“…16 There are several clinical applications with the use of image guidance system. Few examples are: (i) it provides image guidance to determine the target position with respect to treatment beam 17,18 ; (ii) it is used to estimate the patient positioning uncertainties and to justify the CTV-PTV margin for different sites 19 ; (iii) it is used in dose calculation 20 and exit dosimetry to predict the dose delivered to the patient in each fraction 21 ; (iv) it is used to investigate the changes in the tumour volume and thereby determine the requirement for adaptive planning 22 ; (v) it provides 3D anatomic information without artefacts for patients with implanted metallic objects. 23 The periodic calibration and QA of imaging system gives confidence to apply IGRT clinically.…”
“…16 There are several clinical applications with the use of image guidance system. Few examples are: (i) it provides image guidance to determine the target position with respect to treatment beam 17,18 ; (ii) it is used to estimate the patient positioning uncertainties and to justify the CTV-PTV margin for different sites 19 ; (iii) it is used in dose calculation 20 and exit dosimetry to predict the dose delivered to the patient in each fraction 21 ; (iv) it is used to investigate the changes in the tumour volume and thereby determine the requirement for adaptive planning 22 ; (v) it provides 3D anatomic information without artefacts for patients with implanted metallic objects. 23 The periodic calibration and QA of imaging system gives confidence to apply IGRT clinically.…”
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