Tag Archives: gating

ECG Cable Set
4
Feb

Overview

ECG cable sets connect patients to monitors for cardiac rhythm and gating during imaging. High quality leads reduce noise and improve signal fidelity. MRI conditional leads are required for safe use in the MRI environment.

Lead Types and Placement

Standard 3 lead 5 lead and 12 lead configurations support different monitoring needs. Proper skin preparation and electrode placement optimize signal quality. Gating for cardiac CT and MRI relies on accurate ECG signals.

Maintenance and Infection Control

Cables and electrodes require cleaning and replacement according to protocols. Damaged cables increase artifact risk and should be removed from service. Inventory management ensures availability for scheduled procedures.

Compatibility

Cable connectors must match monitor and scanner interfaces for gating and recording. MRI compatible leads use non ferromagnetic materials and special connectors. Verification testing ensures safe operation in modality specific environments.

SPECT System
4
Feb

Overview

SPECT acquires multiple projections around the patient to reconstruct three dimensional functional images. It is used for cardiac bone and brain studies among others. SPECT provides tomographic functional assessment complementary to PET.

Acquisition Protocols

Protocols include rotation speed projection count and energy window settings. Gating and motion correction improve cardiac and respiratory studies. Optimization balances image quality and scan time.

Reconstruction Algorithms

Iterative reconstruction and resolution recovery enhance image quality and quantification. Attenuation and scatter correction improve accuracy. Vendor specific algorithms require validation for clinical use.

Clinical Applications

SPECT is widely used for myocardial perfusion bone scans and infection imaging. Hybrid SPECT CT adds anatomic detail for localization. Quantitative SPECT is expanding with improved reconstruction methods.

Cardiac CT Coronary CTA
4
Feb

Overview

Coronary CTA noninvasively visualizes coronary artery stenosis plaque morphology and cardiac anatomy with ECG gating to reduce motion.

Technique

ECG gating heart rate control and contrast timing are essential for diagnostic coronary imaging.

Clinical Uses

Coronary artery disease assessment calcium scoring and preoperative planning for structural interventions.

Limitations and Safety

Radiation and contrast exposure. Heart rate control and patient selection affect image quality.