Greetings Douglas,

don't expect that those with expertise in image processing are also experts in anatomy!

Please provide an annotated image that shows the (hand-drawn) line in question and explain which kind of segmentation you are after.

Last but not least, instead of the provided screen-shot, please provide the original 16-bit image in its lossless file format.

Regards

Herbie

:::::::::::::::::::::::::::::::::::::::::::::
Am 25.01.25 um 17:05 schrieb Benn, Douglas K:
[cid:91093e05-79a0-456b-8ffd-a236158abe85]
Good morning,

Can anybody please suggest a method using ImageJ macros to segment the nasal 
septum to form a line whose orientation can be used to rotate the axial slice 
so that the septum is at 90 degrees to the top image line 0?

The attached axial CT slice of the face has a clockwise rotation of about 4 
degrees. I know how rotate the image counter clockwise to correct this but 
cannot figure out how to extract a line for the septum.

Thank you for your help.

Douglas




Dr Douglas K Benn DDS, PhD, Dipl. Dental Radiology (Royal College of 
Radiologists, England)
Professor  of Radiology (Retired), Creighton University Dental School.
Professor Emeritus, University of Florida.


Residence:
Dr Douglas K Benn  DDS,  PhD, Dipl. Dental Radiology (Royal College of 
Radiologists, England)
Oral and Maxillofacial Radiologist
Apartado 189-4013
20501 Atenas, Alajuela,
Costa Rica

+506 2446 9310
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[email protected]
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