How to read file obtained from treatment planning system(TPS)? The file is in format of RTP#####.

The file is in format of RTP##### contains 2D dose distribution of a patient. How to read the data from the file using MATLAB. I have tried to use the following commands but the result seems weird

fid=fopen('RTP00001','r');
A=fread(fid);
A

[Walter Roberson]

I have having difficulty finding details. It appears that possibly RTP is IMPAC RTP-Connect format or RTP-Exchange format. I do not find much information about RTP-Exchange. For RTP-Connect I find some Ruby software that might read them -- and some commercial systems. But I also find one place that indicates the files are in CSV format; if so then xlsread() or textread() would seem appropriate.

We would need to see a bit of a sample.