linear measurements of CBCT superimposition

Accuracy and precision of measurements obtained from conventional cephalograms and CBCT scan in orthodontics linear diagnostic measurements

Background and Purpose:  Due to the important role of imaging in the diagnosis and treatment plan in orthodontics, CBCT (Cone Beam Computed Tomography) images because of their three-dimensional nature, can minimize the disadvantages of two-dimensional images such as magnification, distortion, or superimposition. The purpose of this study was to evaluate the accuracy of conventional cephalograms...

Assessment of mandibular advancement surgery with 3D CBCT models superimposition.

OBJECTIVES: To assess surgery and short-term post-surgery changes in the position of the condyles, rami and chin after mandibular advancement. METHODOLOGY: Pre-surgery (T1), 1 week post-surgery (T2), and 6 week post-surgery (T3) CBCT scans were acquired for 20 retrognathic patients with short or normal face height. 3D models were built and superimposed through a fully automated voxel-wise meth...

Analysis of the accuracy of linear measurements obtained by cone beam computed tomography (CBCT-NewTom).

OBJECTIVES The conical beam computed tomography (CBCT) technique presents an innovation of tomographic imaging systems and subsequent volumetric image reconstruction for dentistry. When compared with other methods of tomographic imaging CBCT is characterized by rapid volumetric image acquisition from a single low radiation dose scan of the patient. The NewTom (NewTom 9000; Quantitative Radiolog...

Investigation of the effect of slice thickness and Kvp changes on the accuracy of linear measurements in CBCT: In vitro study

Background and Aim: The accuracy of linear measurements in CBCT images is one of the critical parameters in treatment planning. Slice thickness and exposure parameters seem to affect the accuracy of linear measurements. In this study, we investigated the impact of the above factors on the accuracy of linear measurements in CBCT. Materials and Methods: For the in vitro experiment, three dry huma...

Rapid estimation of sunflower leaf area from linear measurements