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 e...

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Published in:Oral surgery, oral medicine, oral pathology, oral radiology and endodontics oral medicine, oral pathology, oral radiology and endodontics, 2009-10, Vol.108 (4), p.604-608
Main Authors: Crusoé-Rebello, Ieda, DDS, PhD, Oliveira, Christiano, DDS, MSc, Campos, Paulo Sérgio Flores, DDS, PhD, Azevedo, Roberto Almeida, DDS, PhD, dos Santos, Jean Nunes, DDS, PhD
Format: Article
Language:English
Subjects:
Absorptiometry, Photon - methods
Adolescent
Adult
ameloblastoma
Ameloblastoma - classification
Ameloblastoma - diagnostic imaging
Biological and medical sciences
Child
Computed tomography
Dentistry
Facial bones, jaws, teeth, parodontium: diseases, semeiology
Female
Humans
Image Processing, Computer-Assisted - methods
Jaw Neoplasms - diagnostic imaging
Male
Medical sciences
Middle Aged
Odontogenic tumors
Odontogenic Tumors - classification
Odontogenic Tumors - diagnostic imaging
Otorhinolaryngology. Stomatology
Radiographic Image Enhancement - methods
Retrospective Studies
Statistics
Surgery
Tomography, Spiral Computed - methods
Tomography, X-Ray Computed - methods
Tumors
Young Adult
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Summary: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 (HUROI ) and heterogeneity (HTGROI ) were recorded and compared among lesion groups as well as among central and peripheral slices of the same lesion. The average HUROI 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 HUROI . However, SA had greater HTGROI values. SA presented a different pattern when the central slices were compared with the peripheral slices. HUROI was higher, whereas HTGROI was lower, among the central slices of SA.
ISSN:1079-2104
1528-395X
DOI:10.1016/j.tripleo.2009.03.008