ABSNM NMPI case studies
ABSNM NMPI · Put your knowledge to work in context.
The ABSNM Nuclear Medicine Practitioner Instrumentation (NMPI) credential is aimed at practitioners whose work depends on understanding, operating, and troubleshooting the hardware and software behind nuclear medicine imaging rather than on clinical interpretation alone. It suits technologists, imaging scientists, physicists-in-training, service and applications specialists, and others who want independent evidence that they can reason about detectors, electronics, camera performance, acquisition and processing choices, and the quality-assurance regimes that keep a department compliant. The ABSNM NMPI case studies are 5 cases and about 1,733 words.
1Dead-Time Loss in a High-Count Rate Well Counter
A nuclear medicine department uses a well counter with a paralyzable detection system. The measured dead time is 2.5 µs.
450 words, about 2 min2Uniformity Drift on a Gamma Camera After PM
A dual-head gamma camera was just serviced (photomultiplier tube replaced in head 2). A technologist runs a daily intrinsic flood with Co-57.
374 words, about 2 min3PET Scanner Sensitivity Loss After Detector Block Replacement
A PET/CT scanner had one detector block replaced. A daily quality control scan using a cylindrical phantom shows a sensitivity of 5.2 cps/kBq, compared with a baseline of 6.8 cps/kBq (a 24% drop).
301 words, about 2 min4SPECT Reconstruction Artifact from Center of Rotation Error
A SPECT bone scan of the lumbar spine shows a subtle ring artifact and blurring that was not present on prior studies. The technologist reviews the QC log and notices that the center of rotation (COR) check was last performed 3 weeks ago and showed a COR offset of 2.5 mm; the department's tolerance is 1.5 mm.
324 words, about 2 min5Regulatory Compliance and Recordkeeping for a New Isotope
A department wants to begin using Lu-177 DOTATATE therapy. The radiation safety officer notes that the department's license currently authorizes only diagnostic isotopes.
284 words, about 1 min