Can we read dicom files without extension using the dicomread function?

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blues
blues 2022-6-28
评论： Rik 2022-6-29
I have 71 image slices and the idea is to make an image volume using these slices. I tried using the following:
close all; clear; clc
%%
Folder = '/etc/';
filenames = fullfile(Folder,'Z*'); % files names are Z01, Z02, ....., Z75
findDir = dir(filenames);
total_Im = numel(filenames);
%%
for n = 1:total_Im
f = fullfile(Folder,filenames(n).name);
dm_images = dicomread(f);
figure(n)
imshow(dm_images)
end
% How can I read these files without extension and make a single image
% volume?

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Rik
Rik 2022-6-28
Store the read images in a 3D array. That way you will have the entire volume in one variable, allowing you to do further processing as you need to.
clear dm_images
for n = 1:total_Im
f = fullfile(Folder,filenames(n).name);
dm_images(:, :, n) = dicomread(f);
end
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blues
blues 2022-6-29
Not sure I understand - I tried to do the following but the code throws an error:
close all; clear; clc
%%
% List all files in the folder
files = dir('/etc/*');
total_Im = length(files);
%%
% Read the file names
for i = 1:total_Im
filename = files(i);
filename.name
end
%%
% Read the images in a 3D array
for i = 1:total_Im
filename = files(i);
dm_images(:, :, i) = dicomread(filename);
end
Error is here:
Reference to non-existent field 'Filename'.
Error in dicomread>newDicomread (line 184)
filename = msgname.Filename;
Error in dicomread (line 91)
[X, map, alpha, overlays] = newDicomread(msgname, frames, useVRHeuristic);
Error in testhundred (line 20)
dm_images(:, :, i) = dicomread(filename);
Any hints on this? Thank you in advance.
Rik
Rik 2022-6-29
I would suggest using the debugger to go through your code line by line. Then you would discover your first loop doesn't do anything. You would also find out that your file name variable doesn't actually contain a file name, but is instead a struct. That makes dicomread assume it is a dicominfo struct.
Folder = '/etc/';
findDir = fullfile(Folder,'*');
filenames = dir(findDir);
total_Im = length(filenames);
clear dm_images
for n = 1:total_Im
f = fullfile(Folder,filenames(n).name);
dm_images(:, :, n) = dicomread(f);
end

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