What are B scans?
Keeping this in consideration, what is the difference between a scan and B scan?
Two types of devices, A-scan and B-scan, are used diagnostically. A-scan ultrasound refers to a one dimensional amplitude modulation scan. B-scan ultrasound refers to a two dimensional, cross-section brightness scan.
Also Know, what is an A scan used for? A-scan ultrasound biometry, commonly referred to as an A-scan (short for Amplitude scan), is routine type of diagnostic test used in optometry or ophthalmology. The most common use of the A-scan is to determine eye length for calculation of intraocular lens power.
One may also ask, how does a B scan work?
B-scan ultrasound uses high frequency soundwaves that are transmitted from a probe/transducer into the eye. As these soundwaves strike the intraocular structures, an echo is reflected back to the probe and converted into an electrical signal. This signal is then reconstructed into a two-dimensional image on a monitor.
What can an ultrasound of the eye detect?
An A-scan ultrasound measures the eye to determine the right power of a lens implant before cataract surgery. This may occur when you have cataracts or other conditions that make it hard for the doctor to see into the back of your eye. The test may help diagnose retinal detachment, tumors, or other disorders.