Munetaka Naitoh1, Akiko Hirukawa, Akitoshi Katsumata, Eiichiro Ariji. 1. Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University, 2-11 Suemori-Dori, Chikusa-Ku, Nagoya 464-8651, Japan. mune@dpc.aichi-gakuin.ac.jp
Abstract
OBJECTIVE: Measurements of bone density in designed sites are important in presurgical imaging for dental implant treatment. However, the pixel or voxel values obtained from cone-beam computed tomography (CT) images are not absolute values. Hence, the relationship between voxel values obtained from cone-beam CT with a limited-volume exposure field and a flat panel detector and bone mineral densities (BMDs) obtained from multislice CT was evaluated in the mandible. MATERIAL AND METHODS: A total of 16 (four males and 12 females) patients who had undergone imaging for mandibular dental implant treatment using cone-beam CT with Alphard VEGA and multislice CT were enrolled in this investigation. Cross-sectional images of cone-beam and multislice CT were reconstructed, and values of regions of interest (ROIs) in images were calculated. RESULTS: A high-level correlation between voxel values of cone-beam CT and BMDs of multislice CT was observed (r=0.965). CONCLUSION: It was suggested that voxel values of mandibular cancellous bone in cone-beam CT could be used to estimate bone density.
OBJECTIVE: Measurements of bone density in designed sites are important in presurgical imaging for dental implant treatment. However, the pixel or voxel values obtained from cone-beam computed tomography (CT) images are not absolute values. Hence, the relationship between voxel values obtained from cone-beam CT with a limited-volume exposure field and a flat panel detector and bone mineral densities (BMDs) obtained from multislice CT was evaluated in the mandible. MATERIAL AND METHODS: A total of 16 (four males and 12 females) patients who had undergone imaging for mandibular dental implant treatment using cone-beam CT with Alphard VEGA and multislice CT were enrolled in this investigation. Cross-sectional images of cone-beam and multislice CT were reconstructed, and values of regions of interest (ROIs) in images were calculated. RESULTS: A high-level correlation between voxel values of cone-beam CT and BMDs of multislice CT was observed (r=0.965). CONCLUSION: It was suggested that voxel values of mandibular cancellous bone in cone-beam CT could be used to estimate bone density.
Authors: Marcio José da Silva Campos; Thainara Salgueiro de Souza; Sergio Luiz Mota Júnior; Marcelo Reis Fraga; Robert Willer Farinazzo Vitral Journal: World J Radiol Date: 2014-08-28
Authors: Mohammad S Al-Zahrani; Eman Y Elfirt; Manea M Al-Ahmari; Ibrahim A Yamany; Maher A Alabdulkarim; Khalid H Zawawi Journal: J Clin Diagn Res Date: 2017-01-01
Authors: R Pauwels; O Nackaerts; N Bellaiche; H Stamatakis; K Tsiklakis; A Walker; H Bosmans; R Bogaerts; R Jacobs; K Horner Journal: Br J Radiol Date: 2013-01 Impact factor: 3.039