how can I get that the thikness of one slice of a CT image is measured at the milimeter level?

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jack nn 2015-6-17

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https://ww2.mathworks.cn/matlabcentral/answers/224190-how-can-i-get-that-the-thikness-of-one-slice-of-a-ct-image-is-measured-at-the-milimeter-level

评论： Walter Roberson 2015-6-18

hi everyone I got a code for DICOM viewer in this link: http://www.mathworks.com/matlabcentral/fileexchange/4172-dicom-viewer

The thickness of each slice is important for me. in this code I can see this but I don't know Is this measured at the millimeter level? my question is this: how can I get that the thickness of one slice of a CT image is measured at the millimeter level? if it is not measured in millimeter how can I transfer it to millimeter? I appreciate your helps and supports in advanced.

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Answer 1

Walter Roberson 2015-6-18

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https://ww2.mathworks.cn/matlabcentral/answers/224190-how-can-i-get-that-the-thikness-of-one-slice-of-a-ct-image-is-measured-at-the-milimeter-level#answer_183101

Yes, DICOM tag (0018,0050) Slice Thickness is in mm. See http://medical.nema.org/Dicom/2011/11_03pu.pdf Table C.7-10

Note that Slice Thickness is allowed to be different for different slices. There is a useful discussion at https://groups.google.com/forum/#!topic/comp.protocols.dicom/_VwpyrH36xw

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jack nn 2015-6-18

thanks dear Walter Roberson

these links are very helpful for me. excuse me, but I can't see DICOM tag (0018,0050) in this code. ( http://www.mathworks.com/matlabcentral/fileexchange/4172-dicom-viewer )

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Answer 2

Henric Rydén 2015-6-18

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https://ww2.mathworks.cn/matlabcentral/answers/224190-how-can-i-get-that-the-thikness-of-one-slice-of-a-ct-image-is-measured-at-the-milimeter-level#answer_183174

在 MATLAB Online 中打开

Read tags only, not the image:

info = dicominfo('filename.dcm');

Get slice thickness in mm:

info.SliceThickness

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jack nn 2015-6-18

thanks dear Henric Rydén so you mean that if I use dicominfo and after that I use info.SliceThickness and the result is 1.2500, it means that SliceThickness is 1.2500 millimeter?