INTRODUCTION: In clinical 3D Dynamic Contrast-Enhanced MRI (DCE-MRI) of the abdomen, multiple phases of perfusion (pre-contrast, arterial, venous, delayed phases) are captured subsequently in breath-hold scans. Novel imaging and reconstruction techniques such as GRASP promise DCEMRI at a temporal resolution of only few seconds from a single, continuous image acquisition. This reduces the requir...

Background Measurement of myocardial extracellular volume fraction (ECV) with T1 mapping cardiac magnetic resonance (CMR) before and after the application of a gadolinium-based extracellular contrast agent enables the assessment of diffuse myocardial fibrosis. The equilibrium between blood and myocardium contrast concentration required for ECV measurements can be achieved with a primed contrast...

the objective of the present study was to investigate the effects of a sustained-release multi-trace element ruminal bolus on sex ratio, the reproductive performance and lambs growth of afshari ewes. eighty afshari cycling ewes during breeding season were used in the trial. the animals were synchronized using cidr for 14 days and assigned into 4 groups including: group 1 (n=20) received a singl...

published data on the effects of ruminal bolus on the number of ovulatory follicles in ewes does not exist. the present study determined the effects of a ruminal bolus on trace element status, follicular dynamics and reproductive performance in ewes. eighty afshari cycling ewes were synchronized during breeding season using cidr for 14 days and assigned to 4 groups (n=20); group 1 received a si...

PURPOSE Quantification of perfusion measurements using dynamic, susceptibility-weighted contrast-enhanced (DSC) MRI depends on estimating the size and shape of the tracer bolus. Typically, the bolus is described as a gamma variate function (GV) fitted to the bolus portion of tracer concentration time curve (CTC). However, the last point to fit is arbitrary which can lead to considerable variati...

Injection laryngoplasty is a common operative technique used in the management of unilateral vocal fold paralysis. Cymetra is a micronized particulate injectable form of acellular human dermis that is commonly used for vocal cord medialization procedures. We report migration of an intracordal bolus of Cymetra into the medial wall of the pyriform sinus. Histopathology from endoscopic resection o...

1. Glucose kinetics were assessed in seven normal adult male subjects by an intravenous bolus technique with the use of a non-radioactive isotopically labelled preparation, [6,6-2H]glucose, as tracer. Tracer enrichment in plasma was assessed by gas chromatography-mass spectrometry. For comparison five subjects also received a simultaneous intravenous bolus of [6-3H]glucose and kinetics were ass...