, M. Hoogeman, M. Witte, S. Peeters, L. Incrocci et al., Increased Risk of Biochemical and Clinical Failure for Prostate Patients with a Large Rectum at Radiotherapy Planning: Results from the Dutch Trial of 68 GY Versus 78 Gy, International Journal of Radiation Oncology*Biology*Physics, vol.67, issue.5, pp.1418-1442, 2007.
DOI : 10.1016/j.ijrobp.2006.11.014

C. Hua, D. Lovelock, G. Mageras, M. Katz, J. Mechalakos et al., Development of a semi-automatic alignment tool for accelerated localization of the prostate, International Journal of Radiation Oncology*Biology*Physics, vol.55, issue.3, pp.811-835, 2003.
DOI : 10.1016/S0360-3016(02)04207-4

M. Jones and C. Min, A New Approach to the Construction of Surfaces from Contour Data, Computer Graphics Forum, vol.13, issue.3, pp.75-84, 1994.
DOI : 10.1111/1467-8659.1330075

D. Kuban, L. Dong, R. Cheung, E. Strom, D. Crevoisier et al., Ultrasound-Based Localization, Seminars in Radiation Oncology, vol.15, issue.3, pp.180-91, 2005.
DOI : 10.1016/j.semradonc.2005.01.009

D. Kuban, S. Tucker, L. Dong, G. Starkschall, E. Huang et al., Long-Term Results of the M. D. Anderson Randomized Dose-Escalation Trial for Prostate Cancer, International Journal of Radiation Oncology*Biology*Physics, vol.70, issue.1, pp.67-74, 2008.
DOI : 10.1016/j.ijrobp.2007.06.054

D. Little, L. Dong, L. Levy, A. Chandra, and D. Kuban, Use of portal images and BAT ultrasonography to measure setup error and organ motion for prostate IMRT: implications for treatment margins, International Journal of Radiation Oncology*Biology*Physics, vol.56, issue.5, pp.1218-1242, 2003.
DOI : 10.1016/S0360-3016(03)00290-6

D. Litzenberg, L. Dawson, H. Sandler, M. Sanda, D. Mcshan et al., Daily prostate targeting using implanted radiopaque markers, International Journal of Radiation Oncology*Biology*Physics, vol.52, issue.3, pp.699-703, 2002.
DOI : 10.1016/S0360-3016(01)02654-2

W. Lorensen and H. Cline, Marching cubes: A high resolution 3D surface construction algorithm, ACM SIGGRAPH Computer Graphics, vol.21, issue.4, pp.163-70, 1987.
DOI : 10.1145/37402.37422

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

E. Melian, G. Mageras, Z. Fuks, S. Leibel, A. Niehaus et al., Variation in prostate position quantitation and implications for three-dimensional conformal treatment planning, International Journal of Radiation Oncology*Biology*Physics, vol.38, issue.1, pp.73-81, 1997.
DOI : 10.1016/S0360-3016(97)00221-6

S. Naudy, K. Peignaux, J. Brenier, G. Crehange, A. Arnaud et al., Implementation of transabdominal ultrasound image guided conformal intensity modulated radiotherapy], Cancer Radiother, vol.10, pp.6-7388, 2006.

A. Nederveen, J. Lagendijk, and P. Hofman, Detection of fiducial gold markers for automatic on-line megavoltage position verification using a marker extraction kernel (MEK), International Journal of Radiation Oncology*Biology*Physics, vol.47, issue.5, pp.1435-1477, 2000.
DOI : 10.1016/S0360-3016(00)00523-X

R. Oozeer, B. Chauvet, B. Toy, C. Berger, R. Garcia et al., D??finition des contours prostatiques sur coupes tomodensitom??triques: ??tude des discordances entre radioth??rapeutes et entre examens, Cancer/Radioth??rapie, vol.3, issue.4, pp.333-373, 1999.
DOI : 10.1016/S1278-3218(99)80076-6

T. Pickles, A. Agranovich, E. Berthelet, G. Duncan, M. Keyes et al., Testosterone recovery following prolonged adjuvant androgen ablation for prostate carcinoma, Cancer, vol.18, issue.2, pp.362-369, 2002.
DOI : 10.1002/cncr.10219

J. Pouliot, O. Morin, M. Aubin, J. Aubry, J. Chen et al., M??gavoltage cone-beam CT??: r??cents d??veloppements et??applications cliniques pour??la??radioth??rapie conformationnelle avec??modulation d'intensit??, Cancer/Radioth??rapie, vol.10, issue.5, pp.258-68, 2006.
DOI : 10.1016/j.canrad.2006.05.010

J. Schallenkamp, M. Herman, J. Kruse, and T. Pisansky, Prostate position relative to pelvic bony anatomy based on intraprostatic gold markers and electronic portal imaging, International Journal of Radiation Oncology*Biology*Physics, vol.63, issue.3, pp.800-811, 2005.
DOI : 10.1016/j.ijrobp.2005.02.022

D. Schulze, J. Liang, D. Yan, and T. Zhang, Comparison of various online IGRT strategies: The benefits of online treatment plan re-optimization, Radiotherapy and Oncology, vol.90, issue.3, 2008.
DOI : 10.1016/j.radonc.2008.08.012

B. Sorcini and A. Tilikidis, Clinical application of??image-guided radiotherapy, IGRT (on??the??Varian OBI platform), Cancer/Radioth??rapie, vol.10, issue.5, pp.252-259, 2006.
DOI : 10.1016/j.canrad.2006.05.012

J. Stroom and B. Heijmen, Geometrical uncertainties, radiotherapy planning margins, and the ICRU-62 report, Radiotherapy and Oncology, vol.64, issue.1, pp.75-83, 2002.
DOI : 10.1016/S0167-8140(02)00140-8

T. Haken, R. Forman, J. Heimburger, D. Gerhardsson, A. Mcshan et al., Treatment planning issues related to prostate movement in response to differential filling of the rectum and bladder, International Journal of Radiation Oncology*Biology*Physics, vol.20, issue.6, pp.1317-1341, 1991.
DOI : 10.1016/0360-3016(91)90244-X

M. Van-herk, A. Bruce, A. Kroes, T. Shouman, A. Touw et al., Quantification of organ motion during conformal radiotherapy of the prostate by three dimensional image registration, International Journal of Radiation Oncology*Biology*Physics, vol.33, issue.5, pp.1311-1331, 1995.
DOI : 10.1016/0360-3016(95)00116-6

M. Van-herk, P. Remeijer, C. Rasch, and J. Lebesque, The probability of correct target dosage: dose-population histograms for deriving treatment margins in radiotherapy, International Journal of Radiation Oncology*Biology*Physics, vol.47, issue.4, pp.1121-1156, 2000.
DOI : 10.1016/S0360-3016(00)00518-6

D. Verellen, G. Soete, N. Linthout, K. Tournel, and G. Storme, Optimal control of??set-up margins and??internal margins for??intra- and??extracranial radiotherapy using stereoscopic kilovoltage imaging, Cancer/Radioth??rapie, vol.10, issue.5, pp.235-279, 2006.
DOI : 10.1016/j.canrad.2006.05.011

J. Wu, T. Haycocks, H. Alasti, G. Ottewell, N. Middlemiss et al., Positioning errors and prostate motion during conformal prostate radiotherapy using on-line isocentre set-up verification and implanted prostate markers, Radiotherapy and Oncology, vol.61, issue.2, pp.127-160, 2001.
DOI : 10.1016/S0167-8140(01)00452-2

D. Yan, J. Wong, F. Vicini, J. Michalski, C. Pan et al., Adaptive modification of treatment planning to minimize the deleterious effects of treatment setup errors, International Journal of Radiation Oncology*Biology*Physics, vol.38, issue.1, pp.197-206, 1997.
DOI : 10.1016/S0360-3016(97)00229-0

M. Zelefsky, D. Crean, G. Mageras, O. Lyass, L. Happersett et al., Quantification and predictors of prostate position variability in 50 patients evaluated with multiple CT scans during conformal radiotherapy, Radiotherapy and Oncology, vol.50, issue.2, pp.225-259, 1999.
DOI : 10.1016/S0167-8140(99)00011-0

DOI : 10.1016/S0022-5347(05)65855-7