Japanese Journal of Radiological Technology
Online ISSN : 1881-4883
Print ISSN : 0369-4305
ISSN-L : 0369-4305
Spatial Variation of the Section Sensitivity Profile in Helical CT
SHOICHI KATSUTAKOUZOU HANAITAKEO KUNIIHARUKI KIMURAWATARU IMABAYASHIYOSHIHISA MURAMATSU
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1999 Volume 55 Issue 11 Pages 1109-1114

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Abstract

The section sensitivity profile (SSP) is adequate to express the properties of helical CT images. Although SSP measurement has been performed only at the center of the imaging field, we applied it to off-center positions using a metal bead and controlled tracking technique. The experimental results indicated that SSP curves vary in the imaging field according to the relative position of the x-ray focus. The results were in agreement with computer simulations.

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© 1999 Japanese Society of Radiological Technology
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