✦ LIBER ✦

Technique for retrospective respiratory and cardiac-gated phase contrast flow measurements

✍ Scribed by Ashley G Anderson; Eric M Schrauben; Kevin Johnson; Oliver Wieben

Publisher: BioMed Central
Year: 2012
Tongue: English
Weight: 392 KB
Volume: 14
Category: Article
ISSN: 1097-6647
DOI: 10.1186/1532-429x-14-s1-w26

No coin nor oath required. For personal study only.

✦ Synopsis

A technique for evaluation of respiratory impact on cardiac-gated phase contrast flow acquisitions is proposed. An example study was performed showing the effect of active respiration on CSF flow through the spinal canal.

📜 SIMILAR VOLUMES

PC-based system for retrospective cardia

PC-based system for retrospective cardiac and respiratory gating of NMR data

✍ Daryl E. Bohning; Bruce Carter; Shinshang Liu; Gerald M. Pohost 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 887 KB

## Abstract A method and a means for retrospectively clustering NMR __k__‐space measurement profiles with respect to both cardiac and respiratory phases were developed to explore strategies for (1) reducing cardiovascular and respiratory flow/motion image artifacts and (2) improving T1 and T2 chara

Comparison of cerebral artery blood flow

Comparison of cerebral artery blood flow measurements with gated cine and ungated phase-contrast techniques

✍ Dieter R. Enzmann; Michael P. Marks; Norbert J. Pelc 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 912 KB

## Abstract Cine phase‐contrast (PC) magnetic resonance (MR) pulse sequences have been used to measure blood flow in a variety of vessels. Because the cine PC sequence is time‐consuming, this prospective study was undertaken to compare it with an ungated PC technique for measuring average blood flo

A complex-difference phase-contrast tech

A complex-difference phase-contrast technique for measurement of volume flow rates

✍ Jason A. Polzin; Marcus T. Alley; Frank R. Korosec; Thomas M Gristn; Yi Wang; Ch 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 805 KB

## Abstract Magnetic resonance (MR) phase‐difference methods work well for measuring volumetric flow rates when the vessel diameter is large compared with the in‐plane voxel dimensions. For small vessels (eg, coronary arteries), partial‐volume effects introduce substantial errors in the measured vo

Accuracy of MR phase contrast velocity m

Accuracy of MR phase contrast velocity measurements for unsteady flow

✍ Richard Frayne; David A. Steinman; Brian K. Rutt; C. Ross Ethier 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 457 KB

## Abstract The accuracy of MR phase contrast (PC) velocity measurements for unsteady flow has been quantitatively assessed. Spatially resolved velocity fields were measured in a long straight tube using a gated PC technique. and the resulting MR PC velocity data were compared with velocities deriv

Hybrid dante and phase-contrast imaging

Hybrid dante and phase-contrast imaging technique for measurement of three- dimensional myocardial wall motion

✍ William H. Perman; Lawrence L. Creswell; Stephan G. Wyers; Michael J. Moulton; M 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 798 KB

Characterization of myocardial stress and strain is necessary for a complete understanding of myocardial function. The precise quantification of regional myocardial strain is complicated by its time-varying pattern and reglonal varfation resulting from the anisotropy of the myocardium and by complex

Validation of volume flow measurements w

Validation of volume flow measurements with cine phase-contrast MR imaging for peripheral arterial waveforms

✍ Thomas R. McCauley; Constantino S. Pena; Christy K. Holland; Thomas B. Price; Jo 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 680 KB

## Abstract A flow phantom was used to study MR volume flow measurements for monophasic and triphasic waveforms over the flow range expected in peripheral arteries at rest and with exercise (2–24 mL/sec, __n__ = 50). The improvement in accuracy with phase‐correction image processing to eliminate er