在模拟临床条件下，Galileos 锥形束计算机断层摄影中的线性测量精度。
Accuracy of linear measurement in the Galileos cone beam computed tomography under simulated clinical conditions.
机构信息
Oral and Maxillofacial Radiology, General Dentistry, Tufts University School of Dental Medicine, Boston, MA, USA.
出版信息
Dentomaxillofac Radiol. 2011 Jul;40(5):299-305. doi: 10.1259/dmfr/72117593.
OBJECTIVES
The aim of this study was to determine the geometric accuracy of cone beam CT (CBCT)-based linear measurements of bone height obtained with the Galileos CBCT (Sirona Dental Systems Inc., Bensheim, Hessen, Germany) in the presence of soft tissues.
METHODS
Six embalmed cadaver heads were imaged with the Galileos CBCT unit subsequent to placement of radiopaque fiduciary markers over the buccal and lingual cortical plates. Electronic linear measurements of bone height were obtained using the Sirona software. Physical measurements were obtained with digital calipers at the same location. This distance was compared on all six specimens bilaterally to determine accuracy of the image measurements.
RESULTS
The findings showed no statistically significant difference between the imaging and physical measurements (P > 0.05) as determined by a paired sample t-test. The intraclass correlation was used to measure the intrarater reliability of repeated measures and there was no statistically significant difference between measurements performed at the same location (P > 0.05).
CONCLUSIONS
The Galileos CBCT image-based linear measurement between anatomical structures within the mandible in the presence of soft tissues is sufficiently accurate for clinical use.
目的
本研究旨在确定在软组织存在的情况下，使用 Galileos CBCT（德国 Sirona Dental Systems Inc.，黑森州本海姆）进行基于锥形束 CT（CBCT）的骨高度线性测量的几何准确性。
方法
在 6 个防腐的头颅标本上放置不透射线的基准标记物于颊侧和舌侧皮质板上，然后使用 Galileos CBCT 单元进行成像。使用 Sirona 软件获得骨高度的电子线性测量值。在同一位置使用数字卡尺进行物理测量。在所有 6 个标本上双侧比较该距离，以确定图像测量的准确性。
结果
配对样本 t 检验表明，影像学测量值与物理测量值之间无统计学差异（P＞0.05）。采用组内相关系数来测量重复测量的组内可靠性，并且在同一位置进行的测量之间无统计学差异（P＞0.05）。
结论
在软组织存在的情况下，Galileos CBCT 图像基于解剖结构的下颌骨内线性测量对于临床应用而言足够准确。
Zotero 插件