Opening ".PIX" hyperspectral files (PCI Geomatics) in Matlab.

the multibandread function seems to misread the files (despite entering proper information). There appears to be missing (black) horizontal lines across each band and I was wondering if anyone knew the proper way to read these files without having ENVI transform it into an ENVI standard file.

here's an example of what I'm using:

A1 = multibandread('Image.pix',[2000, 2000, 90],'uint6', 0,'bip', 'ieee-be');