Results 11 to 20 of about 189,557 (261)

Evaluation of the linear and volumetric measuring changes in different positions in CBCT

open access: yesClinical and Experimental Dental Research, 2023
Objectives The effect of head position on reproducibility of volumetric measurements on Cone‐beam computed tomography (CBCT) scans has not been evaluated before.
Samira Fani   +4 more
doaj   +1 more source

Three-Dimensional Quantitative Assessment of Pedicle Screw Accuracy in Clinical Utilization of a New Robotic System in Spine Surgery: A Multicenter Study [PDF]

open access: yesNeurospine, 2023
Objective The objective of this study was to evaluate the accuracy of pedicle screw placement in patients undergoing percutaneous pedicle screw fixation with robotic guidance, using a newly developed 3-dimensional quantitative measurement system.
Byeong-Jin Ha   +16 more
doaj   +1 more source

Trueness of cone-beam computed tomography-derived skull models fabricated by different technology-based three-dimensional printers

open access: yesBMC Oral Health, 2023
Background Three-dimensional (3D) printing is a novel innovation in the field of craniomaxillofacial surgery, however, a lack of evidence exists related to the comparison of the trueness of skull models fabricated using different technology-based ...
Xiaotong Wang   +4 more
doaj   +1 more source

Anthropometric accuracy of three-dimensional average faces compared to conventional facial measurements [PDF]

open access: yesScientific Reports, 2021
AbstractThis study aimed to evaluate and compare the accuracy of average faces constructed by different methods. Original three-dimensional facial images of 26 adults in Chinese ethnicity were imported into Di3DView and MorphAnalyser for image processing.
Zhiyi Shan   +8 more
openaire   +3 more sources

THREE-DIMENSIONAL MEASUREMENT METHOD OF FLATNESS OF LARGE DEPLOYABLE FLAT SAR [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
In order to improve the detection and surveillance capability of space-based SAR, large-size spaceborne SAR antenna is needed, and the scale will reach the order of 100 meters.
H. Shi
doaj   +1 more source

Comparison of the Efficacy of Digital Caliper and a Newly Designed Digital Bone Gauge for Measurement of Edentulous Alveolar Ridge Width

open access: yesJournal of Dental School, 2019
Objectives: An efficient, safe, affordable and easily accessible measuring instrument for quantitative assessment of bone prior to dental implant placement enables more accurate treatment planning.
Reza Amid   +3 more
doaj   +1 more source

Does vaporized hydrogen peroxide sterilization affect the geometrical properties of anatomic models and guides 3D printed from computed tomography images?

open access: yes3D Printing in Medicine, 2021
Background Material extrusion is used to 3D print anatomic models and guides. Sterilization is required if a 3D printed part touches the patient during an intervention. Vaporized Hydrogen Peroxide (VHP) is one method of sterilization.
Mauricio Toro   +3 more
doaj   +1 more source

Accuracy of Digital Impression Taking Using Intraoral Scanner Versus the Conventional Technique

open access: yesFrontiers in Dentistry, 2021
Objectives: Intraoral scanners have shown promising results when used as an adjunct or alternative to conventional impression techniques. This study compared the accuracy of digital impression taking using an intraoral scanner versus the conventional ...
Arash Zarbakhsh   +4 more
doaj   +1 more source

Dimensional Accuracy of Polyvinyl Siloxane Impression Materials Considering Impression Techniques– A Literature Review

open access: yesJournal of Dental School, 2019
Objectives Impression accuracy is the main determinant of the fit, form and function of prosthetic restorations. Polyvinyl siloxane (PVS) is the material of choice in most clinical situations. The purpose of this paper is to provide an up-to-date review
Nadia Nouri   +5 more
doaj   +1 more source

A two dimensional accuracy-based measure for classification performance

open access: yesInformation Sciences, 2017
Abstract Accuracy has been used traditionally to evaluate the performance of classifiers. However, it is well known that accuracy is not able to capture all the different factors that characterize the performance of a multiclass classifier. In this manuscript, accuracy is studied and analyzed as a weighted average of the classification rate of each ...
Mariano Carbonero-Ruz   +4 more
openaire   +2 more sources

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