Anatomic MR images obtained with silent sequences.
The authors evaluated silent magnetic resonance (MR) imaging sequences for their suitability in providing high-spatial-resolution anatomic images that are of sufficient quality to be useful in a clinical setting. The authors compared the images obtained with a silent rapid acquisition with relaxation enhancement (RARE) sequence to its standard counterpart with respect to signal-to-noise ratio, distribution of gray level, and spatial resolution. No real differences were observed between the standard and the silent RARE MR images. Anatomic images were also acquired with a silent spin-echo sequence. Acoustic noise levels with the silent sequences were at least 22 dB (A-weighted scale) lower than those with standard sequences, without loss of image quality.
Girard
F
F
Department of Magnetic Resonance, University Children's Hospital Zurich, Switzerland. frank.girard@kispi_unizh.ch
Marcar
V L
VL
Hennel
F
F
Martin
E
E
D000328:Adult; D016477:Artifacts; D001921:Brain / Q000033:anatomy & histology*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009622:Noise / Q000517:prevention & control*; D012016:Reference Values; D012680:Sensitivity and Specificity