PURPOSE: To aid in the selection of incident X-ray energy for stereotactic irradiation (STI) of lung tumor, dose distribution was investigated in a model of a thorax embedded with a tumor. METHODS AND MATERIALS: The dose distribution in a thorax model was calculated using the EGS4 Monte Carlo simulation; it was also measured with dosimetric film of a tentative thorax phantom. Uniformity of dose distribution in a tumor region was compared among the results of irradiation for several X-ray energies, and optimal X-ray energy for STI of a lung tumor was discussed. RESULTS: Dose distributions in the thorax were obtained. An increase in X-ray energy led not only to an increased dose delivered to the tumor, but also to an increased dose to surrounding normal lung tissue. CONCLUSIONS: The flat range in dose distribution along the beam axis and in the beam profiles of the tumor increases with decreasing X-ray energy. Consequently, lower energy, rather than higher energy, is recommended for STI of a lung tumor in terms of higher uniformity in the target volume.
PURPOSE: To aid in the selection of incident X-ray energy for stereotactic irradiation (STI) of lung tumor, dose distribution was investigated in a model of a thorax embedded with a tumor. METHODS AND MATERIALS: The dose distribution in a thorax model was calculated using the EGS4 Monte Carlo simulation; it was also measured with dosimetric film of a tentative thorax phantom. Uniformity of dose distribution in a tumor region was compared among the results of irradiation for several X-ray energies, and optimal X-ray energy for STI of a lung tumor was discussed. RESULTS: Dose distributions in the thorax were obtained. An increase in X-ray energy led not only to an increased dose delivered to the tumor, but also to an increased dose to surrounding normal lung tissue. CONCLUSIONS: The flat range in dose distribution along the beam axis and in the beam profiles of the tumor increases with decreasing X-ray energy. Consequently, lower energy, rather than higher energy, is recommended for STI of a lung tumor in terms of higher uniformity in the target volume.
Authors: Oscar I Calvo; Alonso N Gutiérrez; Sotirios Stathakis; Carlos Esquivel; Nikos Papanikolaou Journal: J Appl Clin Med Phys Date: 2012-05-10 Impact factor: 2.102
Authors: J Wenz; S Schleede; K Khrennikov; M Bech; P Thibault; M Heigoldt; F Pfeiffer; S Karsch Journal: Nat Commun Date: 2015-07-20 Impact factor: 14.919
Authors: Michael B Altman; Jian-Yue Jin; Sangroh Kim; Ning Wen; Dezhi Liu; M Salim Siddiqui; Munther I Ajlouni; Benjamin Movsas; Indrin J Chetty Journal: J Appl Clin Med Phys Date: 2012-11-08 Impact factor: 2.102