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Mapping an intermediate point to a slice.
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ragh...@gmail.com
May 29, 2012, 8:07:10 AM5/29/12
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I have two CT slices
1st:- Image Position: (-69.3642578125\-208.3642578125\-585), Slice Thickness: 3 mm
2nd:- Image Position: (-69.3642578125\-208.3642578125\-588), Slice Thickness: 3 mm
Now I have a point in between (-69.3642578125\-208.3642578125\-586), and I have to map it to one of the slices. To which slice should I map this point?
Should the direction of scanning be considered? if so, how to determine the scan direction?
1st:- Image Position: (-69.3642578125\-208.3642578125\-585), Slice Thickness: 3 mm
2nd:- Image Position: (-69.3642578125\-208.3642578125\-588), Slice Thickness: 3 mm
Now I have a point in between (-69.3642578125\-208.3642578125\-586), and I have to map it to one of the slices. To which slice should I map this point?
Should the direction of scanning be considered? if so, how to determine the scan direction?
Yves Martel at
Jun 3, 2012, 11:45:50 AM6/3/12
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Bonjour,
The way I see it, you have 2 slices, centered at -585, and -588. They
have a thickness of 3mm, this mean that the volume of the first slice
goes from -583.5 to -586.5, and the second from -586.5 to 589.5 (+-
1.5 mm on each side of the center).
Your point is at -586, this is squarely inside the volume of the first
slice.
If your point was at -586.5, then it would be more problematic...
Yves
The way I see it, you have 2 slices, centered at -585, and -588. They
have a thickness of 3mm, this mean that the volume of the first slice
goes from -583.5 to -586.5, and the second from -586.5 to 589.5 (+-
1.5 mm on each side of the center).
Your point is at -586, this is squarely inside the volume of the first
slice.
If your point was at -586.5, then it would be more problematic...
Yves
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