How can i convert the chest x-ray images from JSRT database into png format?

How can i convert the chest x-ray images from JSRT database into png format?

Link for the database: http://db.jsrt.or.jp/eng.php

[Walter Roberson]

Probably fopen then fread with uint16 precision and 2048 2048 size. You might need to swapbytes() and you might need to transpose the array.

[Rida Memon]

fid = fopen('JPCLN001.img','r','b');
oneSlice = fread(fid, [2048 2048], '*uint16','b');
img = mat2gray(oneSlice, [0,4096]);
imshow(img);
fclose(fid);

I have this code for conversion. But i want to permenantly save this image. Is that possible?

[Walter Roberson]

im8 = im2uint8(img);
imwrite(im8, 'OutputFileName.png')