Posters

Use of ultra high-frequency ultrasound VevoMD (70 MHz) in ophthalmology

Poster Details

First Author: M.Trone FRANCE

Co Author(s):    J. Perrot   D. Grivet   F. Cambazard   E. Cinotti   P. Gain   G. Thuret     

Abstract Details

Purpose:

Current ophthalmology ultrasound platforms use 10, 15 and 20MHz B-scan probes and 25 to 50MHz ultrabiomicroscopy (UBM) probes. Resolution increases with frequency whereas image depth decreases. An ultra high-frequency (UHF at 70 Mhz) ultrasound system has been commercialized in 2016 to visualize nerves, skin layers, tendons or small vessels and is used in dermatology, neonatology, rheumatology or vascular medicine. Aim : To report the very first use in ophthalmology.

Setting:

Ophthalmology department, University Hospital, Saint-Etienne, France.

Methods:

The VevoMD high-frequency ultrasoundsystem (Fujifilm) was used with the UHF70 transducers. With a frequency ranging from 29 to 71 MHz, it announced 30μm of axial resolution, 65μm of lateral resolution, and maximal image width of 9.7mm and maximal image depth of 10.0mm. We recruited patients with different diseases requiring ultrasound examination. The probe was applied on the eye with carbomer gel as ultrasound coupling gel. When possible, the diseased eye was compared to the healthy eye.

Results:

We obtained images and videos of: a spontaneous scleral fistula, iris cysts, cataracts, corneal dystrophies, anterior retinal detachments and the vitreous basis. Images were compared to the different anatomical structures of the contralateral healthy eyes. No adverse event occurred. Thanks to the small sized probe, tolerance was excellent, similar to the current ophthalmology ultrasound examination.

Conclusions:

This UHF ultrasoundsystem provides high-resolution images of the anterior half of the eyeball. It can advantageously be mutualized between different medical disciplines. This first successful feasibility study prompts us to organize a comparative study with the 50MHz UBM.

Financial Disclosure:

None