OBJECTIVE To develop a novel method for rapid myocardial T1 mapping at high spatial resolution. METHODS The proposed strategy represents a single-shot inversion recovery experiment triggered to early diastole during a brief breath-hold. The measurement combines an adiabatic inversion pulse with a real-time readout by highly undersampled radial FLASH, iterative image reconstruction and T1 fitt...

PURPOSE To prospectively evaluate the clinical effectiveness of snapshot inversion recovery (SNAPIR), which is a dedicated optimized inversion-recovery-prepared single-shot fast spin-echo T1-weighted sequence, in the delineation of normal fetal brain anatomy compared with that of the currently used T1-weighted gradient-echo protocol, which often yields images of poor quality due to motion artif...

BACKGROUND Inversion recovery (IR) pulse sequences can generate T1-weighted images with a different range of inversion time (TI) to suppress or null the signal intensity (SI) for a specified tissue. In this study, we aimed to investigate the effect of TI values on the concentration of the contrast agent, which leads to a minimum signal intensity, using an inversion recovery T1-weighted 3-dimens...

A novel pulse sequence that enables simultaneous acquisition of T1-weighted (T1W) and T2-weighted (T2W) images is presented. In this new technique, the inversion recovery (IR) pulse of conventional fast inversion recovery (Fast IR) is replaced with a pulse train that consists of a fast spin echo (FSE) and 180 (y) +90 (x) for driven inversion (DI). By using a shorter TI and independent k-space o...

Purpose: Myocardial delayed enhancement (MDE) is commonly used to assess viability of myocardial tissue. An ECG gated, segmented inversion recovery (IR) fast gradient recalled echo (FGRE) or a steady-state free precession (SSFP) sequence is used for imaging, 15-20 minutes after administration of Gadolinium-based contrast. Multiple slices are typically acquired in successive breath-holds. Single...

Since the initial study by Nakashima et al. [1] who demonstrated that endolymphatic hydrops in patients with Ménière’s disease can be visualized using MR imaging following an intratympanic injection of gadolinium, this topic has gained strong clinical interest internationally [2–13]. The two most common sequences used in the evaluation of endolymphatic hydrops are a 3D Fluid Attenuated Inversio...

BACKGROUND Cardiovascular-MR (CMR) is the gold standard for quantifying myocardial infarction using late gadolinium enhancement (LGE) technique. Both 2D- and 3D-LGE-sequences are used in clinical practise and in clinical and experimental studies for infarct quantification. Therefore the aim of this study was to investigate if image acquisitions with 2D- and 3D-LGE show the same infarct size in ...