 | A | Anterior (7 database hits) |  |
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 | A | Ampere (9 database hits) |  |
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 | A2Cd | Apical 2 Chamber diastolic |  |
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 | A2Cs | Apical 2 Chamber systolic |  |
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 | A4Cd | Apical 4 Chamber diastolic |  |
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 | A4Cs | Apical 4 Chamber systolic |  |
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 | AALs | Acoustically Active Lipospheres |  |
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 | abs | Absolute value |  |
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 | AC | Alternating Current (2 database hits) |  |
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 | AC | Abdominal Circumference |  |
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 | ACC | Aceleration Index |  |
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 | ACR | American College of Radiology (3 database hits) |  |
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 | ACS | Aortic Valve Cusp Separation |  |
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 | ADC | Analog to Digital Converter (4 database hits) |  |
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 | ADF | Advanced Dynamic Flow |  |
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 | ADI | Agent Detection Imaging |  |
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 | AEA | Atomic Energy Act |  |
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 | AF | Atrial Fibrillation |  |
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 | AFI | Amniotic Fluid Index |  |
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 | AHBI | Average HeartBeat Interval |  |