- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03764111
Comparing an Inexpensive Handheld Ultrasound Machine and a Large Mobile Ultrasound System
Ultrasound Image Quality Comparison Between an Inexpensive Handheld Ultrasound Machine and a Large Mobile Ultrasound System
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Ultrasound technology is frequently used to obtain information, usually at patients bedside. The images obtained are used to guide procedure (i.e central line placement, epidural needle guidance) or to make diagnosis (i.e abnormal placentation, presence of pneumothorax). Given that the majority of this procedures and diagnosis are made at bedside, the ideal ultrasound machine should be portable, lightweight, and within an acceptable price range. Our current ultrasound machine (Sonosite - M turbo) has a price range from 15,000-20,000 dollars, not including the different probes that are needed to obtain images at different depths in the human body. Much of the cost is due to the ultrasound transducers, which have been traditionally based on piezoelectric technology. Such probes work by passing current through a piezoelectric crystal (typically quartz) that then vibrates rapidly and generates an ultrasound pulse. Creating crystal arrays is difficult and often requires hand-manufacturing. Furthermore, this technology is analog and requires downstream analog-to-digital processing hardware. Together, these characteristics increase device costs and restrict the broader dissemination of ultrasound technology.
Recently, the Butterfly iQ company created an ultrasound that is portable and at a price of slightly under two thousand dollars it allows the physician to obtain images for diagnostic and/or procedural guidance using a single probe. The company was able to significantly reduced the cost and the need for additional probes by utilizing Capacitive micro-machined ultrasound transducers (CMUTs). Essentially instead of relying on the use of specific piezoelectric crystals (current ultrasound technology), they are using a micro-chip technology to emit the vibrations that would be used to form an image. Butterfly Network has developed a CMUT imaging device that has been designed to be compliant with all applicable FDA safety regulations (see section II.C), while enabling increased portability and real-time smartphone-based image review due to the integrated circuit design. The Butterfly device was FDA-approved as of October 2017. The proposed study will compare the images acquired by the Butterfly iQ and our current Sonosite M-turbo US.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Connecticut
-
New Haven, Connecticut, United States, 06510
- Yale University
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patients needing a routine obstetric scan or requesting a transverse abdominis block, labor epidural or spinal for cesarean delivery.
Exclusion Criteria:
- Body Mass Index (BMI) > 45
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
large mobile ultrasound system
the ultrasound transducer is based on piezoelectric technology.
|
30 spine images, 15 Transverse abdominis muscle and 30 Obstetric images (i.e placenta, uterine blood flow, etc) images will be obtained using the large mobile ultrasound system.
Other Names:
|
handheld ultrasound machine
The handheld device utilizes Capacitive micro-machined ultrasound transducers (CMUTs) instead of piezoelectric technology
|
30 spine images, 15 Transverse abdominis muscle and 30 Obstetric images (i.e placenta, uterine blood flow, etc) images will be obtained using the handheld device.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Ultrasound image quality-resolution
Time Frame: Prior to start of active labor or before elective cesarean delivery
|
Images will be rated on a 10-point Likert-type scale; higher scores indicate better image quality.
|
Prior to start of active labor or before elective cesarean delivery
|
Ultrasound image quality-details
Time Frame: Prior to start of active labor or before elective cesarean delivery
|
Images will be rated on a 10-point Likert-type scale; higher scores indicate better image quality.
|
Prior to start of active labor or before elective cesarean delivery
|
Ultrasound image quality-total image quality
Time Frame: Prior to start of active labor or before elective cesarean delivery
|
Images will be rated on a 10-point Likert-type scale; higher scores indicate better image quality.
|
Prior to start of active labor or before elective cesarean delivery
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Antonio Gonzalez, MD, Yale University
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 2000024151
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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