how to convert a 3D volume DCM image to png format

How to convert a 3D volume DCM image to png format. That is, a medical image that contains several slices.

[Walter Roberson]

Do you want the slices to be individually converted? Do you want to do a volume rendering and save the rendered image? Do you want to do some kind of detection on the volume and draw the outside shell of an portion?

[Estefania Ruiz Muñoz]

@Walter Roberson I want the slices to be converted to png individually

Answer 1

[VINAYAK LUHA]

Hi Estefania,

It is my understanding that you would like to know how to extract individual slices from a 3D volume DCM image as “.png” files.

Assuming that you have a 4-D volume from set of DICOM images which can be created from dicom images using the “dicomreadVolume” function.

Here’s a possible workaround-

dicomVolume = dicomreadVolume('path to dicom folder'); 
numSlices = size(dicomVolume, 4) 
for i=1:numSlices 
    slice = dicomVolume(:,:,i); 
    normalizedSlice = mat2gray(slice);  
    imwrite(normalizedSlice,"path to save folder"+"slice"+num2str(i)+".png"); 
end 

Explore the following documentations for more details-

“dicomreadVolume” function https://www.mathworks.com/help/images/ref/dicomreadvolume.html

Regards,

Vinayak Luha