Back to Search
Start Over
NEMA NU 2-2000+ performance measurements on an ADAC MCD camera
- Source :
- IEEE Transactions on Nuclear Science. 48:1518-1523
- Publication Year :
- 2001
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2001.
-
Abstract
- The clinically oriented NEMA NU-2 2000+ performance standards have been performed on an ADAC molecular coincidence detection dual-head camera. At 1 cm radius, the transverse resolution full-width at half-maximum was measured to be 5.2 (10.0) mm and the axial was 5.0 (10.6) mm. At 10 cm radius, the transverse radial resolution was 4.7 (7.4) mm and the transverse tangential was 8.5 (20.9) mm. The axial resolution was 14.0 (41.1) mm. The peak true count rate was 4370 counts/s at a concentration of 4.3 kBq/ml. The peak noise equivalent count rate (NECR) was 1620 counts/s at 2.9 kBq/ml. The system scatter fraction was 48%, The maximum relative count rate error observed at the NECR peak was -42%. The sensitivity was 1010 counts/sm/rSq in the center and 870 counts/s/MBq at an offset of 10 cm. The contrast for the hot spheres ranged from 18.5 (11.6)% to 11.6 (7.9)% for a contrast ratio of 8:1 (4:1). For the cold spheres, it ranged from 41% to 25% with an overall background variability of 7%. The residual error in scatter and attenuation correction was approximately 50%. All measurements were performed at the maximum allowed crystal-to-crystal distance of 810 mm.
- Subjects :
- Physics
Nuclear and High Energy Physics
business.industry
Scatter fraction
Lateral resolution
Biomedical equipment
Noise Equivalent Count Rate
Transverse plane
Optics
Nuclear Energy and Engineering
Electrical and Electronic Engineering
Nuclear medicine
business
Image resolution
Correction for attenuation
Gamma ray detection
Subjects
Details
- ISSN :
- 15581578 and 00189499
- Volume :
- 48
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Nuclear Science
- Accession number :
- edsair.doi.dedup.....bdcc48c8d1dfb71636edb24c147d8222