plot Time-activity curve from .TAC file using Matlab

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Viktor Rogowski
Viktor Rogowski 2020-9-5
回答： Anmol Dhiman 2020-9-8
I'm new in Matlab and I have a problem with plotting a Time-activity curve from a binary file. The info I have about the file is: *.tac files are decoded like this:
  1. n (16-bit integer) number of samples of time-activity curve
  2. atot (32-bit integer) total activity injected in phantom (only needed if not simulating whole-body phantom)
  3. -deltaT (32-bit float) time-step (with negative sign) of activity concentration data that follows
  4. activity array (32-bit float) with length = n
I've linked the file in the zippyshare link: https://www99.zippyshare.com/v/uZPRrEYj/file.html
What I've done is:
P=('int16');
x = ('ieee-le');
fileID = fopen('/Users/Viktor/Documents/Marbete/female_pat117/v1/c1.tac');
A = fread(fileID, P , x);
fclose(fileID);
and I dont know how to continue from this point.
Regards Viktor

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回答（1 个）

Anmol Dhiman
Anmol Dhiman 2020-9-8
Hi Viktor,
I am afraid we cannot open .tac file in MATLAB. You can extract the 4 variables mentioned above from third party software and can use MATLAB for plotting them.
Regards,
Anmol Dhiman

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