診断用X線管からのX線スペクトルの結晶分光計による測定

概要

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The x-ray spectra from an x-ray tube for diagnostic use has been measured using a curved crystal spectrometer of transmission type. A diagnostic xray tube with a tungsten target was operated under fluoroscopic (80,70,60kVp,0.25mAcont.) and roentgenographic (80kVp,10mA,0.2s) conditions.<BR>Measured spectra were corrected concerning counting loss, integrated reflecting power of the analyzing crystal, absorption of air path and Be window of NaI (T1) scintillator.<BR>We have compared our spectra with those measured by solid state detector and NaI(T1) scintillation counter which have been reported so far. These spectra do not consistent with each other.<BR>The spectrum obtained under the roentgenographic condition shows higher intensity on the low energy region compared to the spectrum obtained under the fluoroscopic condition.
Japan Society of Medical Physicsの論文