Measurements of the MTF of a small animal micro-CT system

Authors

Qin Wei, Shanghai Institute of Applied Physics of CAS
Yujin Qi, University of WollongongFollow
Xuezhu Zhang, Chinese Academy Of Sciences

RIS ID

79224

Publication Details

Wei, Q., Qi, Y. & Zhang, X. (2011). Measurements of the MTF of a small animal micro-CT system. Hedianzixue Yu Tance Jishu, 31 (3), 293-296, 318.

Abstract

The aim of the study was to determine the spatial resolution of the small animal micro-CT system.A standard wire phantom was used to measure the modular transfer function(MTF)of the micro-CT system.On the imaging conditions with X-ray tube voltage of 40 kVp,exposure time of 1 second,detector mode of 2×2, and system magnification factor of 2,the measured system spatial resolution is ~11lp/mm at 10%MTF,which is about 91 microns.The results showed that the small animal micro-CT that we developed has met our design goal to achieve the spatial resolution under 100 microns.