Method and apparatus for tomosynthesis image quality control

Details Method and apparatus for tomosynthesis image quality control Method and apparatus for tomosynthesis image quality control

2007-10-23

2007-10-23

Yun, Jurie (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Tomography

C378S207000

Reexamination Certificate

active

11339067

ABSTRACT:
A method and apparatus for tomosynthesis image quality control for a tomosynthesis imaging system. The method and apparatus including: positioning a phantom having an edge of predetermined sharpness at a predetermined angle relative to an imaging plane of an x-ray detector; performing tomosynthesis acquisition and generating one or more slice images using one or more three-dimensional reconstruction algorithms; selecting a slice image to be measured from the one or more slice images; identifying a sharpest edge in the slice image to be measured, wherein the sharpest edge in the slice image to be measured includes the in-focus portion of the phantom; inputting the slice image to be measured and coordinates of the sharpest edge in the slice image to be measured into a modulation transfer function (MTF) algorithm; and, using the MTF algorithm, calculating the in-plane resolution and slice thickness of the slice image to be measured.

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