| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
RESEARCH |
1 Department of Radiology, College of Dentistry, University of São Paulo, São Paulo, Brazil; 2 Department of Radiology, College of Medicine, The University of Iowa, USA; 3 Department of Forensic Odontology, College of Dentistry, University of São Paulo, São Paulo, Brazil
*Correspondence to: Marcelo GP Cavalcanti, College of Dentistry, University of São Paulo, 2227 Av. Lineu Prestes, 05508-900, Department of Radiology, São Paulo, SP, Brazil; Email: mgpcaval{at}usp.br
Received 17 December 2003; revised 3 March 2004; accepted 3 March 2004
Objectives: This study was designed to determine the precision and accuracy of anthropometric measurements using three-dimensional computed tomography (3D-CT) volume rendering by computer systems for craniofacial clinical applications, and to compare the craniometric landmarks using bone and soft tissue protocols.
Methods: The study population consisted of 13 cadaver heads that were examined with spiral CT. The archived CT data were transferred to a workstation, and 3D-CT volume rendered images were generated using computer graphics tools. Linear measurements (n=10), based upon conventional craniometric anatomical landmarks (n=08), were identified in 2D-CT and in 3D-CT images by two radiologists twice each independently, and then performed by 3D-CT imaging using a computer graphics systems using bone and soft tissue protocols. In total, 520 imaging measurements were made. The soft tissues were subsequently removed from the cadaver heads and the measurements were repeated using an electromagnetic 3 SpaceTM digitizer.
Results: The results demonstrated no statistically significant difference between interobserver and intraobserver measurements or between imaging and physical measurements in both 3D-CT protocols. The standard error was found to be between 0.45% and 1.44% for all the measurements in both protocols, indicating a high level of precision. Furthermore, there was no statistically significant difference between imaging and physical measurements (P>0.01). The error between the mean actual and mean 3D-based linear measurements was 0.83% for bone and 1.78% for soft tissue measurements, demonstrating high accuracy of both 3D-CT protocols.
Conclusions: 3D-CT volume rendering images using craniometric measurements can be used for anthropological studies involving craniofacial applications.
Keywords: tomography, X-ray computed, head, computer-assisted; image processing
This article has been cited by other articles:
 |
|
 |
|
  B. Hassan, P. van der Stelt, and G. Sanderink Accuracy of three-dimensional measurements obtained from cone beam computed tomography surface-rendered images for cephalometric analysis: influence of patient scanning position Eur J Orthod, April 1, 2009; 31(2): 129 - 134. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 P. Goleski, B. Warkentine, D. Lo, C. Gyuricza, D. Kendoff, and A. D. Pearle Reliability of Navigated Lower Limb Alignment in High Tibial Osteotomies Am. J. Sports Med., November 1, 2008; 36(11): 2179 - 2186. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A Yamashina, K Tanimoto, P Sutthiprapaporn, and Y Hayakawa The reliability of computed tomography (CT) values and dimensional measurements of the oropharyngeal region using cone beam CT: comparison with multidetector CT Dentomaxillofac. Radiol., July 1, 2008; 37(5): 245 - 251. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Stratemann, J. Huang, K Maki, A. Miller, and D. Hatcher Comparison of cone beam computed tomography imaging with physical measures Dentomaxillofac. Radiol., February 1, 2008; 37(2): 80 - 93. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V Kumar, J. Ludlow, A Mol, and L Cevidanes Comparison of conventional and cone beam CT synthesized cephalograms Dentomaxillofac. Radiol., July 1, 2007; 36(5): 263 - 269. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| BJR | DMFR | IMAGING | ALL BIR JOURNALS |
