PURPOSE Recent association report of gadolinium contrast agents and Nephrogenic Systemic Fibrosis (NSF) diseases makes it increasing interests in using non-contrast MRA technique as an alternative [1]. Nonenhanced renal 3D MRA using time-spatial labeling inversion pulse (time-SLIP) with respiratory triggering has been optimized using the inflow technique in the axial acquisition [2,3]. However,...

The role of affordances In our opinion the model would be improved if affordance for action mechanisms were integrated: The potentiation of motor interactions consistent with the conventional use of a perceived tool (Bub et al., 2008). Affordances would easily explain the mechanism underlying the quick choice of the most appropriate tool when an action goal is given. In Figure 1A, bidirectional...

BACKGROUND AND PURPOSE A rapid and sensitive MR imaging technique would be beneficial for screening of metastatic nodes in the neck. We preliminarily evaluated the coronal MR imaging with a turbo short tau inversion recovery (STIR) sequence for that purpose. METHODS The coronal turbo STIR imaging (repetition time [TR]/echo time [TE]/inversion time [TI] = 3850 ms/20 or 80 ms/180 ms) and axial ...

The Short Tau Inversion Recovery or STIR sequence was devised by Drs Bydder and Young of the Hammersmith Hospital to enhance lesions and suppress surrounding fat (1). Experience with seventy patients studied with suspected neoplastic conditions has shown that the use of the STIR sequence increases the sensitivity of MRI scanning. It also has the potential to decrease scanning and reporting time...

BACKGROUND Inflammation plays a pivotal role in all stages of atherosclerosis. Since edema is known to be an integral part of inflammation, a noninvasive technique that can identify edema in the coronary artery wall may provide unique information regarding plaque activity. In this study, we aimed to determine whether edema induced in porcine coronary arteries by balloon injury could be reliably...

Introduction: The inversion time TI to null blood in standard dark-blood turbo-spin echo (TSE) and in STIR (short τ inversion recovery) TSE sequences depends on the patient’s heart rate and the trigger pulse used. A coarse manual adjustment so that the dark-blood (DB) preparation is played immediately after the Rwave and the TSE readout occurs during diastasis is often sufficient for nulling bl...

Beyond the scientific method: model-based inquiry as a new paradigm of preference for school science investigations. P erforming neuroimaging in the setting of a clinical trial, across multiple sites, is challenging because it involves standardizing acquisition and processing imaging protocols on multiple types of scanners by using multiple different platforms. The challenge is even more pronou...