✦ LIBER ✦

Maximizing signal-to-noise and contrast-to-noise ratios in spin-echo imaging using non-standard flip angles

✍ Scribed by Terrence J. Provost; R.Edward Hendrick

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 193 KB
Volume: 4
Category: Article
ISSN: 0730-725X
DOI: 10.1016/0730-725x(86)90916-1

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Optimization of signal-to-noise ratio in

Optimization of signal-to-noise ratio in calculated T1 images derived from two spin-echo images

✍ F. S. Prato; D. J. Drost; T. Keys; P. Laxon; B. Comissiong; E. Sestini 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 572 KB

A simplified model relating signal intensity in an MR image to spin-lattice relaxation time (T1), repetition time (TR), number of signal averages and the average tip angle (-alpha) of the protons within the slice has been developed. This model has been used to select the optimal repetition times of

Maximizing contrast-to-noise ratio in ul

Maximizing contrast-to-noise ratio in ultra-high resolution peripheral MR angiography using a blood pool agent and parallel imaging

✍ Maisie S. Wang; David R. Haynor; Gregory J. Wilson; Tim Leiner; Jeffrey H. Maki 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 554 KB

## Abstract ## Purpose To determine sequence parameters that maximize vascular contrast‐to‐noise (CNR) for ultra‐high resolution equilibrium phase (EP) peripheral imaging for the blood pool agent (BPA) Vasovist. ## Materials and Methods A model for maximizing CNR in EP MR angiography (MRA) is pr

Perfusion imaging using spin-labeling me

Perfusion imaging using spin-labeling methods: Contrast- to-noise comparison in functional MRI applications

✍ Christine Preibisch; Axel Haase 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 357 KB

In this study the performance of FLASH imaging with selective inversion preparation for functional perfusion studies was investigated. In addition to the absolute quantification of perfusion by measurement of the longitudinal relaxation times with global (T(1glob)) and selective (T(1sel)) inversion,

Signal-to-noise ratio and spectral linew

Signal-to-noise ratio and spectral linewidth improvements between 1.5 and 7 Tesla in proton echo-planar spectroscopic imaging

✍ Ricardo Otazo; Bryon Mueller; Kamil Ugurbil; Lawrence Wald; Stefan Posse 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 831 KB

## Abstract This study characterizes gains in sensitivity and spectral resolution of proton echo‐planar spectroscopic imaging (PEPSI) with increasing magnetic field strength (__B__~0~). Signal‐to‐noise ratio (SNR) per unit volume and unit time, and intrinsic linewidth (LW) of N‐acetyl‐aspartate (NA

Dependence of contrast to noise ratio be

Dependence of contrast to noise ratio between ablation scar and other tissues on patient heart rate and flip angle for late gadolinium enhancement imaging of the left atrium

✍ Sathya Vijayakumar; Eugene Kholmovski; Christopher McGann; Nassir F Marrouche 📂 Article 📅 2012 🏛 BioMed Central 🌐 English ⚖ 135 KB

Functional MRI using multiple receiver c

Functional MRI using multiple receiver coils: BOLD signal changes and signal-to-noise ratio for three-dimensional-PRESTO vs. single shot EPI in comparison to a standard quadrature head coil

✍ Volker Hesselmann; Ralf Girnus; Christoph Wedekind; Stefan Hunsche; Juergen Bunk 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 556 KB

## Purpose: To compare the performance of single shot echo planar imaging (ssepi) with three-dimensional-multishot echo-planar imaging (epi) based on principles-of-echo-shifting-with-a-train-of-observations (presto) in combination with a standard quadrature head coil and, as an alternative, a multi