Assessment of computerized tomography density patterns of ameloblastomas and keratocystic odontogenic tumors.
The aim of this study was to evaluate computerized tomography (CT) density patterns of solid ameloblastomas (SA), unicystic ameloblastomas (UA), and sporadic and multiple keratocystic odontogenic tumors (SK and MK, respectively). A region of interest (ROI) was delimited corresponding to almost the entire lesional area on each axial slice of 25 CT exams. For each ROI, CT values (HU(ROI)) and heterogeneity (HTG(ROI)) were recorded and compared among lesion groups as well as among central and peripheral slices of the same lesion. The average HU(ROI) were: SA 35.9 +/- 12.6; UA 31.0 +/- 6.0; SK 28.4 +/- 10.5; and MK 30.5 +/- 20.6. SK and MK had the lowest CT values and highest heterogeneity. SA and UA did not show statistical difference for HU(ROI). However, SA had greater HTG(ROI) values. SA presented a different pattern when the central slices were compared with the peripheral slices. HU(ROI) was higher, whereas HTG(ROI) was lower, among the central slices of SA.
Crusoé-Rebello
Ieda
I
Department of Oral and Maxillofacial Radiology, School of Dentistry, Federal University of Bahia, Salvador, Brazil.
Oliveira
Christiano
C
Campos
Paulo Sérgio Flores
PS
Azevedo
Roberto Almeida
RA
dos Santos
Jean Nunes
JN
D015502:Absorptiometry, Photon / Q000379:methods; D000293:Adolescent; D000328:Adult; D000564:Ameloblastoma / Q000145:classification / Q000000981:diagnostic imaging*; D002648:Child; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007573:Jaw Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D009808:Odontogenic Tumors / Q000145:classification / Q000000981:diagnostic imaging*; D011856:Radiographic Image Enhancement / Q000379:methods; D012189:Retrospective Studies; D036542:Tomography, Spiral Computed / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult