相关！

老师，你好！遇到一些问题，请帮忙！
我做的是治疗前后REHO的变化。对治疗前与治疗后的REHO用REST做了配对T检验，得到有差异的脑区共12个。我想做一下这些差异脑区与临床症状的关系：rest-slice viewer-save cluster。保存了12个ROI的MASK。然后用每个病人的REHO图分别与这12个MASK进行相乘(rest Image calculator做)，共相乘了12次，每个ROI一次。每个ROI得到一组output.image.再把每个ROI的output.image与临床症状评分做相关（text文件），用rest correlation analysis做的，结果报错！报错如下：

Image Files in the Group:
output00001.img
output00002.img
output00003.img
output00004.img
output00005.img
output00006.img
output00007.img
output00008.img
output00009.img
output00010.img
output00011.img
output00012.img
output00013.img
output00014.img
output00015.img
output00016.img
output00017.img
output00018.img
output00019.img
output00020.img
output00021.img
output00022.img
output00023.img
output00024.img
output00025.img
output00026.img
output00027.img
output00028.img
output00029.img
output00030.img
output00031.img
output00032.img
output00033.img
output00034.img
output00035.img
output00036.img
output00037.img
output00038.img
output00039.img
output00040.img
output00041.img
output00042.img
output00043.img
output00044.img
output00045.img
output00046.img
output00047.img
output00048.img

Correlation Calculating...
..........??? Error using ==> corrcoef
The lengths of X and Y must match.

Error in ==> rest_corr_Image at 80
[r p]=corrcoef(DependentVariable,SeedSeries);

Error in ==> rest_corr_gui>btnCompute_Callback at 143
rest_corr_Image(DependentDirs,SeedSeries,OutputName,...

Error in ==> gui_mainfcn at 75
feval(varargin{:});

Error in ==> rest_corr_gui at 28
gui_mainfcn(gui_State, varargin{:});

??? Error using ==> rest_corr_gui('btnCompute_Callback',gcbo,[],guidata(gcbo))
Error using ==> corrcoef
The lengths of X and Y must match.

??? Error while evaluating uicontrol Callback