SBIR/STTR Research Award
Attenuation Correction in Positron Emission Tomography
Award amount
$517,215Program and phase
SBIR · Phase IIAward year
1995Award details
- Awarding agency
- Department of Health and Human Services
- Branch
- Not reported
- Recipient company
- UGM MEDICAL SYSTEMS, INC.
- Proposal award date
- Not reported
- Contract end date
- Not reported
- UEI
- Not reported
- Solicitation number
- Not reported
- Topic code
- Not reported
Research abstract
Attenuation correction in positron emission tomography (PET) is usually achieved using a transmission scan, which is typically performed with one or several rotating rod sources containing a positron emitter such as Ge-68. Since good statistics is required in the transmission scan, the imaging time is typically 10 to 20 minutes and the activity in the rod sources is as high as the scanner countrate capability permits. We will perform the transmission scan with singles gamma-ray emitter with an energy which is somewhat higher than 511 keV; therefore, the energy discrimination can be used to separate its energy from that of a positron emitter. This transmission source is shielded towards the nearer detector; this allows higher levels of activity to be used with the aim of reducing the total transmission time while still obtaining adequate statistical accuracy.
Technology keywords
Not reported