Converting Mat file to Dicom file

Hi , I have a mat file including 320 slices of CT image and I am trying to convert them to dicom file using the codes below:

load Reconimg.mat;

size(img) % e.g. if size dimensions = 125x125x320

for image_num = 1:320
dicomwrite(img(1:512,1:512,image_num));
sprintf('Reconimg%s.dcm',num2str(image_num));
end

but I get the following error

Error using dicomwrite (line 178)
At least two input arguments required.

could u please advise

Thanks

Answer 1

[Jorge Mario Guerra González]

for image_num = 1:320 
  dicomwrite(img(1:512,1:512,image_num),FILENAME); 
  sprintf('Reconimg%s.dcm',num2str(image_num)); 
end

you forgot to put the filename argument.

use

 help dicomwrite

for more information

[Hany]

Thanks Jorge,

I choose the fimenamr Reconimg and it tells me that it has to be string! Could u please advise

[Jorge Mario Guerra González]

filename=strcat('reconimg',str2num(image_num),'.dcm'); 
dicomwrite(img(1:512,1:512,image_num),filename);

Dont forget to the name into the quotation marks...this things ' ...'

That should work if you put it into the loop

[Hany]

thanks Now I get this error

Error using str2num (line 33) Requires string or character array input.

[Jorge Mario Guerra González]

sorry I didn't write it well it's

filename=strcat('reconimg',num2str(image_num),'.dcm'); 
dicomwrite(img(1:512,1:512,image_num),filename);

the whole code should be

for image_num = 1:320 
filename=strcat('reconimg',num2str(image_num),'.dcm'); 
dicomwrite(img(1:512,1:512,image_num),filename); 
sprintf('Reconimg%s.dcm',num2str(image_num)); %you can delete this if you   want
end

[Hany]

Thanks , so turned out the mat file should be the int16 in order for the dicomwrite to work , so here is how it works:

for image_num = 1:320 filename=strcat('Reconimg',num2str(image_num),'.dcm'); B=int16(Reconimg(:,:,image_num)); %dicomwrite(Reconimg(1:512,1:512,image_num),filename); dicomwrite(B,filename); sprintf('Reconimg%s.dcm',num2str(image_num)); %you can delete this if you want end

Answer 2

[Hany]

Thanks , so turned out the mat file should be the int16 in order for the dicomwrite to work , so here is how it works:

for image_num = 1:320 filename=strcat('Reconimg',num2str(image_num),'.dcm'); B=int16(Reconimg(:,:,image_num)); %dicomwrite(Reconimg(1:512,1:512,image_num),filename); dicomwrite(B,filename); sprintf('Reconimg%s.dcm',num2str(image_num)); %you can delete this if you want end

[Santiago Romaniolli]

Hi Hany, where do you define the variable Reconimg? Because I am having trouble with these sentence: B=int16(Reconimg(:,:,image_num)); Undefined function or variable 'Reconimg'.