[[1] Balter JM, Sandler HM, Lam K, et al. Measurement of prostate movement over the course of routine radiotherapy using implanted markers. Int J Radiat Oncol Biol Phys. 1995;31(1):113-118.10.1016/0360-3016(94)00382-U]Search in Google Scholar
[[2] Bel A, Bartelink H, Vijbrief RE, et al. Transfer errors of planning CT to simulator: a possible source of set up inaccuracies? Radiother Oncol. 1994;31(2):176-180.10.1016/0167-8140(94)90398-0]Search in Google Scholar
[[3] Bel A, van Herk M, Lebesque JV. Target margins for random geometrical treatment uncertainties in conformal therapy. Med Phys. 1996;23(9):1537-1545.10.1118/1.597745]Search in Google Scholar
[[4] de Boer HC, Heijmen BJ. eNAL: An extension of the NAL setup correction protocol for effective use of weekly follow-up measurements. Int J Radiat Oncol Biol Phys. 2007;67(5):1586-1595.10.1016/j.ijrobp.2006.11.050]Search in Google Scholar
[[5] Ekberg L, Holmberg O, Wittgren L, at al. What margins should be added to the clinical target volume in radiotherapy treatment planning for lung cancer? Radiother Oncol. 1998;48(1):71-77.10.1016/S0167-8140(98)00046-2]Search in Google Scholar
[[6] El-Gayed AAH, Bel A, Vijlbrief RE, et al. Time trend of patient setup deviations during pelvic irradiation using electronic portal imaging. Radiother Oncol. 1993;26(2):162-171.10.1016/0167-8140(93)90098-S]Search in Google Scholar
[[7] Herman MG, Balter JM, Jaffray DA, et al. Clinical use of electronic portal imaging: report of AAPM Radiation Therapy Committee Task Group 58. Med Phys. 2001;28(5):713-734.10.1118/1.1368128]Search in Google Scholar
[[8] Hurkmans CW, Remeijer P, Lebesque JV, et al. Set-up verification using portal imaging : review of current clinical practice. Radiother Oncol. 2001;58(2):105-120.10.1016/S0167-8140(00)00260-7]Search in Google Scholar
[[9] International Commission on Radiation Units and Measurements. ICRU Report 50. Prescribing, recording and reporting photon beam therapy. Bethesda, MD: ICRU, 1993.]Search in Google Scholar
[[10] International Commission on Radiation Units and Measurements. ICRU Report 62. (Supplement to ICRU Report 50). Prescribing, recording and reporting photon beam therapy. Bethesda, MD: ICRU, 1999.]Search in Google Scholar
[[11] Jaffray DA, Siewerdsen JH, Wong JW, et al. Flat-panel cone-beam computed tomography for image-guided radiation therapy. Int J Radiat Oncol Biol Phys. 2002:53(5):1337-1349.10.1016/S0360-3016(02)02884-5]Search in Google Scholar
[[12] Geometric Uncertainties in radiotherapy, Defining the Planning Target Volume. The British Institute of Radiology, 2003.]Search in Google Scholar
[[13] McKenzie AL, van Herk M, Mijnheer B. The width of margins in radiotherapy treatment plans. Phys Med Biol. 2000; 45(11):3331-3342.10.1088/0031-9155/45/11/31511098907]Search in Google Scholar
[[14] McKenzie AL. How should breathing motion be combined with other errors when drawing margins around clinical target volumes? Br J Radiol. 2000;73(873):973-977.10.1259/bjr.73.873.11064651]Search in Google Scholar
[[15] McKenzie AL, van Herk M, Mijnheer B. Margins for geometric uncertainty around organs at risk in radiotherapy. Radiother Oncol. 2002;62(3):299-307.10.1016/S0167-8140(02)00015-4]Search in Google Scholar
[[16] Penninkhof J, Quint S, Baaijens M, et al. Practical use of the extended no action level (eNAL) correction protocol for breast cancer patients with implanted surgical clips. Int J Radiat Oncol Biol Phys. 2012;82(2):1031-1037.10.1016/j.ijrobp.2010.12.059]Search in Google Scholar
[[17] Remeijer P, Rasch C, Lebesque JV, et al. A general methodology for 3D analysis of variation in target volume delineation. Med Phys. 1999;26(6):931-940.10.1118/1.598485]Search in Google Scholar
[[18] Samson MJ, van Sornsen de Koste JR, de Boer HCJ, et al. An analysis of anatomic landmark mobility and setup deviations in radiotherapy for lung cancer. Int J Radiat Oncol Biol Phys. 1999;43(4):827-832.10.1016/S0360-3016(98)00467-2]Search in Google Scholar
[[19] Stroom JC, de Boer HC, Huizenga H, et al. Inclusion of geometrical uncertainties in radiotherapy treatment planning by means of coverage probability. Int J Radiat Oncol Biol Phys. 1999;43(4):905-919.10.1016/S0360-3016(98)00468-4]Search in Google Scholar
[[20] de Boer HC, Heijmen BJ. eNAL: An extension of the NAL setup correction protocol for effective use of weekly followup measurements. Int J Radiat Oncol Biol Phys. 2007;67(5):1586-1595.10.1016/j.ijrobp.2006.11.050]Search in Google Scholar
[[21] Stroom J, Gilhuijs K, Viera S, at al. Combined Recipe for Clinical target Volume and Planning Target Volumes. Int J Radiat Oncol Biol Phys. 2014;88(3):708-714.10.1016/j.ijrobp.2013.08.028]Search in Google Scholar
[[22] van Elmpt W, McDermott L, Nijsten S, et al. A literature review of electronic portal imaging for radiotherapy dosimetry. Radiother Oncol. 2008;88(3):289-309.10.1016/j.radonc.2008.07.008]Search in Google Scholar
[[23] van Herk M, Remeijer P, Rasch C, et al. The probability of correct target dosage: dose - population histograms for deriving treatment margins of radiotherapy. Int J Radiat Oncol Biol Phys. 2000;47(4):1121-1135.10.1016/S0360-3016(00)00518-6]Search in Google Scholar
[[24] van Herk M. Errors and margins in radiotherapy. Semin Radiat Oncol. 2004;14(1):52-64.10.1053/j.semradonc.2003.10.00314752733]Search in Google Scholar
[[25] Verellen D, De Ridder M, Tournel K, et al. An overview of volumetric imaging technologies and their quality assurance for IGRT. Acta Oncologica. 2008; 47(7): 1271-1278.10.1080/0284186080224418218618343]Search in Google Scholar