Evidence map›Paper›PMID 25071096›Full record

ArticleJournal of nuclear medicine : official publication, Society of Nuclear Medicine2014

Absolute quantitation of myocardial blood flow in human subjects with or without myocardial ischemia using dynamic flurpiridaz F 18 PET.

René R S Packard, Sung-Cheng Huang, Magnus Dahlbom, Johannes Czernin, Jamshid Maddahi

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07761728 (Comparative Evaluation of 18F-Flurpiridaz and 82Rb-Chloride PET Myocardial Perfusion Imaging), which is not on this map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
8.6field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07761728 enrolling by invitationnot on this mapstarted 2025, after this paper: background citation

Comparative Evaluation of 18F-Flurpiridaz and 82Rb-Chloride PET Myocardial Perfusion Imaging: The FLARE (Flurpiridaz vs. Rubidium Evaluation) Trial

TypeobservationalSponsorUniversity of California, Los AngelesRan2025 to 2027Enrolled60ConditionsCoronary Artery Disease, Coronary Microvascular Disease
3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 91 citations in OpenAlex.

  1. Utility ofCirculation. Cardiovascular imaging · 2025
    Trial
  2. Subendocardial quantification enhances coronary artery disease detection inEuropean journal of nuclear medicine and molecular imaging · 2025
    Trial
  3. Automatic motion correction for myocardial blood flow estimation improves diagnostic performance for coronary artery disease inJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2025
    Trial
  4. Trial
  5. Trial
  6. Added value of myocardial blood flow usingJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2021
    Trial
  7. Trial
  8. Evaluation of Myocardial Blood Flow UsingCurrent cardiology reports · 2026
    Review
  9. Dynamic frame-by-frame motion correction forEuropean journal of nuclear medicine and molecular imaging · 2026
    Article
  10. Technical evaluation of immediate back-to-back rest-stress positron emission tomography scanning withJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2025
    Article
  11. The clinical promise ofNature cardiovascular research · 2025
    Article
  12. Expanding the repertoire ofJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2024
    Article
  13. Article
  14. Prevalence and nature of extracardiac findings in PET/CT myocardial perfusion imaging.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2023
    Article
  15. Rest/stress myocardial perfusion imaging by positron emission tomography withJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2023
    Article
  16. Development, diagnostic performance, and interobserver agreement of aJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2022
    Article
  17. Automation in Nuclear Cardiology: Time for Flurpiridaz to Join the Club.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2022
    Article
  18. Review
  19. Article
  20. The "fixed" SPECT MPI defect: Where are we and where should we be going?Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2021
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

René R S PackardDepartment of Medicine (Cardiology), University of California, Los Angeles, California; and.
Sung-Cheng HuangDepartment of Molecular and Medical Pharmacology (Nuclear Medicine), Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California.
Magnus DahlbomDepartment of Molecular and Medical Pharmacology (Nuclear Medicine), Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California.
Johannes CzerninDepartment of Molecular and Medical Pharmacology (Nuclear Medicine), Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California.
Jamshid MaddahiDepartment of Medicine (Cardiology), University of California, Los Angeles, California; and Department of Molecular and Medical Pharmacology (Nuclear Medicine), Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California jmaddahi@mednet.ucla.edu.
University of California, Los Angeles · USRonald Reagan UCLA Medical Center · US

Funding

CARDIOVASCULAR SCIENTIST TRAINING PROGRAMT32HL007895 · NHLBI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI SHIVKUMAR, KALYANAM, WATSON, KAROL E · 1998 to 2023
$9.2M
NHLBI NIH HHS T32 HL007895
6 · The paper itself

Abstract

unlabelledAbsolute quantitation of myocardial blood flow (MBF) by PET is an established method of analyzing coronary artery disease (CAD) but subject to the various shortcomings of available radiotracers. Flurpiridaz F 18 is a novel PET radiotracer that exhibits properties of an ideal tracer.

methodsA new absolute perfusion quantitation method with flurpiridaz was developed, taking advantage of the early kinetics and high first-pass extraction by the myocardium of this radiotracer, and the first-in-human measurements of MBF performed in 7 healthy subjects and 8 patients with documented CAD. PET images with time-activity curves were acquired at rest and during adenosine stress.

resultsIn healthy subjects, regional MBF between coronary artery territories did not differ significantly, leading to a mean global MBF of 0.73 mL/min/g at rest and 2.53 mL/min/g during stress, with a mean global myocardial flow reserve (MFR) of 3.70. CAD vascular territories with <50% stenosis demonstrated a mean MBF of 0.73 at rest and 2.02 during stress, leading to a mean MFR of 2.97. CAD vascular territories with ≥50% stenosis exhibited a mean MBF of 0.86 at rest and 1.43 during stress, leading to a mean MFR of 1.86. Differences in stress MBF and MFR between normal and CAD territories, as well as between <50% and ≥50% stenosis vascular territories, were significant (P < 0.01).

conclusionAbsolute quantitation of MBF in humans with the novel PET radiotracer flurpiridaz is feasible over a wide range of cardiac flow in the presence or absence of stress-inducible myocardial ischemia. The significant decrease in stress MBF and ensuing MFR in CAD territories allows a clear distinction between vascular territories exhibiting stress-inducible myocardial ischemia and those with normal perfusion.

Indexed as

Coronary CirculationFluorine RadioisotopesPyridazinesAgedFemaleHumansMaleMyocardial IschemiaPositron-Emission TomographyBMS 747158-02Fluorine RadioisotopesPyridazinesflurpiridazhumanMBFMFRPET

Identifiers

PMID25071096
PMCPMC4315668
OpenAlexW2144002262

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.