The purposes of our study were to investigate the benefits of using a single dose of an extracellular contrast agent for coronary magnetic resonance angiography (CMRA) and to determine the relative benefits of arterial-phase vs. delayed-phase image acquisition. The right coronary artery was imaged in 10 healthy adults using a breath-hold, two-dimensional fast gradient echo pulse sequence design...

Background When imaging the airway by MRI, the traditional technique turbo spin echo (TSE) results in high quality 2D images of the airway. However, planning and acquisition times are often lengthy. An alternative technique for airway image acquisition, delayed volume interpolated breath hold examination or VIBE, is a 3D gradient echo technique that produces high spatial resolution imaging of t...

OBJECTIVES The aim of the study was to compare the diagnostic performance of early-phase I-metaiodobenzylguanidine (MIBG) scintigraphy with that of delayed-phase imaging in Lewy body disease (LBD). METHODS A retrospective cohort study of ¹²³I-MIBG scintigraphy was carried out in 192 patients who were suspected of having LBD. Clinical diagnosis was obtained using the UK Parkinson's Disease Bra...

Overview: In this lecture, I will provide an overview of the different available gadolinium-based contrast agents, with specific attention on dynamic contrast enhanced imaging and delayed hepatobiliary phase imaging. The dual blood supply of the liver will be reviewed and its importance on understanding the detection and characterization of focal liver lesions. The behavior of the dual blood su...

Overview: In this lecture, I will provide an overview of the different available gadolinium-based contrast agents, with specific attention on dynamic contrast enhanced imaging and delayed hepatobiliary phase imaging. The dual blood supply of the liver will be reviewed and its importance on understanding the detection and characterization of focal liver lesions. The behavior of the dual blood su...

J.C. Sillery D.R. DeLone K.M. Welker SUMMARY: We have encountered 2 cases of parathyroid adenomas that are atypical because of their large size, cystic character, and faint enhancement compared with the typical solid parathyroid adenomas. Specifically, the enhancement pattern of a typical parathyroid adenoma in a multiphasic scan demonstrates rapid arterial enhancement and rapid washout on dela...