PT  - JOURNAL ARTICLE
AU  - M Suzuki
AU  - T Takashima
AU  - M Kadoya
AU  - S Takahashi
AU  - S Miyayama
AU  - S Taira
TI  - MR imaging of olfactory bulbs and tracts.
DP  - 1989 Sep 01
TA  - American Journal of Neuroradiology
PG  - 955--957
VI  - 10
IP  - 5
4099  - http://www.ajnr.org/content/10/5/955.short
4100  - http://www.ajnr.org/content/10/5/955.full
SO  - Am. J. Neuroradiol.1989 Sep 01; 10
AB  - Olfactory bulbs are easily detected on coronal T1-weighted MR images. They are situated almost symmetrically opposite either side of the lower end of the olfactory sulci, and, on sagittal images, they are observed as thin soft-tissue bands immediately beneath the frontal lobe base. On axial images they are shown as oval, paramedian structures of intermediate intensity. Visualization of the olfactory tract, however, is not always possible. Our study reveals that, on axial images, detection of the olfactory bulb depends on technical factors; we recommend a 256 x 256 matrix, a 3-mm-thick slice, and less than a 0.6-mm gap. Despite the lack of complete visualization of olfactory bulbs and tracts, MR may be effective in demonstrating diseases of these entities.