Thallium

Thallium Redistribution

Preparation
1. NPO for 4 hours prior to exam
2. Clear liquids only after injection until test is complete
Isotope administration
1. Patient will receive a 4mci Tl²⁰¹
Camera Parameters SPECT
1. LEHR collimators used for imaging
2. Matrix: 128X128
3. Zoom: 1
4. Time: 40 sec per stop
5. Views: 32
6. Rotation: counter clockwise
7. Start angle: 0
8. Degree rotation: 90
9. Detector configuration : 45
10. Orbit NCO preset
11. Mode step/shoot
12. Patient position: supine
13. Orientation: head out
Scanning protocol
1. Patient will be scanned at 15 minutes and 6 hours post injection, with the possibility of a 24 hour post injection scan.
2. Patient will empty bladder immediately before being scanned
3. All metal objects removed from chest area prior to placing patient of scanning table
4. Patient will be scanned supine position with arms above the head and scanned over the area of interest
5. 1 bed SPECT imaging will be preformed
  1. Men will have a SPECT/CT and CT imaging is used for attenuation correction.
6. SPECT/CT Reconstruction
  1. Nuclear Medicine Parameters
    1. Filtered backprojection
    2. Butterworth cutoff of .45 and order of 5