Results 221 to 230 of about 222,275 (261)
Some of the next articles are maybe not open access.
Transvaginal three-dimensional ultrasound: accuracy of follicular volume measurements
Fertility and Sterility, 1996To 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 ...
A, Kyei-Mensah +5 more
openaire +2 more sources
A Comparison Between the Accuracy of Two-Dimensional and Three-Dimensional Strain Measurements
Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 2018This investigation determined the effect of specimen out-of-plane movement on the accuracy of strain measurement made applying two-dimensional (2D) and three-dimensional (3D) measurement approaches using the representative, state-of-the-art digital image correlation (DIC)-based tool ARAMIS.
Niranjan Desai +3 more
openaire +1 more source
High accuracy non-contact three dimensional shape measurement
2021This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
openaire +1 more source
Dual-frequency fringe for improving measurement accuracy of three-dimensional shape measurement
Chinese Optics Letters, 2021A new phase unwrapping method based on dual-frequency fringe is proposed to improve both high accuracy and large measurement range of three-dimensional shape measurement by synthesizing the projected dual-frequency fringes obtaining higher and lower frequencies.
Zixiao Miao, Qican Zhang
openaire +1 more source
Present status of traceability and accuracy of dimensional measurement in Japan
Precision Engineering, 1981Abstract The establishment and maintenance of the traceability of standards in Japan is rightly seen as an important task of the National Research Laboratory of Metrology. In this article, T. Katoh, M. Sawabe, K. Sakamoto and S. Seino outline the procedures and the results of three round robin measurements of gauge blocks by interferometry and by ...
T. Katoh +3 more
openaire +1 more source
The measurement of pointing accuracy of two-dimensional scan mirror
SPIE Proceedings, 2015Abstract The observation accuracy of space camera targ eted on ground objects is directly affected by th e pointing deviation of the two dimensional scan mirror. A plane model of the scan mirrorÂ’s normal trajectory is established when scan mirror is rotating along the rolling axis while the pitching axis remain s still.
Hui Xing, Chao An, Junru Song, Xuhua He
openaire +1 more source
Accuracy of Three-Dimensional Ultrasound for Thyroid Volume Measurement in Children and Adolescents
Thyroid, 2004The aim of this study was to estimate accuracy, intraobserver variability, and repeatability of thyroid volume measurement by ultrasound using conventional two-dimensional ellipsoid model (2D US) and manual planimetry of three-dimensional images (3D US).
Andrej, Lyshchik +2 more
openaire +2 more sources
Methods to improve the dimensional measurement accuracy of a motion tracking system
Optics and Lasers in Engineering, 2020Abstract Photogrammetry-based motion tracking systems are widely used in entertainment, medicine, sports, and other industries for low accuracy positioning applications. Camera-based systems track cooperative markers on objects to obtain their real-time positions and poses.
Shendong Shi +3 more
openaire +1 more source
Accuracy of prostate volume measurements in vitro using three-dimensional ultrasound
Academic Radiology, 1996We assessed the ability of a three-dimensional (3D) ultrasound imaging system to measure accurately prostate volume.Multiple two-dimensional ultrasound images of cadaver prostates scanned in a water bath were reconstructed into three-dimensional (3D) images.
T L, Elliot +4 more
openaire +2 more sources
American Heart Journal, 1989
Left ventricular mass (LVM) measurements made by the truncated ellipsoid algorithm from clinical two-dimensional echocardiograms (2DE) were compared to autopsy weights in 37 patients. All six 2DE instruments were calibrated with an ultrasound phantom to standardize LVM measurements.
B F, Byrd +4 more
openaire +2 more sources
Left ventricular mass (LVM) measurements made by the truncated ellipsoid algorithm from clinical two-dimensional echocardiograms (2DE) were compared to autopsy weights in 37 patients. All six 2DE instruments were calibrated with an ultrasound phantom to standardize LVM measurements.
B F, Byrd +4 more
openaire +2 more sources