ABSNM NMPI study guide
ABSNM NMPI · Work through your exam, one topic at a time.
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 study guide has 6 sections and about 1,627 words.
01Basic Instrumentation Principles and Electronics
Every counting system rests on a few electrical ideas. Current is charge flow (ampere); voltage is potential difference driving it; resistance opposes it (Ohm's law, V = IR).
324 words, about 2 min02Radiation Detection and Counting Systems
Detectors convert radiation into measurable signal. Gas-filled detectors operate in ionization, proportional, or Geiger–Müller regions depending on applied voltage; the Geiger plateau is the voltage range where count rate is nearly voltage-independent.
279 words, about 1 min03Gamma Camera Components and Operation
A gamma camera comprises a collimator , scintillation crystal (typically NaI(Tl)), light guide , PMT array , and positioning/energy circuitry . The collimator defines spatial resolution and sensitivity: parallel-hole (most common), pinhole (magnification, small organs), converging/diverging, and slant-hole.
259 words, about 1 min04Image Acquisition, Processing, and Quality Control
Acquisition modes include static , dynamic , gated , whole-body , and SPECT . Matrix size and zoom determine pixel size; pixel size = field of view / matrix size (adjust for zoom).
261 words, about 1 min05Emission Tomography (SPECT and PET) Instrumentation
SPECT uses a rotating gamma camera (or multi-head systems) with collimators; reconstruction is filtered back-projection (FBP) or iterative (OSEM). Attenuation correction may use a transmission source or CT.
248 words, about 1 min06Instrumentation Quality Assurance and Regulatory Compliance
QA programs ensure instrumentation performs within specifications. Daily checks typically include energy peaking, flood uniformity, and background.
256 words, about 1 min