锥形束计算机断层扫描与数字卡尺测量下颌骨线性指标的对比研究
Comparative study of mandibular linear measurements obtained by cone beam computed tomography and digital calipers.
作者信息
Tarazona-Álvarez Pablo, Romero-Millán Javier, Peñarrocha-Oltra David, Fuster-Torres María Á, Tarazona Beatriz, Peñarrocha-Diago Miguel
机构信息
Master in Oral Surgery and Implantology. Valencia University Medical and Dental School. Valencia, Spain.
Master in Oral Surgery and Implantology. Professor of the Master in Oral Surgery and Implantology. Valencia University Medical and Dental School. Valencia, Spain.
出版信息
J Clin Exp Dent. 2014 Jul 1;6(3):e271-4. doi: 10.4317/jced.51426. eCollection 2014 Jul.
OBJECTIVES
Cone beam computed tomography (CBCT) is an innovative dental of imaging system characterized by rapid volumetric imaging with patient exposure to a single dose of radiation. The present study was carried out to compare the linear measurements obtained with CBCT and digital caliper in 20 mandibles from human cadavers.
STUDY DESIGN
A total of 4800 linear measurements were measured between different mandibular anatomical points with CBCT and digital caliper. The real measurements were defined as those obtained with the digital caliper. Posteriorly, the mandibles were scanned to obtain the CBCT images, with software-based measurements of the distances.
RESULTS
The measurements obtained with the digital caliper were greater. The CBCT technique underestimated distances greater than 100 mm.
CONCLUSIONS
CBCT allows to obtain linear mandibular anatomical measurements equivalent to those obtained with digital caliper. The differences existing between both methods were clinically acceptable. Key words:Computed tomography, cone beam CT, accuracy, reliability, digital caliper.
目的
锥形束计算机断层扫描（CBCT）是一种创新的牙科成像系统，其特点是能快速进行容积成像，且患者仅接受单次辐射剂量。本研究旨在比较使用CBCT和数字卡尺对20具人类尸体下颌骨进行的线性测量结果。
研究设计
使用CBCT和数字卡尺在不同下颌骨解剖点之间总共进行了4800次线性测量。实际测量值定义为用数字卡尺获得的值。随后，对下颌骨进行扫描以获取CBCT图像，并通过软件测量距离。
结果
用数字卡尺获得的测量值更大。CBCT技术低估了大于100毫米的距离。
结论
CBCT能够获得与数字卡尺相当的下颌骨解剖线性测量值。两种方法之间存在的差异在临床上是可接受的。关键词：计算机断层扫描、锥形束CT、准确性、可靠性、数字卡尺。
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