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MRI Forum: Scan equation I don't get, HE ...
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David Brooks

Tue. 22 Dec.09,
02:35
Scan equation I don't get, HELP
Here's the question:
The approximate scan time of a rapid spin echo sequence with a TR of 3500ms, a TE of 90ms, a 256x256 matrix, 1 exicitation, a 220mm FOV and an echo train length of 5 is______ minutes.

Formal they give is 3500msx1x256/5=?
a.3
b. 8
c. 11
d. 15

I get 179200. What am I missing in my studies and the math?
Reader Mail

Fri. 25 Dec.09,
20:37
 to make it easy convert the ms into minutes.
3500ms= 3.5 minutes (3 steps to left)
3.5*256*1= 896/60= 14.93/5 gives an answer of 2.9 or 3 minutes.
Justin Brown

Thu. 11 Feb.10,
14:59
 3500ms=3.5 seconds!
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