Results 1 to 10 of about 1,723,489 (249)
Measurement accuracy of a computer-assisted three-dimensional analysis and a conventional two-dimensional method [PDF]
The Angle Orthodontist, 2011 To determine the differences between manual and cephalometric measurements on different sections of the human skull, which were obtained using computer-assisted three-dimensional (3D) analysis and conventional two-dimensional (2D) techniques.Measurements were carried out on 13 dry human skulls, then 2D cephalograms and 3D computed tomographic (CT ...
Fatih Ors +5 more
semanticscholar +5 more sources
Accuracy Assessment for the Three-Dimensional Coordinates by High-Speed Videogrammetric Measurement [PDF]
Journal of Electrical and Computer Engineering, 2018 High-speed CMOS camera is a new kind of transducer to make the videogrammetric measurement for monitoring the displacement of high-speed shaking table structure.
Xianglei Liu, Yi Tang, Jing Ma
doaj +4 more sources
Three‐dimensional ultrasound: accuracy of distance and volume measurements [PDF]
Ultrasound in Obstetrics & Gynecology, 1996 AbstractThe aim of this study was to evaluate the accuracy of three‐dimensional ultrasound distance and volume measurements using a commercially available three‐dimensional ultrasound scanner. Sixty‐two distance measurements were performed twice on an ultrasound tissue‐mimicking phantom located in a water bath.
M. Riccabona +2 more
openaire +5 more sources
Medicina, 2023 Background and Objectives: In the field of orthopedic surgery, novel techniques of three-dimensional shape modeling using two-dimensional tomographic images are used for bone-shape measurements, preoperative planning in joint-replacement surgery, and postoperative evaluation.
Asami Nozaki +7 more
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Accuracy of 3-dimensional curvilinear measurements on digital models with intraoral scanners [PDF]
American Journal of Orthodontics and Dentofacial Orthopedics, 2017 Our objectives were to evaluate and compare the digital dental models generated from 2 commercial intraoral scanners with manual measurements when performing 3-dimensional surface measurements along a curved line (curvilinear).Dry mandibles (n = 61) with intact dentition were used.
Sercan Akyalcin +4 more
openaire +4 more sources
Transvaginal three-dimensional ultrasound: accuracy of follicular volume measurements
Fertility and Sterility, 1996 To evaluate the accuracy of three-dimensional (3-D) ultrasound (US) follicular volume measurements.Prospective clinical study.A tertiary referral center for assisted reproduction.Twenty-five patients undergoing ovarian stimulation for IVF-ET using the long protocol of GnRH agonist.Transvaginal two-dimensional (2-D) and 3-D ovarian scan performed ...
Amma Kyei-Mensah +5 more
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Accuracy of prostate volume measurements using transrectal multiplanar three‐dimensional sonography [PDF]
International Journal of Urology, 2005 Abstract The aim of this study is to evaluate the accuracy of three‐dimensional (3D) ultrasound in comparison with conventional bidimensional (2D) sonography in prostatic calculations. The study was performed using a Kretztechnik Voluson 530D machine with a 7.5 MHz endocavitary transducer.
Giubilei, Gianluca +7 more
openaire +6 more sources
Error analysis and planning accuracy for dimensional measurement in active vision inspection [PDF]
IEEE Transactions on Robotics and Automation, 1998 This paper discusses the effect of spatial quantization errors and displacement errors on the precision dimensional measurements for an edge segment. Probabilistic analysis in terms of the resolution of the image is developed for 2D quantization errors. Expressions for the mean and variance of these errors are developed.
Yang, CCC, Marefat, MM, Ciarallo, FW
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Evaluation of in vitro measurement accuracy of a three-dimensional ultrasound scanner.
Journal of Ultrasound in Medicine, 1991 We have constructed a three-dimensional (3-D) ultrasound scanner to make examinations easier and more accurate. The accuracy of the 3-D scanner has been determined by scanning a three-dimensional model. Lengths, angles, and volume of the model were computed and compared to values determined from physical measurement. Distances between image planes were
D L, King, D L, King, M Y, Shao
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Magnetic Resonance Imaging-Based Volumetric Analysis and Its Relationship to Actual Breast Weight [PDF]
Archives of Plastic Surgery, 2013 BackgroundPreoperative volume assessment is useful in breast reconstruction. Magnetic resonance imaging (MRI) and mammography are commonly available to reconstructive surgeons in the care of a patient with breast cancer.
Anna Yoo, Kyung Won Minn, Ung Sik Jin
doaj +3 more sources