Results 1 to 10 of about 420,569 (273)

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

open access: yesClinical 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   +6 more sources

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

open access: yesAmerican 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   +4 more
doaj   +4 more sources

Impact of ultrasound and optical biometry on refractive outcomes of cataract surgery after penetrating keratoplasty in keratoconus [PDF]

open access: yesInternational Journal of Ophthalmology, 2019
AIM: To analyse the impact of ultrasound and optical intraocular lens (IOL) calculation methods on refractive outcomes of cataract phacoemulsification performed after penetrating keratoplasty (PK) in keratoconus.
Katarzyna Krysik   +2 more
exaly   +2 more sources

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

open access: yesFrontiers 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. The radius of anterior lens curvature (RAL), the radius of posterior lens curvature (RPL), lens thickness (LT), and lens ...
Xuhua Tan, Guangming Jin, Zhaoxia Xia
exaly   +4 more sources

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

open access: yesSaudi Journal of Ophthalmology
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, Khorrami-Nejad   +5 more
openaire   +3 more sources

Prediction of ocular length in hypotony condition: a measurement study using immersion ultrasound biometry and Dino-Lite® microscope in goat eyes [PDF]

open access: yesScientific Reports
Biometry examination before cataract surgery is crucial to determine intraocular lens (IOL) power. It is mainly influenced by the measurement of eyeball axial length (AXL) and anterior chamber depth (ACD).
Umar Mardianto   +8 more
doaj   +2 more sources

Ultrasound Biometry

open access: yes
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.
Maya C. Shammas, H. John Shammas
openaire   +2 more sources

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

open access: yesScientific 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   +7 more
doaj   +2 more sources

Refractive Results Using a New Optical Biometry Device [PDF]

open access: yesMedicine, 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, Serdar   +4 more
openaire   +4 more sources

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

open access: yesActa 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   +6 more
doaj   +2 more sources

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