Suppression of ghost artifacts arising from long T species in segmented inversion-recovery imaging.

Purpose: We demonstrate an improved segmented inversion-recovery sequence that suppresses ghost artifacts arising from tissues with long T ( > 1.5 s).

Theory And Methods: Long T species such as pericardial fluid can create bright ghost artifacts in segmented, inversion-recovery MRI because of oscillations in longitudinal magnetization between segments.

Ambulatory cardiac single-photon emission computed tomography at the primary care physician's office: a descriptive study.

Ambulatory cardiac single-photon emission computed tomography stress testing for the evaluation of coronary artery disease at the primary care physician's office is increasingly utilized without data supporting its safety. In this 2-year prospective pilot study of 1266 consecutive stress-myocardial perfusion imaging studies done in the primary care physician's office using a mobile nuclear cardiology laboratory, adverse events were mild and rare. There were no recorded events of myocardial infarction, serious arrhythmias, severe bronchospasm, hospitalization, or death.