Annular Array Ultrasound in Ophthalmology
|ClinicalTrials.gov Identifier: NCT01415037|
Recruitment Status : Enrolling by invitation
First Posted : August 11, 2011
Last Update Posted : May 18, 2016
|Condition or disease||Intervention/treatment|
|Posterior Vitreous Detachment Diabetic Retinopathy||Procedure: annular array ultrasound exam|
|Study Type :||Observational|
|Estimated Enrollment :||30 participants|
|Official Title:||High-frequency-ultrasound Annular Arrays for Ophthalmic Imaging|
|Study Start Date :||October 2011|
|Estimated Primary Completion Date :||December 2016|
|Estimated Study Completion Date :||December 2016|
Annular Array Ultrasound
Subject with possible or with known posterior vitreous detachment. Subjects with diabetic retinopathy will receive annular array ultrasound exam.
Procedure: annular array ultrasound exam
For this research study you will be asked to sit in a chair. You will be given 2 drops of a numbing solution. The ultrasound camera will be enclosed in a sterile membrane and will be placed gently upon your eye. You may be asked to gaze at a light source while measurements are being made. The procedure will last about 10-15 minutes from start to finish.
- Change in detection of posterior vitreous detachment: 20MHz annular array versus 10MHz single element [ Time Frame: Subjects will be examined with both the 20MHz annular array and 10MHz single element ultrasound during the same exam, approximately 30 minutes in duration. ]The investigators will examine eyes with both conventional 10MHz ultrasound and a 20MHz annular array with synthetic focusing. The investigators will evaluate and compare images acquired with both techniques and determine their relative efficacy in visualizing the presence or absence of posterior vitreous detachment.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01415037
|United States, New York|
|Columbia University Medical Center|
|New York, New York, United States, 10032|
|Principal Investigator:||Ronald H Silverman, PhD||Columbia University|