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Trial registered on ANZCTR
Registration number
ACTRN12622000194763
Ethics application status
Approved
Date submitted
1/12/2021
Date registered
4/02/2022
Date last updated
24/03/2024
Date data sharing statement initially provided
4/02/2022
Type of registration
Prospectively registered
Titles & IDs
Public title
Feasibility of automated ultrasound imaging using the Vexev Imaging System
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Scientific title
Feasibility of automated tomographic ultrasound scanning of arteriovenous fistulas.
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Secondary ID [1]
305951
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VX001
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
arteriovenous fistulas for dialysis
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Condition category
Condition code
Cardiovascular
322016
322016
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0
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Diseases of the vasculature and circulation including the lymphatic system
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Patients who choose to enrol in the study shall undergo imaging of their arteriovenous fistulas with the Vexev Imaging system in addition to their normal standard of care ultrasound scan. The additional procedure is expected to take less than 10minutes, with patients only undergoing the scan once in the study. The system will operated by Vexev engineering staff under the supervision of qualified sonographers or vascular surgeon. The study has a target enrolment number of 50.
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Intervention code [1]
322344
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Diagnosis / Prognosis
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Comparator / control treatment
The control treatment is a standard vascular ultrasound exam, performed as scheduled in clinic by qualified sonographer. The standard scan involves placing an ultrasound probe on the patients arm and capturing image and flow data. The scan usually takes 30-40mins.
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Control group
Active
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Outcomes
Primary outcome [1]
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Proportion of scans able to be completed with the Vexev Imaging system, as determined by adjucation by principal investigator.
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Assessment method [1]
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Timepoint [1]
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All data will be assessed upon enrolment target of 50 patients, with interim analysis of the data performed at each new enrolment.
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Secondary outcome [1]
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Time taken to complete scan with the Vexev Imaging system, using timestamps from vexex imaging software, and manual time entry by study investigators.
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Assessment method [1]
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Timepoint [1]
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All data will be assessed upon enrolment target of 50 patients, with interim analysis of the data performed at each new enrolment.
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Eligibility
Key inclusion criteria
Referred for Ultrasound examination of surgical created arteriovenous fistula.
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Minimum age
12
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Unable or unwilling to place arm onto vexev imaging system scan bed.
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Study design
Purpose of the study
Diagnosis
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
30/06/2024
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Actual
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Date of last participant enrolment
Anticipated
6/02/2025
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Actual
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Date of last data collection
Anticipated
28/02/2025
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Actual
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Sample size
Target
50
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
21252
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Prince of Wales Private Hospital - Randwick
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Recruitment postcode(s) [1]
36125
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2031 - Randwick
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Funding & Sponsors
Funding source category [1]
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Commercial sector/Industry
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Name [1]
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Vexev Pty Ltd
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Address [1]
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54 Forveax Street Surry Hills
NSW 2010
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Country [1]
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Australia
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Primary sponsor type
Commercial sector/Industry
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Name
Vexev Pty Ltd
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Address
54 Forveax Street Surry Hills
NSW 2010
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
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Country [1]
311410
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Bellberry
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Ethics committee address [1]
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123 Glen Osmond Rd, Eastwood SA 5063
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
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30/07/2021
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Approval date [1]
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27/10/2021
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Ethics approval number [1]
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No: 2021-08-952
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Summary
Brief summary
The purpose of this study is to evaluate the functionality of the Vexev Robot Imaging System (VRIS) for arteriovenous fistula ultrasound scanning. Duplex ultrasound examinations are labour intensive and require highly skilled staff to perform, these staff are limited in the number of scans they are able to perform per day, and hence there are often issues of timely access to quality duplex ultrasound services. The VRIS is designed to autonomously perform high quality duplex ultrasound scans in a fraction of the time of a normal duplex sonography procedure. The VRIS is designed with the goal of outputting highly reproducible and accurate duplex ultrasound, which we hope will improve the ability for clinicians to map, monitor and intervene and hence increase AVF longevity. Normal duplex ultrasound scans involve a medical professional placing an ultrasound probe on the patient’s limb then moving the probe to image the regions of interest. In contrast the VRIS scan involves the patient placing their limb onto a scan bed and the ultrasound probe moving automatically, underneath the scan bed, to scan all regions of interest. It is expected that the VRIS scan will require significantly less time to complete (10mins for VRIS vs ~45mins for normal duplex scan). The primary objective of this feasibility study is to evaluate the feasibility (as defined by the primary endpoints) of the VRIS for AVF ultrasound (US) scanning, performed in a specialist vascular imaging practice. This study does not involve evaluation(s) of the clinical efficacy of the VRIS. Study participants will be enrolled for scanning with the VRIS in the same visit as their scheduled clinically, standard of care, indicated AVF US mapping or surveillance exam. Secondary objectives are to measure the practicality and feasibility of VRIS for routine clinical use and to collect paired outcome data to assist with the development of the VRIS system .
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Trial website
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Trial related presentations / publications
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Public notes
Re: Application No: 2021-08-952 Study Title: The VRIS AVF feasibility trial Feasibility of automated tomographic ultrasound scanning of arteriovenous fistulas. Application Type: NEW Type of Review: FULLBOARD Committee Name/NHMRC Codes: A/ EC00372; B/ EC00419; C/ EC00430; D/ EC00444; E/ EC00450; F/ EC00455; G/ EC00458; H/ EC00459; I/ EC00468; J/ EC00469; K/ EC00470; L/ EC00471.
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Contacts
Principal investigator
Name
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Dr Shannon Thomas
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Address
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Level 2, Outpatients A, Campus Centre Building Prince of Wales Public Hospital, 320 - 346 Barker Street, Randwick NSW 2031
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Country
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Australia
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Phone
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+61 02 9382 2113
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Michael cartmill
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Address
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Vexev Pty Ltd
54 Forveax Street, Surry Hills
2010 NSW
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Country
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Australia
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Phone
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+61 400223656
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Michael cartmill
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Address
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Vexev Pty Ltd
54 Forveax Street, Surry Hills
2010 NSW
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Country
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Australia
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Phone
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+61 400223656
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Fax
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Email
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[email protected]
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Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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