Ophthalmic Ultrasound
Ophthalmic Ultrasound for diagnostic imaging and biometry has been in use since the 1960s. For nearly 50 years, advances
in technology of transducers, miniaturization, computers, and software have revolutionized portabillity and diagnostic imaging.
We believe the technology in the LinscanUSB exemplifies the best of today's latest technology and thinking.
When to conduct an ophthalmic ultrasound exam
Under normal circumstances, the ophthalmologist can readily observe the anatomy and specifically the retina using ophthalmoscopy.
When ever this view into the eye is occluded by a dense cataract or blood in the eye, an ultrasound (US) examination is critical
in best patient care. Also, when there is a suspect foreign body, mass, or eye protrusion; the ultrasound image will provide
diagnostic insight to the patient's condition. In any instances, the US exam can give much information about retina detachments.
In animals, using appropriate sedation is required to obtain best clinical information and conduct a thorough US examination.
It is recommended that the examination be recorded so that the complete orbit is assessed using axial, horizontal, and longitudinal
"sweeps". Additionally, the US is very helpful in observing anatomical changes brought on by intravitreal drug delivery as
well as real time imaging of retrobulbar injections for a variety of species.
What to use in an ophthalmic ultrasound exam
There are two main areas of interest in conducting an ophthalmic ultrasound: anterior and posterior (and surrounding orbit)
sections of the eye.
If the regional from the cornea to posterior lenses is of interest, then a high resolution, high frequency ultrasound is
appropriate. The frequency for this application should be greater than 20MHz and optimized for correct depth of penetration.
The echographer should also consider using a immersion shell (Hansen Laboratories) for best image quality. Also, using a
water filled probe cover in a clinical setting yields excellent image quality in various eye positions and in different size
eyes (mouse to elephant). For more information how the LinscanUSB portable ultrasound system can provide anterior
images, find out about our 24MHz Ophthalmic Probe.
For the posterior region of the eye, depth and observing variations in the, vitreous, retina, choroid, optic nerve, and
surrounding ocular tissues. The most appropriate image quality can easily be seen using 12 to 15 MHz frequency transducers.
This type of imaging can be done on awake patients through the eyelid, or with sedation for more fractious patients. The
posterior image also gives a complete image of the eye, from cornea to optic nerve. The ability to capture the previous seconds
of an ophthalmic US exam is very helpful since the echographer can replay and save specific frames as jpeg images for patient
data management. For more information how the LinscanUSB portable ultrasound system can provide posterior
images, please read about our 12 MHz Ophthalmic Probe.
12MHz Ophthalmic USB Ultrasound Brochure 2011
If you need a QUOTE or more information, please contact us at info@ocuscience.us
