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1. Diagnostic Testing: A-Scan Biometry - The Eye Institute
Link: http://www.seebetterbrevard.com/diagnostic-testing/ascan.php
Description: WEBDiagnostic Testing: A-Scan Biometry. A-SCAN BIOMETRY. A-Scan Ultrasound biometry, also referred to as A-Scan, utilizes an ultrasound device for diagnostic testing. This device can determine the length of the eye and can be useful in …
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2. A-Scan Biometry: Practice Essentials, Ultrasound Principles ... - Medscape
Link: https://emedicine.medscape.com/article/1228447-overview
Description: WEBA-scan biometry, also referred to as A-scan, utilizes an ultrasound device for diagnostic testing. This device can determine the length of the eye and can be useful in diagnosing common sight...
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3. Why do I Need an “A” Scan? - Tamara Wyse, M.D
Link: https://www.tamarawysemd.com/our-services/cataracts/why-do-i-need-a-scan/
Description: WEBYes, an “A” Scan is always needed before cataract surgery, so it is covered by insurance. When we feel a repeat scan is needed, we do not bill the patient or the insurance. For more detailed information on cataracts, cataract surgery, and different types of lens implants please select a topic below:
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4. A-scan ultrasound biometry - Wikipedia
Link: https://en.wikipedia.org/wiki/A-scan_ultrasound_biometry
Description: WEBA-scan ultrasound biometry, commonly referred to as an A-scan (short for Amplitude scan ), is a routine type of diagnostic test used in optometry or ophthalmology. The A-scan provides data on the length of the eye, which is a major determinant in …
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5. Ophthalmologic Ultrasound - EyeWiki
Link: https://eyewiki.aao.org/Ophthalmologic_Ultrasound
Description: WEBDec 27, 2023 · In A-scan, or time-amplitude scan, sound waves are generated at 8 MHz and converted into spikes that correspond with tissue interface zones. In B-scan, or brightness amplitude scan, sound waves are generated at 10 MHz. The data collected by the transducer produces a corresponding image. [2]
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6. A-Scan Biometry: Principles of Ultrasound
Link: https://www.aao.org/education/basic-skills/ascan-biometry-principles-of-ultrasound
Description: WEBJAN 29, 2011. A-Scan Biometry: Principles of Ultrasound. Comprehensive Ophthalmology. Play Video. Add to My Bookmarks. Comments. Views 4677. This is part 1 of a 4-part video series titled "A-Scan Biometry." A-scan ultrasonography remains the standard technique for measuring axial length in IOL power calculation.
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7. A-Scan Ultrasound: Biometry - Michigan College Of Optometry
Link: https://www.ferris.edu/optometry/patient-care/special-testing/A-Scan-Ultrasound-Biometry.htm
Description: WEBUniversity Eye Center. Biometry is used to determine axial length of the eye and to determine the depth of the anterior chamber, lens and vitreous cavity. The A-scan ultrasound is the most commonly employed, since it is an essential part of the preoperative evaluation of cataract surgery patients.
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8. Update on A-Scan and B-Scan Ocular Ultrasound Technologies
Link: https://www.ophthalmologyweb.com/Featured-Articles/146066-Update-on-A-Scan-and-B-Scan-Ocular-Ultrasound-Technologies/
Description: WEBSep 18, 2013 · A-scan ultrasound refers to a one dimensional amplitude modulation scan. It is most commonly used for measurement of axial length (AL), which is critical for intraocular lens (IOL) calculations prior to cataract surgery.
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9. A-Scan | Eye Patient
Link: https://eyepatient.net/Home/articledetail/a-scan-364
Description: WEBA-scan, short for Amplitude scan, is one of the diagnostic tests in the ophthalmology field that uses ultrasound technology. The scan is responsible for measuring the axial length (AL). The axial length is the eyes’ length. This test provides a more detailed view of what’s inside the eye when compared to a routine eye exam.
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10. A-Scan Biometry: Ultrasound Principles, Ultrasound Biometry
Link: https://emedicine.dev01.medscape.com/article/1228447-overview
Description: WEBApr 8, 2014 · A-Scan Biometry. Ultrasound Principles. Sound is defined as a vibratory disturbance within a solid or liquid that travels in a wave pattern. When the sound frequency is between 20 hertz (Hz)...