Can you solve this?An image was produced with a 1.0mm aperture size - ProProfs Discuss
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Can you solve this?
An image was produced with a 1.0mm aperture size and was displayed using a 512^2 matrix and a 15-cm DFOV. The voxel dimension for this image would be ______



A. 0.29mm x 0.29mm x 1.0mm
B. 02.9mm x 2.9mm x 1.0mm
C. 3.4mm x 3.4mm x 1.0mm
D. 0.29mm x 0.29mm x 1.0cm

This question is part of CT Review :)
Asked by Anim, Last updated: Jan 01, 2020

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3 Answers

j.Mark

J.Mark

Answered Jan 02, 2018

To get the voxel dimension is a little tricky. I’m inclined to agree with the answer that Anim gave: 0.29 mm by 0.29 mm by 1.0 mm. The voxel dimensions are hard to pin down. This is because the voxels are not actually plotted on the axis of a piece. Instead, they are more like pixels. They’re usually inferred by a rendering system.

If they’re there, they show up on the screen. If they’re not there, they don’t show up. It’s as simple as that. That said, the answer that might make the most sense was given by Anim. I’m not sure what Adney’s answer is supposed to mean, but it looks very professional. That said, I don’t think it’s right.

 

John Adney

512÷15=34.1cm =3.4 mm
 

John Smith

John Smith

Answered Oct 29, 2016

0.29mm x 0.29mm x 1.0mm
 

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