Get singular sagittal slice from nifti file saved as axial slices

Question

Malik Ali about 20 hours 前

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2140611-get-singular-sagittal-slice-from-nifti-file-saved-as-axial-slices

回答： Walter Roberson about 17 hours 前

Hello, with the following code i'm able to retrieve a single axial slice from this nifti file of a lung CT scan. I would like to know how to be able to save a slice from another view, such as sagittal or coronal in a separate image format such at png or jpg for image processing.

L1 = load_nii('lung_029.nii');
NumSlices = size(L1.img,3)
S = L1.img(:,:,125);
figure
imshow(S)

I'm using the image processing toolbox and tools for nifti and analyze image add ons.

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Answer 1

Walter Roberson about 17 hours 前

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2140611-get-singular-sagittal-slice-from-nifti-file-saved-as-axial-slices#answer_1491271

在 MATLAB Online 中打开

Example

L1 = load_nii('lung_029.nii');
S = size(L1.img);
r1 = randi(S(1));
r2 = randi(S(2));
r3 = randi(S(3));
view1 = reshape(L1.img(r1,:,:), S(2), S(3));
view2 = reshape(L1.img(:,r2,:), S(1), S(3));
view3 = reshape(L1.img(:,:,r3), S(1), S(2));
imwrite(view1, 'view1.png');
imwrite(view2, 'view2.png');
imwrite(view3, 'view3.png');

I should note, though, that most of the time you do not need to save the extracted data into an image file in order to process it; most of the time you can just use the arrays (view1, view2, view3) directly.