ultrasonography

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Related to A-scan: ophthalmic biometry

ul·tra·so·nog·ra·phy

 (ŭl′trə-sə-nŏg′rə-fē)
n.
The use of high-frequency sound waves to image internal body structures, a developing fetus, or objects and currents that are underwater. Also called echography.

ul′tra·so·nog′ra·pher n.
ul′tra·son′o·graph′ic (-sŏn′ə-grăf′ĭk, -sō′nə-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ultrasonography

(ˌʌltrəsəˈnɒɡrəfɪ)
n
(Medicine) the technique of using ultrasound to produce pictures of structures within the body, as for example of a fetus
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ul•tra•so•nog•ra•phy

(ˌʌl trə səˈnɒg rə fi, -soʊ-)

n.
a diagnostic imaging technique utilizing reflected ultrasonic waves to delineate, measure, or examine internal body structures or organs.
[1950–55]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ultrasound, ultrasonography - Ultrasounds and ultrasonography work on the principle that sound is reflected at different speeds by tissues or substances of different densities.
See also related terms for reflected.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ultrasonography - using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram)ultrasonography - using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs
prenatal diagnosis - any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality
tomography, imaging - (medicine) obtaining pictures of the interior of the body
A-scan ultrasonography - the use of ultrasonography to measure the length of the eyeball
B-scan ultrasonography - the use of ultrasonography to view structure in the back of the eye
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

ul·tra·so·nog·ra·phy

n. ultrasonografía, técnica de diagnóstico que emplea ultrasonido para producir imágenes de una estructura o de tejidos del cuerpo.
English-Spanish Medical Dictionary © Farlex 2012

ultrasonography

n ecografía (técnica); Doppler — ecografía Doppler; duplex — ecografía dúplex
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Anterior chamber depth and ocular biometry were measured with A-scan ultrasonography (Quantel Medical Echograph, B-scan Vplus/biovision).
Ultrasound spectral technique to improve eye cataract early detection and maturity quantitative evaluation by using ultrasound A-scan radiofrequency mode is presented in [2].
The A-Scan is said to be very useful in applications where the user needs to verify the echo trace or ensure proper transducer alignment.
Features include a 4.7-inch LDC A-Scan that can be read in direct sunlight.
1959 yilinda klinige elektroeman, Hess Screen, muscle trainer; 1960'lar da Elektro retinografi ; 1966 da A-Scan ve B Scan Ultrasonografi ; 1968 de aplanasyon tonometresi /tonografi aletlerini klinige katarak Turkiye'de birimlesmenin onculugunu yapmis; cok sevdigi , onem verdigi deneysel arastirmalari yapabilmek icin de genetik , bakteriyoloji , biyokimya ve goz patolojisi laboratuarlarini kurmustur.
Each of this scans consisted of 512 A-scan measurements taken in a single circular path around the optic disc with a standard diameter of 3.4mm in 1.28 sec.
Conventional A-scan ultrasound indents the cornea causing artifactual shortening of the axial length and is best reserved for eyes with very dense cataracts where laser interferometry cannot be used.
Detailed evaluation of the cases was carried out by resident doctors like slit lamp biomicroscopy, tonometry, lacrimal sac syringing, fundus examination, keratometry and A-scan biometry.
Table 1: Corneal diameter RIGHT EYE LEFT EYE Horizontal diameter 8.5mm 8.0mm Vertical diameter 8.0mm 7.5mm Table 2: A-scan and keratometry RIGHT EYE LEFT EYE K1(VERTICAL) 44.5 (7.58) 44.25 (7.65) K2(HORIZONTAL) 45.0 (7.50) 45.50 (7.40) AXIAL LENGTH 20.15 mm 20.19 mm IOL POWER +30 D +30 D