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KMID : 1164219950070010156
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Journal of Korean Society for Radiotherapeutic Technology
1995 Volume.7 No. 1 p.156 ~ p.166
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THE METHOD OF TBI FOR ACCURATE REPRODUCTION OF RADIATION FIELD AND PATIENT POSITION
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Kwoen Young-Ho
Lee Byung-Koo
Hwang Woong-Ku
Kim Yoo-Hyun
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Abstract
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Total body irradiation (TBI) requires large radiation field and extended source to axis distance (SAD), therefore in needs large size treatment room and it needs compensators which components. Appropriate thickness beam spoiler should be used to raise skin dose. Treatment machine, photon energy, total dose, dose rate, dose fractionation, patient position, shield of normal tissues and organs were known to important parameters for TBI. TBI disturbes regular daily treatment schedule and significantly overloads Radiation on oncology departments and during the treatment session it requires accurate reproduction of radiation field and patient position. We were enable to TBI in small size treatment room and short SAD with parallel opposing lateral fields technique and achieved homogenious whole body dose distribution using pb compensators and controled lung dose by lung shield blocks. Drawing a patient shadow on the wall, we could shortened set up time and possible to accurate reproduction of radiation field and patient position.
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KEYWORD
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