AAPM/RSNA physics tutorial for residents: Physics of cardiac imaging with multiple-row detector CT

Mahadevappa Mahesh, Dianna D. Cody

Research output: Contribution to journalReview articlepeer-review

Abstract

Cardiac imaging with multiple-row detector computed tomography (CT) has become possible due to rapid advances in CT technologies. Images with high temporal and spatial resolution can be obtained with multiple-row detector CT scanners; however, the radiation dose associated with cardiac imaging is high. Understanding the physics of cardiac imaging with multiple-row detector CT scanners allows optimization of cardiac CT protocols in terms of image quality and radiation dose. Knowledge of the trade-offs between various scan parameters that affect image quality - such as temporal resolution, spatial resolution, and pitch - is the key to optimized cardiac CT protocols, which can minimize the radiation risks associated with these studies. Factors affecting temporal resolution include gantry rotation time, acquisition mode, and reconstruction method; factors affecting spatial resolution include detector size and reconstruction interval. Cardiac CT has the potential to become a reliable tool for noninvasive diagnosis and prevention of cardiac and coronary artery disease.

Original languageEnglish (US)
Pages (from-to)1495-1509
Number of pages15
JournalRadiographics
Volume27
Issue number5
DOIs
StatePublished - Sep 1 2007

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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