Collimator Interchange System for Adaptive Cardiac Imaging in C-SPECT.

Area of Science:

• Medical Imaging
• Nuclear Medicine
• Cardiovascular Imaging

Background:

• Conventional cardiac SPECT systems have limitations in performance.
• Dedicated cardiac SPECT systems require precise heart localization within a small field of view (FOV).
• Optimizing SPECT performance necessitates adaptable imaging configurations and collimators for diverse patient populations.

Purpose of the Study:

• To develop a system for rapid and precise collimator exchange in cardiac SPECT.
• To enable adaptive imaging configurations without moving the patient.
• To enhance the performance and clinical utility of cardiac SPECT.

Main Methods:

• Development of a slit exchange system for the slit-slat collimator of the C-SPECT cardiac platform.
• Implementation of a precision link conveyor with a body-contouring path.
• Integration of four distinct transaxial collimation options with rapid exchange capability (10 seconds).

Main Results:

• The developed system allows collimator exchange in 10 seconds without disturbing the patient.
• Positioning precision for all system elements is within 0.1 mm.
• The system demonstrated high durability with no performance degradation over 100,000 revolutions.

Conclusions:

• The rapid and precise collimator exchange system enables adaptive clinical SPECT imaging.
• This technological advancement is crucial for optimizing cardiac SPECT performance across various patient groups and imaging tasks.
• The system represents a significant step forward for dedicated cardiac SPECT platforms.