A MODIFIED QUADRUPOLE GRADIENT SET FOR USE IN HIGH-RESOLUTION MRI TAGGING

Authors
ODELL WG SCHOENIGER JS BLACKBAND SJ MCVEIGH ER
Citation
Wg. Odell et al., A MODIFIED QUADRUPOLE GRADIENT SET FOR USE IN HIGH-RESOLUTION MRI TAGGING, Magnetic resonance in medicine, 32(2), 1994, pp. 246-250
Citations number
12
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
Journal title
Magnetic resonance in medicine → ACNP
ISSN journal
07403194
Volume
32
Issue
2
Year of publication
1994
Pages
246 - 250
Database
ISI
SICI code
0740-3194(1994)32:2<246:AMQGSF>2.0.ZU;2-R
Abstract
A special purpose gradient set with a Cos(2 theta) current distributio n has been constructed for high resolution MR imaging of small samples in a clinical Signa 1.5 T scanner using the existing gradient amplifi ers. The X, Y,and Z gradient coils can attain gradient field strengths of 11.3, 4.7, and 15.2 G/cm at 100 amps current, respectively, with a slew rate of 20 G/cm/ms and usable ramp time of 150 mu s. Field disto rtions are less than 2% over the central 8 cm of the bore, suitable fo r high resolution tagging of isolated canine hearts.