7.5Mhz A-scan Medical Ultrasonic Probe Ultrasound A-scan Biometry
Product Description
7.5Mhz A-scan Medical Ultrasonic Probe Ultrasound A-scan Biometry
Specification:
Name
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7.5MHz A-Scan Probe
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Model
|
PH-7.5M |
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Structure material
|
Performance indicators ( underwater)
|
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Piezo ceramics
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shape
|
Ф5×0.27 mm |
Center frequency
|
7.5MHz±10% |
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material
|
PZT-5 |
relative bandwidth
|
＞50% |
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capacity
|
500pf ±20% |
pulse width
|
< 850ns |
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transmit-re ceive sensitivity
|
-34dB
|
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impedance：40Ω±15% |
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shell
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size
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Ф8.5×9mm |
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materi al
|
Black ABS |
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Note |
The lead wire is either 0.7mm coaxial cable or copper needle |
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Working Principle:
The ultrasound A-scan works by projecting a sound wave through the eye and then measuring reflections. A reflection happens at the junction of two different densities, such as the interface between the posterior lens capsule and the vitreous. These echoes are shown as tall spikes of a high amplitude on the display, hence the name amplitude-scan, which is often abbreviated as A-scan.
A-scan ultrasound is used to take measurements for artificial lenses for cataract surgery. This quick and painless procedure can be performed in your doctor’s office.