Image quality evaluation of small FOV and large FOV CBCT devices for oral and maxillofacial radiology

被引:14
作者
Dillenseger, Jean-Philippe [1 ,2 ,3 ]
Gros, Catherine-Isabelle [3 ,4 ]
Sayeh, Amira [4 ]
Rasamimanana, Johary [5 ]
Lawniczak, Fabrice [5 ]
Leminor, Jean-Marie [2 ,3 ,6 ]
Matern, Jean-Francois [1 ]
Constantinesco, Andre [1 ]
Bornert, Fabien [3 ,4 ]
Choquet, Philippe [1 ,2 ,3 ]
机构
[1] Hop Univ Strasbourg, Pole Imagerie, Imagerie Preclin, Strasbourg, France
[2] Univ Strasbourg, CNRS, Equipe MMB, Icube, Strasbourg, France
[3] Univ Strasbourg, Fac Med, Federat Med Translat Strasbourg, Strasbourg, France
[4] Univ Strasbourg, Fac Chirurg Dent, Strasbourg, France
[5] Univ Strasbourg, Equipe Mecaflu, Icube, Strasbourg, France
[6] Univ Strasbourg, Inst Anat Normale, Strasbourg, France
关键词
CBCT; bone imaging; dental imaging; quantitative evaluation; radiologic phantoms; CONE-BEAM CT; COMPUTED-TOMOGRAPHY; RESOLUTION; SCANNERS;
D O I
10.1259/dmfr.20160285
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objectives: Quantitative and qualitative image quality evaluation of two different dental CBCT scanners. Methods: Two CBCT systems were evaluated in this study: one small field-of-view (FOV) (50-mm diameter) system that also allows two-dimensional (2D) dental panoramic imaging and one large FOV CBCT system (60-180-mm diameter). These devices were all tested with installed acquisition default modes and proprietary reconstruction software, enabling high-resolution bone imaging. Quantitative analyses were carried out to measure spatial resolution, linearity and homogeneity. Small-size phantoms and a human dry skull were used to evaluate intrinsic performances. Visual qualitative analyses of specific anatomical parts were blindly performed by 10 operators. Results: Concerning spatial resolution, small-voxel size protocols provide equivalent results on the two apparatus. In terms of linearity, all systems are highly linear (0.98< r(2)<0.99) over the range of signal intensities encountered. Our results, coming from either phantoms or the dry skull, demonstrate that the small FOV CBCT suffers from a lack of homogeneity. Conclusions: For limited oral and maxillofacial volume imaging (diameter< 50 mm), the polyvalent small FOV CBCT (2D and three-dimensional imaging) system used in this study could reach performances similar to those of the large FOV CBCT.
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页数:10
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