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MAGNETIC RESONANCE IMAGING OF THE CANINE BRAIN AT 7 T
Author(s) -
KANG BYEONGTECK,
KO KIJIN,
JANG DONGPYO,
HAN JAEYONG,
LIM CHAEYOUNG,
PARK CHUL,
YOO JONGHYUN,
KIM JUWON,
JUNG DONGIN,
KIM YOUNGBO,
WOO EUNGJE,
CHO ZANGHEE,
PARK HEEMYUNG
Publication year - 2009
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.2009.01591.x
Subject(s) - medicine , magnetic resonance imaging , artifact (error) , nuclear medicine , neuroimaging , image quality , susceptibility weighted imaging , contrast (vision) , spin echo , radiology , artificial intelligence , image (mathematics) , psychiatry , computer science
The purpose of this study was to describe relevant canine brain structures as seen on T2‐weighted images following magnetic resonance (MR) imaging at 7 T and to compare the results with imaging at 1.5 T. Imaging was performed on five healthy laboratory beagle dogs using 1.5 and 7 T clinical scanners. At 1.5 T, spin echo images were acquired, while gradient echo images were acquired at 3 T. Image quality and conspicuity of anatomic structures were evaluated qualitatively by direct comparison of the images obtained from the two different magnetic fields. The signal‐to‐nose ratio (SNR) and contrast‐to‐noise ratio (CNR) were calculated and compared between 1.5 and 7 T. The T2‐weighted images at 7 T provided good spatial and contrast resolution for the identification of clinically relevant brain anatomy; these images provided better delineation and conspicuity of the brain stem and cerebellar structures, which were difficult to unequivocally identify at 1.5 T. However, frontal and parietal lobe and the trigeminal nerve were difficult to identify at 7 T due to susceptibility artifact. The SNR and CNR of the images at 7 T were significantly increased up to 318% and 715% compared with the 1.5 T images. If some disadvantages of 7 T imaging, such as susceptibility artifacts, technical difficulties, and high cost, can be improved, 7 T clinical MR imaging could provide a good experimental and diagnostic tool for the evaluation of canine brain disorders.