Paul E Licato

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PURPOSE To compare image quality and lesion conspicuity on abdominal computed tomographic (CT) images acquired with different x-ray tube current-time products (50-200 mAs) and reconstructed with adaptive statistical iterative reconstruction (ASIR) and filtered back projection (FBP) techniques. MATERIALS AND METHODS Twenty-two patients (mean age, 60.1(More)
BACKGROUND MRI can identify patients with obstructive coronary artery disease by imaging the left ventricular myocardium during a first-pass contrast bolus in the presence and absence of pharmacologically induced myocardial hyperemia. The purpose of this multicenter dose-ranging study was to determine the minimally efficacious dose of gadopentetate(More)
OBJECTIVE To investigate the feasibility of targeting various areas of left ventricle myocardium under real time magnetic resonance (MR) imaging with a customised injection catheter equipped with a miniaturised coil. DESIGN A needle injection catheter with a mounted resonant solenoid circuit (coil) at its tip was designed and constructed. A 1.5 T MR(More)
A straightforward method for calculating maximum gradient amplitudes for the frequency-encoding, phase-encoding, and section-select functions in oblique magnetic resonance (MR) imaging is presented. The calculated amplitude values depend on the prescribed angulation and on which of the three functions are simultaneously active. The derived expressions are(More)
Introduction With the introduction of the moving-fable technique, complete assessment of the aorta and lower extremities with 3D gadoliniumenhanced MRA (3D-Gd-MRA) has become feasible by sliding the field-of-view during contrast infusion (1). Several problems of the moving-table technique arise as the diagnostic requirements from the aorta to the calves are(More)
RATIONALE AND OBJECTIVES To optimize three-dimensional gadolinium magnetic resonance angiography (3D-Gd-MRA) of the aorta and runoff vessels by addressing fundamentally different requirements for temporal and spatial resolution in a single semiautomated examination. METHODS The technique was designed to obtain pure arterial-phase 3D-Gd-MR angiograms with(More)
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