RT Journal Article
SR Electronic
T1 Spiral CT of the larynx.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1579
OP 1582
VO 15
IS 8
A1 J N Suojanen
A1 S K Mukherji
A1 F J Wippold
YR 1994
UL http://www.ajnr.org/content/15/8/1579.abstract
AB PURPOSE To compare conventional and spiral CT studies of the larynx. METHODS Ten patients had both conventional and spiral CT studies of the neck using 5-mm section collimation and 5-mm increments. The spiral scans also were reconstructed at 2-mm increments. Five patients had two spiral CT larynx studies with 5-mm and 2-mm collimation. Two observers independently rated the visibility of laryngeal structures and absence of motion artifact in the studies and assigned values from 1 (poor) to 4 (excellent). RESULTS The spiral scan images showed less motion artifact (1.9 versus 3.6) and better anatomic detail (2.3 versus approximately 2.6). Thinner reconstruction intervals and sections gave better anatomic detail (2.3 versus approximately 3.3). Interobserver kappa was 0.65. CONCLUSION Spiral is better than conventional CT scanning when studying the larynx.