- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05482321
Pancreas Ultrasound Imaging in type1 Diabetes
Contrast Enhanced Ultrasound Imaging of Pancreas Blood Flow in type1 Diabetes
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Design and Research Methods
Part I:
5 subjects from SOP group Goal: Optimize settings for destruction-replenishment contrast-enhanced ultrasound scan
- Subject recruited at the Barbara Davis Center
- Subject provides written consent
- Review medical history (exclusion if required)
- Subject refrains from eating for ~6h prior to measurement
- Subject visits University of Colorado Hospital CTRC echo lab
- CTRC staff places peripheral intravenous line (PIV)
- Research staff collects vital signs, height and weight
- Subject received conventional ultrasound scan to locate pancreas tail (by Sonographer, verified by radiologist).
- Subject receives DEFINITY dose
- Subject receives destruction-replenishment contrast-enhanced ultrasound scan (adjust settings to optimize)
- Pause for 30 minutes, allowing subject to stand and move
- Repeat steps 9-11 (once).
- Subject de-identified.
- Analyze data.
Part II:
30 subjects from control group (healthy controls and multiple islet autoantibody positive subjects), 15 subjects from T1D group.
Goal: characterize subject variability and test whether healthy subjects and those with T1D show differing contrast measures
- Subject recruited at the Barbara Davis Center
- Subject provides written consent
- Review medical history (exclusion if required)
- Subject refrains from eating for ~6h prior to study
- Subject visits University of Colorado Hospital CTRC echo lab
- Subject completes questionnaire (family history of diabetes, exclusion criteria)
- CTRC staff places peripheral intravenous line (PIV)
- Research staff collects vital signs, height and weight
- Subject received conventional ultrasound scan to locate pancreas tail (by Sonographer, verified by radiologist).
- Subject receives DEFINITY dose
- Subject receives destruction-replenishment contrast-enhanced ultrasound scan (under SOP)
- Pause for 30 minutes, allowing subject to stand and move
- Repeat steps 10-12 (once).
- Subject de-identified
- Analyze data.
In part I a single repeat measurement may be made to aide in the optimization of data collection. In part II a single repeat measurement is made to assess short-term intra-subject measurement variability.
In part I and part II, a subject will be asked to return on a separate date (within 1 year of the initial scan) for a repeat procedure using an additional DEFINITY delivery method (bolus or infusion, whichever was not given at the initial visit) or if data collection was not of sufficient quality during the first visit.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Contact
- Name: Morgan Sooy
- Phone Number: 303 724 7526
- Email: morgan.sooy@cuanschutz.edu
Study Contact Backup
- Name: Hali Broncucia
- Phone Number: 303 724 7526
- Email: hali.broncucia@cuanschutz.edu
Study Locations
-
-
Colorado
-
Aurora, Colorado, United States, 80045
- Recruiting
- University of Colorado Anschutz, Barbara Davis Center
-
Contact:
- Hali C Broncucia, MA
- Phone Number: 303-724-7526
- Email: hali.broncucia@cuanschutz.edu
-
Contact:
- Morgan Sooy, MS
- Phone Number: 303-724-5686
- Email: morgan.sooy@cuanschutz.edu
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Male or non-pregnant female age 18-65
- Ability and willingness of patient to participate fully in all aspects of this clinical study
- Written informed consent obtained and documented
Exclusion Criteria:
- Excessive body size preventing effective scan of the pancreas as determined by sonographer
- Evidence of exocrine pancreatic disease, including pancreatitis, cystic fibrosis, pancreatic adenocarcinoma, or neuroendocrine tumor.
- Subjects who are pregnant or breast-feeding
- Subjects incapable of giving assent/informed written consent
- Known or suspected hypersensitivity to perflutren
- Known history or suspected unstable cardiopulmonary conditions (acute myocardial infarction, acute coronary artery syndromes, worsening or unstable congestive heart failure, or serious ventricular arrhythmias)
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Cross-Sectional
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Group 3
T1D subjects.
Part II of study (cross-sectional study)
|
Other Names:
|
Group 1
SOP (healthy) subjects.
Part I of study (optimizing protocol).
|
Other Names:
|
Group 2
Control (healthy and autoantibody positive) subjects.
Part II of study (cross-sectional study)
|
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Primary outcome 1
Time Frame: End of part I (6 months)
|
Optimized a contrast-enhanced ultrasound 'destruction-replenishment' protocol for imaging pancreas blood flow kinetics in adult human subjects.
|
End of part I (6 months)
|
Primary outcome 2
Time Frame: End of part II (1 year)
|
Comparison of pancreas blood flow kinetics (i.e.
'destruction-replenishment' k2 'reperfusion rate' parameter) between control and T1D subjects.
|
End of part II (1 year)
|
Primary outcome 3
Time Frame: End of part II (1 year)
|
Determining inter-subject variability in pancreas blood flow kinetics (i.e. the 'destruction-replenishment' k2 'reperfusion rate' parameter) among control subjects and among T1D subjects
|
End of part II (1 year)
|
Primary outcome 4
Time Frame: End of part II (1 year)
|
Determining reproducibility in the measurement of pancreas blood flow kinetics (i.e. the 'destruction-replenishment' k2 'reperfusion rate' parameter) within subjects.
This will initially focus on short-term intra-subject measurement variability.
|
End of part II (1 year)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Secondary outcome 1
Time Frame: End of part II (1 year)
|
Comparison between control and T1D subjects for other parameters resulting from the measurement of pancreas blood flow kinetics (i.e. the 'destruction-replenishment' 'reperfusion amplitude' A, 'destruction efficiency' 1-B and 'pre-destruction signal' parameters).
|
End of part II (1 year)
|
Secondary outcome 2
Time Frame: End of part II (1 year)
|
Determining inter-subject variability among control subjects and among T1D subjects for other parameters resulting from the measurement of pancreas blood flow kinetics (i.e. the 'destruction-replenishment' 'reperfusion amplitude' A, 'destruction efficiency' 1-B and 'pre-destruction signal' parameters).
|
End of part II (1 year)
|
Secondary outcome 3
Time Frame: End of part II (1 year)
|
Correlation of pancreas blood flow kinetics with blood glucose and HbA1c (to test for a link between the measurement and glucose control).
|
End of part II (1 year)
|
Secondary outcome 4
Time Frame: End of part II (1 year)
|
Comparison of pancreas blood flow kinetics with HLA haplotype or whether subject has first-degree relative with T1D (to test for a link between the measurement and T1D genetic risk).
|
End of part II (1 year)
|
Secondary outcome 5
Time Frame: End of part II (1 year)
|
Comparison of pancreas blood flow kinetics with subject BMI, age, heart rate, blood pressure (to test for a link between the measurement and subject characteristics)
|
End of part II (1 year)
|
Secondary outcome 6
Time Frame: End of part II (1 year)
|
Assessment of subject autoantibodies, c-peptide levels (to ensure subjects free of diabetes do not have islet autoimmunity and to ensure subjects with T1D have islet autoimmunity and residual beta cell mass)
|
End of part II (1 year)
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Richard KP Benninger, PhD, University of Colorado - Anschutz Medical Campus
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 19-1543
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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