b) with a gamma camera
Detection is more efficient, with optimal image resolution.
Two types of collimators are used :
- pinhole collimator: low sensitivity but enlarged images
- parallel collimator: high sensitivity but small-sized images.
a) with a rectilinear scanner
- Life-sized projection images.
- Anatomical positioning by the physician is facilited.
b) with a gamma camera
Detection is more efficient, with optimal image resolution.
Two types of collimators are used :
- pinhole collimator: low sensitivity but enlarged images
- parallel collimator: high sensitivity but small-sized images.
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| Pinhole collimator | Parallel collimator |
