Evaluation of voxel values in mandibular cancellous bone: relationship between cone-beam computed tomography and multislice helical computed tomography

被引：80

作者：

Naitoh, Munetaka ^{[1
]}

Hirukawa, Akiko ^{[2
]}

Katsumata, Akitoshi ^{[3
]}

Ariji, Eiichiro

机构：

[1] Aichi Gakuin Univ, Sch Dent, Dept Oral & Maxillofacial Radiol, Chikusa Ku, Nagoya, Aichi 4648651, Japan

[2] Aichi Gakuin Univ, Dent Hosp, Div Radiol, Nagoya, Aichi 4648651, Japan

[3] Asahi Univ, Sch Dent, Dept Oral Radiol, Mizuho, Japan

来源：

CLINICAL ORAL IMPLANTS RESEARCH | 2009年 / 20卷 / 05期

关键词：

cancellous bone; cone-beam computed tomography; Hounsfield unit; mandible; multislice computed tomography; CT;

D O I：

10.1111/j.1600-0501.2008.01672.x

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

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.

引用

页码：503 / 506

页数：4

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