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F-18 Rhodamine 6G PET Imaging for Myocardial Blood Flow

Primary Purpose

Coronary Artery Disease

Status
Suspended
Phase
Early Phase 1
Locations
United States
Study Type
Interventional
Intervention
Rhodamine 6G
Sponsored by
Washington University School of Medicine
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional diagnostic trial for Coronary Artery Disease

Eligibility Criteria

21 Years - 75 Years (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  • Male and female, 21-75 years of age and any race.
  • Capable of giving written informed consent.
  • "Healthy adult volunteer subject" is someone who is volunteering to undergo imaging procedures and based on screening procedures has no known significant health problems.
  • Stable patients with known or suspected coronary artery disease that are scheduled to have or have undergone a clinically indicated conventional rest/stress SPECT MPI and no intervention between SPECT and PET.
  • Female subjects must not be pregnant or lactating.

Exclusion Criteria:

  • Has any condition that, in the opinion of the Sponsor-Investigator or designee could increase risk to the subject, limit the subject's ability to tolerate the research procedures, or interfere with collection of the data.
  • Have abnormal findings on any screening/baseline procedure, e.g. physical examination, laboratory tests, electrocardiogram that suggest the subject might have a condition that could, in the opinion of the Sponsor-Investigator, affect the subject's response to the radiopharmaceutical or related research procedures.
  • Is deemed likely to be unable to perform all research procedures for any reason, (e.g., subjects unable to lie still or inability to tolerate up to 60 minutes in a supine position with arms up during the PET imaging procedures due to chronic back/shoulder pain or arthritis as assessed by physical examination and medical history).
  • Has a history of hypersensitivity to Fluorine-18 or other radiopharmaceutical or any of its excipients.
  • Have contraindications to cardiovascular PET/CT imaging such as claustrophobia.
  • Have high blood pressure (>200/110)
  • Have Epilepsy
  • Have major kidney or liver problems
  • Have current or past history of major medical illness
  • Currently using recreational drugs
  • Body weight of > 300 lbs. (weight limit of the PET/CT table)
  • Stable Cardiac Disease: Rest/Stress Group only:

    • Cardiac patients who suffer an intervening clinical event such as worsening angina pectoris or myocardial infarction or whom undergo a myocardial revascularization procedure or have myocardial ischemia at rest.
    • Sinus node disease (e.g. SA block) or symptomatic bradycardia, second or third degree atrioventricular (AV) block.
    • Pre-existing obstructive lung disease (e.g. asthma) that precludes the safe administration of the pharmacological stressor according to the approved label.
    • Uncontrolled and severe hypertension (e.g. systolic blood pressure >200 mmHg, diastolic blood pressure >110 mmHg).
    • Baseline hypotension (e.g. systolic blood pressure < 90 mmHg, diastolic blood pressure <50 mmHg).
    • Seizures
    • The use of caffeine, nicotine or over the counter cold medicines within 12 hours prior to stress imaging day with regadenoson.
    • The theophylline-based medications or dipyridamole within 48 hours prior to each imaging day.

Sites / Locations

  • Washington University School of Medicine

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Active Comparator

Arm Label

Dosimetry group

Stable Heart Patients

Arm Description

Patients in the dosimetry group will be imaged with the radio-pharmaceutical Rhodamine 6G at different time points. 0-120, 30-150, 60-180

Stable heart patients will be given a rest/stress PET/CT with Rhodamine 6G myocardial perfusion study to determine myocardial blood flow

Outcomes

Primary Outcome Measures

Dosimetry group
Evaluate both image quality and myocardial blood flow at different imaging time points. Image quality provides higher count Density and high spatial resolution, which makes it easier to see the heart vessels, and myocardial blood flow is measured in mL/g/min. Both measurements will be agregated to arrive at one reported value helps determine the balance of heart disease and in small and large vessels

Secondary Outcome Measures

Stable Heart Patients
Determine myocardial blood flow in stable heart patients. Myocardial blood flow is measured in mL/g/min which can show normal blood flow with stable patients.

Full Information

First Posted
August 13, 2020
Last Updated
August 23, 2022
Sponsor
Washington University School of Medicine
Collaborators
Boston Children's Hospital
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1. Study Identification

Unique Protocol Identification Number
NCT04528758
Brief Title
F-18 Rhodamine 6G PET Imaging for Myocardial Blood Flow
Official Title
Preliminary Evaluation of F-18 Rhodamine 6G in Healthy Individuals and Patients With Stable Heart Condition
Study Type
Interventional

2. Study Status

Record Verification Date
August 2022
Overall Recruitment Status
Suspended
Why Stopped
re-evaluation of radiotracer
Study Start Date
October 16, 2018 (Actual)
Primary Completion Date
June 2024 (Anticipated)
Study Completion Date
December 2024 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Washington University School of Medicine
Collaborators
Boston Children's Hospital

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
Use of novel radio-pharmaceutical Rhodamine 6G to determine myocardial blood flow
Detailed Description
Using Rhodamine 6G to determine myocardial blood flow in normal volunteers and patients with coronary heart disease.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Coronary Artery Disease

7. Study Design

Primary Purpose
Diagnostic
Study Phase
Early Phase 1
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
15 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Dosimetry group
Arm Type
Experimental
Arm Description
Patients in the dosimetry group will be imaged with the radio-pharmaceutical Rhodamine 6G at different time points. 0-120, 30-150, 60-180
Arm Title
Stable Heart Patients
Arm Type
Active Comparator
Arm Description
Stable heart patients will be given a rest/stress PET/CT with Rhodamine 6G myocardial perfusion study to determine myocardial blood flow
Intervention Type
Drug
Intervention Name(s)
Rhodamine 6G
Other Intervention Name(s)
PET/positron Emission Tomography imaging
Intervention Description
Rhodamine 6G radio-pharmaceutical will be injected to determine myocardial blood flow
Primary Outcome Measure Information:
Title
Dosimetry group
Description
Evaluate both image quality and myocardial blood flow at different imaging time points. Image quality provides higher count Density and high spatial resolution, which makes it easier to see the heart vessels, and myocardial blood flow is measured in mL/g/min. Both measurements will be agregated to arrive at one reported value helps determine the balance of heart disease and in small and large vessels
Time Frame
1-2 days
Secondary Outcome Measure Information:
Title
Stable Heart Patients
Description
Determine myocardial blood flow in stable heart patients. Myocardial blood flow is measured in mL/g/min which can show normal blood flow with stable patients.
Time Frame
1-2 days

10. Eligibility

Sex
All
Minimum Age & Unit of Time
21 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Male and female, 21-75 years of age and any race. Capable of giving written informed consent. "Healthy adult volunteer subject" is someone who is volunteering to undergo imaging procedures and based on screening procedures has no known significant health problems. Stable patients with known or suspected coronary artery disease that are scheduled to have or have undergone a clinically indicated conventional rest/stress SPECT MPI and no intervention between SPECT and PET. Female subjects must not be pregnant or lactating. Exclusion Criteria: Has any condition that, in the opinion of the Sponsor-Investigator or designee could increase risk to the subject, limit the subject's ability to tolerate the research procedures, or interfere with collection of the data. Have abnormal findings on any screening/baseline procedure, e.g. physical examination, laboratory tests, electrocardiogram that suggest the subject might have a condition that could, in the opinion of the Sponsor-Investigator, affect the subject's response to the radiopharmaceutical or related research procedures. Is deemed likely to be unable to perform all research procedures for any reason, (e.g., subjects unable to lie still or inability to tolerate up to 60 minutes in a supine position with arms up during the PET imaging procedures due to chronic back/shoulder pain or arthritis as assessed by physical examination and medical history). Has a history of hypersensitivity to Fluorine-18 or other radiopharmaceutical or any of its excipients. Have contraindications to cardiovascular PET/CT imaging such as claustrophobia. Have high blood pressure (>200/110) Have Epilepsy Have major kidney or liver problems Have current or past history of major medical illness Currently using recreational drugs Body weight of > 300 lbs. (weight limit of the PET/CT table) Stable Cardiac Disease: Rest/Stress Group only: Cardiac patients who suffer an intervening clinical event such as worsening angina pectoris or myocardial infarction or whom undergo a myocardial revascularization procedure or have myocardial ischemia at rest. Sinus node disease (e.g. SA block) or symptomatic bradycardia, second or third degree atrioventricular (AV) block. Pre-existing obstructive lung disease (e.g. asthma) that precludes the safe administration of the pharmacological stressor according to the approved label. Uncontrolled and severe hypertension (e.g. systolic blood pressure >200 mmHg, diastolic blood pressure >110 mmHg). Baseline hypotension (e.g. systolic blood pressure < 90 mmHg, diastolic blood pressure <50 mmHg). Seizures The use of caffeine, nicotine or over the counter cold medicines within 12 hours prior to stress imaging day with regadenoson. The theophylline-based medications or dipyridamole within 48 hours prior to each imaging day.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Robert Gropler, MD
Organizational Affiliation
Washington University School of Medicine
Official's Role
Principal Investigator
Facility Information:
Facility Name
Washington University School of Medicine
City
Saint Louis
State/Province
Missouri
ZIP/Postal Code
63110
Country
United States

12. IPD Sharing Statement

Plan to Share IPD
Undecided

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F-18 Rhodamine 6G PET Imaging for Myocardial Blood Flow

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