Nuclear Medicine Instrumentation: The Gamma Camera - Part II

These flashcards cover essential vocabulary and concepts related to Gamma Camera instrumentation and imaging techniques in nuclear medicine.

Uniformity Correction

Assesses the gamma camera’s ability to reproduce uniform activity distribution.

Non-Uniformity

Caused by PMT edge sensitivity differences, resulting in hot/cold spots and nonlinear image distortion.

Dynamic Imaging

A series of images taken sequentially to visualize physiological processes that change over time.

Count Skimming

Technique used to analyze and adjust pixel deviations during image acquisition.

Energy Correction Matrix

Aligns Z-pulse (photopeak energy) to improve energy resolution and reduce scatter.

Autotuning

Adjusts PMT gain and voltage automatically to ensure stable performance over time.

Photopeak Monitoring

Method that monitors the photopeak value at each PMT to adjust gains relative to a reference value.

Linearity Correction

Aligns X/Y spatial accuracy to correct mispositioning caused by nonlinearity of PMT response.

Collimator

A device that limits the angle of the incoming gamma rays to improve image resolution.

Sensitivity Maps

Uniformity correction maps that are created for each isotope used in the imaging department.