如何在matlab中求解索引超矩阵维数？

我正在尝试从名为series 8的文件夹中读取一系列dicom图像。下面是从特定文件夹中读取一系列dicom图像的代码。我在

info=dicominfo（fullfile（fileFolder，fileNames{1}））

处得到的错误索引超过了矩阵维数

---

下面是两个可以做到这一点的选项。首先，围绕整个方法创建一个循环，当没有dcm文件时，由于文件名为零，循环将不会执行。第二个选项测试文件是否为空，如果为空，则不执行

clear all;
close all;
clc;
fileFolder = fullfile(pwd, 'series 8');
files = dir ( fullfile (fileFolder, '*.dcm'));
fileNames = {files.name};

%examine file header (metadata , from dicom stack)

for i=length(fileNames):-1:1
   if (i == 1)
       info = dicominfo(fullfile(fileFolder,fileNames{i}));

       %extract size info from metadata
       voxelsize = [info.PixelSpacing;info.SliceThickness];

       %read one file to get size
       I = dicomread(fullfile(fileFolder,fileNames{i}));
       classI = class(I);
       sizeI = size(I);
       numImages = length(fileNames);

       %read slice images populate 3d matrix
       hWaitBar = waitbar(0,'reading dicom files');

       %create array
       mri= zeroes(info.rows , info.columns , numImages , classI );
   else
       fname = fullfile(fileFolder, fileNames{i});
       mri(:,:,i) = unit16(dicomread(fname));
       waitbar((length(fileNames)-i+1)/length(fileNames))
   end
end
delete(hWaitBar);

第二

clear all;
close all;
clc;
fileFolder = fullfile(pwd, 'series 8');
files = dir ( fullfile (fileFolder, '*.dcm'));
fileNames = {files.name};

%examine file header (metadata , from dicom stack)
if ~isempty(files)
    info = dicominfo(fullfile(fileFolder,fileNames{1}))

    %extract size info from metadata
    voxelsize = [info.PixelSpacing;info.SliceThickness];

    %read one file to get size
    I = dicomread(fullfile(fileFolder,fileNames{1}))
    classI = class(I);
    sizeI = size(I);
    numImages = length(fileNames);

    %read slice images populate 3d matrix
    hWaitBar = waitbar(0,'reading dicom files');

    %create array
    mri= zeroes(info.rows , info.columns , numImages , classI )
    for i=length(fileNames):-1:1
        fname = fullfile(fileFolder, fileNames{i});
        mri(:,:,i) = unit16(dicomread(fname));
        waitbar((length(fileNames)-i+1)/length(fileNames))
    end

    delete(hWaitBar);
end

---

您可以通过确保索引不超过矩阵维度（可能是

fileNames{i}

part）来解决此问题。我只在info=dicominfo（fullfile（fileFolder，fileNames{1}））开始时出错而且不在循环中。您是否检查过以确保

文件名

不只是空的？@Dan我现在在series8文件夹中有dicom文件？我如何检查文件名不为空？？

clear all;
close all;
clc;
fileFolder = fullfile(pwd, 'series 8');
files = dir ( fullfile (fileFolder, '*.dcm'));
fileNames = {files.name};

%examine file header (metadata , from dicom stack)
if ~isempty(files)
    info = dicominfo(fullfile(fileFolder,fileNames{1}))

    %extract size info from metadata
    voxelsize = [info.PixelSpacing;info.SliceThickness];

    %read one file to get size
    I = dicomread(fullfile(fileFolder,fileNames{1}))
    classI = class(I);
    sizeI = size(I);
    numImages = length(fileNames);

    %read slice images populate 3d matrix
    hWaitBar = waitbar(0,'reading dicom files');

    %create array
    mri= zeroes(info.rows , info.columns , numImages , classI )
    for i=length(fileNames):-1:1
        fname = fullfile(fileFolder, fileNames{i});
        mri(:,:,i) = unit16(dicomread(fname));
        waitbar((length(fileNames)-i+1)/length(fileNames))
    end

    delete(hWaitBar);
end