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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 257 - 262 (6page)
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초록· 키워드
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Purpose: This study was performed to evaluate the effect of changing the orientation of a reconstructed image on the accuracy of linear measurements using cone-beam computed tomography (CBCT). Materials and Methods: Forty-two titanium pins were inserted in seven dry sheep mandibles. The length of these pins was measured using a digital caliper with readability of 0.01 mm. Mandibles were radiographed using a CBCT device. When the CBCT images were reconstructed, the orientation of slices was adjusted to parallel (i.e., $0^{\circ}$), $+10^{\circ}$, $+12^{\circ}$, $-12^{\circ}$, and $-10^{\circ}$ with respect to the occlusal plane. The length of the pins was measured by three radiologists, and the accuracy of these measurements was reported using descriptive statistics and one-way analysis of variance (ANOVA); p<0.05 was considered statistically significant. Results: The differences in radiographic measurements ranged from -0.64 to +0.06 at the orientation of $-12^{\circ}$, -0.66 to -0.11 at $-10^{\circ}$, -0.51 to +0.19 at $0^{\circ}$, -0.64 to +0.08 at $+10^{\circ}$, and -0.64 to +0.1 at $+12^{\circ}$. The mean absolute values of the errors were greater at negative orientations than at the parallel position or at positive orientations. The observers underestimated most of the variables by 0.5-0.1 mm (83.6%). In the second set of observations, the reproducibility at all orientations was greater than 0.9. Conclusion: Changing the slice orientation in the range of $-12^{\circ}$ to $+12^{\circ}$ reduced the accuracy of linear measurements obtained using CBCT. However, the error value was smaller than 0.5 mm and was, therefore, clinically acceptable.
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참고문헌 (18)
참고문헌 신청
Torres MG / 2012 / Accuracy of linear measurements in cone beam computed tomography with different voxel sizes / Implant Dent 21:150~155
Cavalcanti MG / 2004 / Craniofacial measurements based on 3D-CT volume rendering : implications for clinical applications / Dentomaxillofac Radiol 33:170~176
Ziegler CM / 2002 / Clinical indications for digital volume tomography in oral and maxillofacial surgery / Dentomaxillofac Radiol 31:126~130
Guerrero ME / 2006 / State-of-the-art on cone beam CT imaging for preoperative planning of implant placement / Clin Oral Investig 10:1~7
Kau CH / 2005 / Three-dimensional cone beam computerized tomography in orthodontics / J Orthod 32:282~293
Cavalcanti MG / 2004 / Craniofacial measurements based on 3D-CT volume rendering : implications for clinical applications / Dentomaxillofac Radiol 33:170~176
Ziegler CM / 2002 / Clinical indications for digital volume tomography in oral and maxillofacial surgery / Dentomaxillofac Radiol 31:126~130
Guerrero ME / 2006 / State-of-the-art on cone beam CT imaging for preoperative planning of implant placement / Clin Oral Investig 10:1~7
Kau CH / 2005 / Three-dimensional cone beam computerized tomography in orthodontics / J Orthod 32:282~293
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