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An MDCT image is reconstructed using a 512² matrix and a display field of view of 44 cm. If the detector collimation is set to a section width of 2.5 mm, what is the volume of each voxel?



A. 0.21 mm³
B. 1.85 mm³
C. 2.15 mm³
D. 3.36 mm³

This question is part of Medical Equipment(CT Scanner)
Asked by Mcburgerdevil, Last updated: Jul 02, 2020

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mcburgerdevil

Mcburgerdevil

Answered Oct 22, 2017

1.85 mm³

The correct answer is b. The linear dimension of the pixel must first be calculated by dividing the DFOV, in mm, by the matrix. This linear pixel dimension is squared to yield the pixel area, in mm. The volume of the voxel may be calculated by multiplying the pixel area by the section width. The correct answer is: 1.85 mm

 

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