Results 1 to 10 of about 14,164 (288)

Comparison of optical biometry versus ultrasound biometry in cases with borderline signal-to-noise ratio [PDF]

Clinical Ophthalmology, 2018
Tao Ming Thomas Chia,1 Minh T Nguyen,2 Hoon C Jung3,4 1Roski Eye Institute, University of Southern California, Los Angeles, CA, USA; 2Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison,
Chia TMT, Nguyen MT, Jung HC
doaj   +4 more sources

Complete Placenta Previa: Ultrasound Biometry and Surgical Outcomes [PDF]

American Journal of Perinatology Reports, 2018
Objective To evaluate the relationship between surgical outcomes and ultrasound measurement of placental extension beyond the cervical os in women with placenta previa.
Alison C. Wortman, Stephanie L. Schaefer, Donald D. McIntire, Jeanne S. Sheffield, Diane M. Twickler   +4 more
doaj   +5 more sources

Maternal-Fetal Ultrasouno Video Dataset for End-to-end Intrapartum Biometry and Multi-task Learning [PDF]

Scientific Data
Intrapartum biometry is of vital significance in monitoring labor progress. However, the realization of AI-based end-to-end intrapartum biometry and labor progress assessment requires intrapartum ultrasound video datasets with multi-category annotations,
Ming Niu, Jieyun Bai, Yunbo Gao, Yitong Tang, Yaosheng Lu, Zhenyan Han, Hongying Hou, Yuxin Huang   +7 more
doaj   +2 more sources

Refractive Results Using a New Optical Biometry Device: Comparison With Ultrasound Biometry Data. [PDF]

Medicine (Baltimore), 2015
The aim of the study was to compare the measurements of optical (AL-Scan; Nidek Co., Ltd.) and ultrasonic (Echo Scan US-800; Nidek Co., Ltd.) biometry devices and to assess refractive results after cataract surgery. Eighty-one cataractous eyes of 81 patients were included in this study.
Aktas S, Aktas H, Tetikoglu M, Sagdk HM, Özcura F.   +4 more
europepmc   +4 more sources

Comparison of optical biometry versus ultrasound biometry in different axial length groups. [PDF]

Saudi J Ophthalmol
Abstract PURPOSE: The accuracy of optical biometry is higher than ocular ultrasound, but it is expensive and has limitations in patients with dense cataracts. On the other hand, ocular ultrasound biometry is still a frequently used technique in most developing countries due to its lower cost.
Masoud KN, Farshid BM, Mahsa RP, Heirani M, Khodaparast M, Yousefi R.   +5 more
europepmc   +2 more sources

Fetal gestational age estimation using artificial intelligence on non-targeted ultrasound images and video [PDF]

npj Digital Medicine
We developed a deep learning model trained on over two million ultrasound images from 78,531 pregnancies from Australia, India, and the UK to estimate gestational age (GA) directly from any fetal ultrasound image, regardless of orientation.
Martin Benson, Sacha Walton, Tom Hartley, Simon Meagher, Suresh Seshadri, Nicholas Sleep, Aris T. Papageorghiou   +6 more
doaj   +2 more sources

Ultrasound Biometry

Abstract A-scan echography is used to measure the eye’s axial length. During A-scan biometry, the ultrasound beam must stay perpendicular to the anterior and posterior corneal surfaces, the anterior and posterior lens surfaces, and the retinal surface, forming an incidence angle of 90° with each of these surfaces.
Sen S, Tripathy K.
europepmc   +2 more sources

In-vivo Lens Biometry Using the Novel Ultrasound Biomicroscopy [PDF]

Frontiers in Medicine, 2022
Background and AimTo assess the reproducibility of the novel ultrasound biomicroscopy, Insight 100 and its agreement with a swept-source optical coherence tomography, CASIA2.MethodsA total of 96 volunteers (96 eyes) were enrolled.
Xiaoting Ruan, Chen Liang, Zhaoxia Xia, Xuhua Tan, Guangming Jin, Ling Jin, Zhenzhen Liu, Lixia Luo   +7 more
doaj   +3 more sources

The application of artificial intelligence in blind ultrasound sweep diagnostics for prenatal medicine: A systematic literature review [PDF]

Acta Obstetricia et Gynecologica Scandinavica
Introduction Obstetric ultrasound is fundamental in prenatal care for gestational age (GA) estimation, fetal monitoring, and complication screening. However, access to quality ultrasound is limited in many low‐ and middle‐income countries (LMICs), where ...
Johanna Schott, Melanie Wilmes, Adeline Walter, Ruben Plöger, Ingo Gottschalk, Tanja Groten, Florian Recker   +6 more
doaj   +2 more sources

Biometry and pathological ultrasound findings in multiple pregnancies

Revista Brasileira de Saúde Materno Infantil, 2023
Resumo Objectives: to determine the prevalence of pathological findings according to the type of chorionicity in pregnancies in two institutions in Bogotá, Colombia. Methods: descriptive, retrospective, cohort study. Biometric variables were calculated,
Yuly Natalia Guzmán Yara, Montserrat Uriel Calvo, Sandra Liliana Beltrán, Liliana Bandera, José de la Hoz-Valle, Ximena Carolina Romero   +5 more
doaj   +4 more sources