Effect of the number of basis images on the detection of longitudinal tooth fractures using local computed tomography.

Effect of the number of basis images on the detection of longitudinal tooth fractures using local computed tomography. Research Abstract Details 

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Effect of the number of basis images on the detection of longitudinal tooth fractures using local computed tomography. Abstract Text:

M A Mora,A Mol,D A Tyndall,E M Rivera,M A Mora,A Mol,D A Tyndall,E M Rivera,

OBJECTIVES: To determine the effect of the number of basis images on the accuracy of local CT (LCT) in detecting longitudinal fractures and test the accuracy of terminal point assessment. METHODS: Longitudinal fractures were induced in 30 of 60 posterior teeth. LCT volumes were generated from 180, 60, 36 and 20 basis images. Ten observers determined the presence of a fracture and its terminal point. Receiver operating characteristic (ROC) analysis was used to quantify detection accuracy, and kappa statistics were used to quantify the concordance between actual and observed terminal point locations. RESULTS: A(z)-values were 0.91, 0.84, 0.74, 0.57 and 0.70 for LCT180, LCT60, LCT36, LCT20 and conventional radiography, respectively (ANOVA: P<0.0001). LCT180 and LCT60 outperformed the other modalities. The respective kappa values for terminal point assessment were 0.52, 0.40, 0.37, 0.16 and 0.32 (ANOVA: P=0.00). LCT180 and LCT60 provided better agreement. CONCLUSIONS: LCT maintained its efficacy for detecting longitudinal fractures with 60 instead of 180 basis images. Agreement between actual and observed terminal point locations was moderate for LCT60 and LCT180.

Effect of the number of basis images on the detection of longitudinal tooth fractures using local computed tomography. Publishing Authors By Initials

MA Mora,A Mol,DA Tyndall,EM Rivera,MA Mora,A Mol,DA Tyndall,EM Rivera,

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Effect of the number of basis images on the detection of longitudinal tooth fractures using local computed tomography. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Dento maxillo facial radiology

VOLUME: 36

Page Numbers: 382-6

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ISSN: 0250-832X

DAY: 20

MONTH: Oct

YEAR: 2007

Effect of the number of basis images on the detection of longitudinal tooth fractures using local computed tomography. Information

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LANGUAGE: eng

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AFFILIATION: Department of Diagnostic Sciences and General Dentistry, UNC School of Dentistry, CB 7450, Chapel Hill, NC 27599-7450, USA.

Country: England

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MEDLINETA: Dentomaxillofac Radiol

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