[Rational CT diagnosis before operations on the paranasal sinuses].
Movement or metal artefacts as well as the relatively high radiation exposure of both the axial and the coronal scan are disadvantages of computed tomography. A single spiral CT scan with a secondary reformation replacing the second CT scan might solve these problems. The goal of this project was to compare the diagnostic value of primary spiral CT scans of paranasal sinuses with secondary reformations. These were evaluated by ENT surgeons as well as radiologists. We performed axial and coronal spiral-CT's of paranasal sinuses in 80 patients. The secondary coronal and axial reformations were calculated with 2 mm image sections. Although a reduced resolution was observed in the secondary reformations, this did not compromise the detection of important anatomical features. Image deterioration due to artifacts was significantly reduced.
Koitschev
A
A
Universitäts-HNO-Klinik, Silcher Str. 5, 72076 Tübingen.
Baumann
I
I
Remy
C T
CT
Dammann
F
F
D000328:Adult; D000368:Aged; D016477:Artifacts; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D010254:Paranasal Sinus Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging / Q000601:surgery; D010348:Patient Care Team; D011856:Radiographic Image Enhancement; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed