Measurement of spatial resolution of the micro-CT system

RONG Jun-Yan; FU Guo-Tao; WEI Cun-Feng; SUN Cui-Li; WEI Long

doi:10.1088/1674-1137/34/3/022

Chinese Physics C> 2010, Vol. 34> Issue(3) : 412-416 DOI: 10.1088/1674-1137/34/3/022

Measurement of spatial resolution of the micro-CT system

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Abstract：
The performance test is an important and necessary work for the micro-CT (computed tomography) system. The focal spot size of the micro focus X-ray tube is measured. The method of measuring the spatial resolution of micro-CT is introduced. A line-pair resolution of 28.2 lp/mm at the 10% modulation transfer function (MTF) level can be achieved with 14.7 μm spot size, 12.3 μm voxel size and a 25 mm field of view. In addition, a tungsten wire with the diameter of 5 μm can be detected by the system.

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RONG Jun-Yan, FU Guo-Tao, WEI Cun-Feng, SUN Cui-Li and WEI Long. Measurement of spatial resolution of the micro-CT system[J]. Chinese Physics C, 2010, 34(3): 412-416. doi: 10.1088/1674-1137/34/3/022

RONG Jun-Yan, FU Guo-Tao, WEI Cun-Feng, SUN Cui-Li and WEI Long. Measurement of spatial resolution of the micro-CT system[J]. Chinese Physics C, 2010, 34(3): 412-416. doi: 10.1088/1674-1137/34/3/022 shu

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Received: 2009-03-30
Revised: 2009-04-29

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