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I have many images from a computed tomography. I have to visualize them in a 3d image. The z spacing (distance between each plane) is 2 mm so I must use a rectangular voxel (not a square one) to get a correct 3d image.
How can i define the voxel size?
Image Analyst on 14 Feb 2012
Your instrument knows. The voxel size is put into the header of your image by your CT instrument when it reconstructs your image. You just have to look in the header. I have 3 CT instruments from 2 manufacturers and this is the way it is done on all of them.
Amera Al-funjan on 22 Apr 2017
I have CT lung DICOM images and I could cluster the nodules and vessels in the lungs of patient stack images that contain 6 nodules in different images of stack and I want to visualize the nodule clusters in the 3D plot in different levels with their voxel in order to visualize the merging between radiologists nodules and the clustered nodules in my system . The problem is that I need to convert the clusters unit(pixels) to radiologists unit (mm). How can I convert the unit from pixels to mm? if I have pixel spacing, thickness, cluster locations, cluster centers, cluster diameter and cluster area.
sapna jaiswal on 24 Apr 2017
Hi Image Analyst, I am analysing MicroCT images for various 3D representations. The final output files give values in pixels. The voxel size of my images are 1x1x1(as I can see from the image properties). Could you please advice how to convert the output areas and volumes with units as mm or micrometers? Your advise would be of great help to me. Thanks