[Short tau inversion recovery fat suppression in T2-weighted turbo spin echo-MRI of malignancies of the mouth and oropharynx].
BACKGROUND
T1-weighted sequences before and after the application of contrast medium and T2-weighted sequences are used for magnetic resonance imaging of malignomas of the oral cavity and the oropharynx. The authors studied the utility of short tau inversion recovery fat suppression (STIR) in T2-weighted turbo spin echo sequences (TSE).


METHODS
Twenty patients with malignomas of the oral cavity and oropharynx were examined on a 1.0 Tesla magnetom using T2-weighted TSE-sequences with and without STIR as well as T1-weighted spin echo sequences before and after the application of contrast medium.


RESULTS
STIR was successfull in all patients. STIR worsened the signal-noise-ratio significantly, but improved tumor delineation compared to T2-TSE without fat suppression in 75% according to three different investigators.


CONCLUSIONS
The STIR technique is beneficial for the progress in diagnostic imaging of cancer of the oral cavity and oropharynx.
Dreher
A
A
Klinik und Poliklinik für Hals-, Nasen- und Ohrenkranke, Ludwig-Maximilians-Universität München.
Muller-Lisse
G U
GU
Kretschmar
U L
UL
Jager
L J
LJ
Grevers
G
G
D000273:Adipose Tissue / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016477:Artifacts; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D017352:Echo-Planar Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000175:diagnosis*; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis; D009959:Oropharyngeal Neoplasms / Q000175:diagnosis*