Find aggrement for Classification problem between 5 raters

Hi,

I have 5 radiologists who classified tumors in 3 stages (Stage 1, Stage 2, Stage 3). They did the classification manually putting numbers 1 = Stage 1 , 2 = Stage 2 and 3 = Stage 3 on each region. Each patient has about 10-14 tumors. For each patient I want to see how many tumors they classified the same. How can I do that?

Answer 1

[KALYAN ACHARJYA]

Then count the number of tumors, in the result image

[DM]

The images are in .png format. How can I use that?

[KALYAN ACHARJYA]

load the images imread

[DM]

I used the imread to load the images as you suggested.

Then I used the and function but I got the following error:

im1 = imread('im1.png');
im2 = imread('im2.png');
im3 = imread('im3.png');
im4 = imread('im4.png');
im5 = imread('im5.png');

and(im1,im2,im3,im4,im5)

Error using &

Too many input arguments.

Did I use the and function wrongly?