Volume-artifact reduction modality by helical CT of the anterior, middle and posterior cranial fossae. Comparison with conventional CT

Citation
U. Dorenbeck et al., Volume-artifact reduction modality by helical CT of the anterior, middle and posterior cranial fossae. Comparison with conventional CT, ROFO-F RONT, 172(4), 2000, pp. 342-345
Citations number
9
Language
TEDESCO
art.tipo
Article
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging
Journal title
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
ISSN journal
1438-9029 → ACNP
Volume
172
Issue
4
Year of publication
2000
Pages
342 - 345
Database
ISI
SICI code
1438-9029(200004)172:4<342:VRMBHC>2.0.ZU;2-Q
Abstract
Purpose: The object of this study was to determine the extent to which a ne w volume-artifact reduction (VAR) modality using helical CT was able to red uce artifacts in the anterior, middle and posterior fossae in comparison wi th conventional CT (sequential mode). Methods: In a prospective, randomized trial, 50 patients underwent helical CT (VAR) and 50 underwent sequential CT. The results were evaluated by three radiologists: influences on image q uality where scaled between 1 (no artifact) and 4 (not assessable). Eight r egions of the anterior, middle and posterior fossae were evaluated. Results : On average, artifacts were scaled at 2.5 in helical CT (VAR) and 3.1 in c onventional CT. Significant differences were seen at the eyeball, anterior to the petrosal bone, at the internal occipital crest, and at the level of the transverse sinus (p<0.005). Conclusions: Helical CT with the VAR modali ty is superior to conventional, sequential CT in the area of the anterior, middle and posterior fossae.