Why do I get different solutions using uigetfile and path strings?

How does uigetfile operate? Does the second prompt overwrite the first one?

I have the following code and I want to use the commented part instead of the path strings. However while using uigetfile I don't get the wanted solution.

The rzFactor should be 1.4 and that is what i get using the path strings. Using uigetfile I just get 1.0 as the solution. How does uigetfile operate? Does the second prompt overwrite the first one?

% Open and read CT and CBCT DICOM file
% Shows all files with a .dcm extension
% inputCT_File = msgbox('Please select planning CT file in DICOM format.')
% FileName_CT = uigetfile('.dcm')
% 
% 
% inputCBCT_File = msgbox('Please select Cone Beam-CT file in DICOM format.')
% FileName_CBCT = uigetfile('.dcm')

FileName_CT = 'C:\Users\Deniz\Desktop\Uni\Semester 7\Bachhelor_Arbeit\Codes_24012022\Kopf\CT\CT.#_STR_IMG.Bild 10.dcm';
FileName_CBCT = 'C:\Users\Deniz\Desktop\Uni\Semester 7\Bachhelor_Arbeit\Codes_24012022\Kopf\CBCT\CT.#_STR_IMG.Bild 10.dcm';


% Get information of .dcm file
info_CT = dicominfo(FileName_CT);
info_CBCT = dicominfo(FileName_CBCT);

vz_CT = info_CT.PixelSpacing;
vz_CBCT = info_CBCT.PixelSpacing;

rzFactor = vz_CT(1)/vz_CBCT(1)

Answer 1

[Walter Roberson]

you should be using the two-output form of uigetfile, then fullfile() to create a complete path.