Evaluation of surface and volume rendering in 3D-CT of facial fractures

Evaluation of surface and volume rendering in 3D-CT of facial fractures

Three-dimensional computed tomography (3D-CT) of facial fractures has been reported as beneficial using surface (SR) and volume rendering (VR). There are controversial statements concerning the preferable algorithm. The purpose of this study was to evaluate and compare SR and VR for clinical 3D-CT i...

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Bibliographic Details
Published in:Dento-maxillo-facial radiology Vol. 35; no. 4; pp. 227 - 231
Main Authors: Rodt, T, Bartling, S O, Zajaczek, J E, Vafa, M A, Kapapa, T, Majdani, O, Krauss, J K, Zumkeller, M, Matthies, H, Becker, H, Kaminsky, J
Format: Journal Article
Language:English
Published: England 01-07-2006
Subjects:
Adolescent
Adult
Algorithms
Analysis of Variance
Child
Child, Preschool
Facial Bones - diagnostic imaging
Facial Bones - injuries
Female
Frontal Bone - diagnostic imaging
Frontal Bone - injuries
Humans
Imaging, Three-Dimensional - methods
Infant
Male
Mandibular Fractures - diagnostic imaging
Maxillary Fractures - diagnostic imaging
Middle Aged
Nasal Bone - diagnostic imaging
Nasal Bone - injuries
Radiation Dosage
Radiographic Image Enhancement - methods
Retrospective Studies
Skull Fractures - diagnostic imaging
Tomography, Spiral Computed - methods
Zygomatic Fractures - diagnostic imaging
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Summary:Three-dimensional computed tomography (3D-CT) of facial fractures has been reported as beneficial using surface (SR) and volume rendering (VR). There are controversial statements concerning the preferable algorithm. The purpose of this study was to evaluate and compare SR and VR for clinical 3D-CT in facial fractures on an experimental basis. Multislice CT was obtained in 22 patients with facial fractures using two data acquisition protocols. Five SR and VR post-processing protocols were applied. Five assessors independently evaluated the quality of visualization of the fracture gap and dislocated fragments as well as the overall image quality using a five-point rating scale. The potential benefit of the 3D-images for radiological diagnosis and presentation was evaluated. The influence of the data acquisition protocol was analysed. SR in general achieved better evaluation scores than VR at corresponding thresholds. Variation of evaluation scores for all criteria was found for SR and VR depending on the segmentation threshold. Apart from the overall image quality no significant influence of the data acquisition technique was found for the evaluated criteria. SR provided sufficient and time efficient means for 3D-visualization of facial fractures in this study. No diagnostic benefit of VR over SR was found.
ISSN:0250-832X
1476-542X
DOI:10.1259/dmfr/22989395