Evidence map›Paper›PMID 34544074›Full record

ArticlePhysics in medicine and biology2021

Quantitative accuracy in total-body imaging using the uEXPLORER PET/CT scanner.

Edwin K Leung, Eric Berg, Negar Omidvari, Benjamin A Spencer, Elizabeth Li, Yasser G Abdelhafez, Jeffrey P Schmall, Weiping Liu, Liuchun He, Songsong Tang and 5 more

Abstract read
In one paragraph

Article in Physics in medicine and biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed.

  1. Quantitative Accuracy Assessment of the NeuroEXPLORER for Diverse Imaging Applications: Moving Beyond Standard Evaluations.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2025
    Article
  2. Review
  3. Review
  4. Review
  5. Review
  6. Total-Body Perfusion Imaging with [Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2023
    Article
  7. Article
  8. Article
  9. High-Temporal-Resolution Lung Kinetic Modeling Using Total-Body Dynamic PET with Time-Delay and Dispersion Corrections.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2023
    Article
  10. Will extended field-of-view PET/CT depopulate the graveyard of failed PET radiopharmaceuticals?Cancer imaging : the official publication of the International Cancer Imaging Society · 2022
    Review
  11. Efficient Delay Correction for Total-Body PET Kinetic Modeling Using Pulse Timing Methods.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2022
    Article
  12. Review
  13. Radioembolization Dosimetry with Total-BodyJournal of nuclear medicine : official publication, Society of Nuclear Medicine · 2022
    Article
  14. RelatingPhysics in medicine and biology · 2022
    Article
  15. Review
  16. 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

15 authors.

Edwin K LeungDepartment of Radiology, UC Davis Health, Sacramento, CA, United States of America.
Eric BergDepartment of Biomedical Engineering, University of California, Davis, Davis, CA, United States of America.
Negar OmidvariDepartment of Biomedical Engineering, University of California, Davis, Davis, CA, United States of America.ORCID 0000-0002-7589-4745
Benjamin A SpencerDepartment of Radiology, UC Davis Health, Sacramento, CA, United States of America.
Elizabeth LiDepartment of Biomedical Engineering, University of California, Davis, Davis, CA, United States of America.ORCID 0000-0003-2365-0594
Yasser G AbdelhafezDepartment of Radiology, UC Davis Health, Sacramento, CA, United States of America.
Jeffrey P SchmallUIH America Inc., Houston, TX, United States of America.
Weiping LiuShanghai United Imaging Healthcare Co. Ltd, Shanghai, People's Republic of China.
Liuchun HeShanghai United Imaging Healthcare Co. Ltd, Shanghai, People's Republic of China.
Songsong TangShanghai United Imaging Healthcare Co. Ltd, Shanghai, People's Republic of China.
Yilin LiuShanghai United Imaging Healthcare Co. Ltd, Shanghai, People's Republic of China.
Yun DongShanghai United Imaging Healthcare Co. Ltd, Shanghai, People's Republic of China.
Terry JonesDepartment of Radiology, UC Davis Health, Sacramento, CA, United States of America.
Simon R CherryDepartment of Radiology, UC Davis Health, Sacramento, CA, United States of America.
Ramsey D BadawiDepartment of Radiology, UC Davis Health, Sacramento, CA, United States of America.

Funding

Staff InvestigatorsP30CA093373 · NCI · UNIVERSITY OF CALIFORNIA DAVIS · PI Gina M Dayton · 2002 to 2026
$84.9M
EXPLORER: Changing the Molecular Imaging Paradigm with Total Body PETR01CA206187 · NCI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BADAWI, RAMSEY D., CHERRY, SIMON R · 2015 to 2019
$15.5M
Basic applications for total-body PET in oncologyR01CA249422 · NCI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BADAWI, RAMSEY D., NARDO, LORENZO · 2019 to 2023
$3.1M
NCI NIH HHS P30 CA093373NCI NIH HHS R01 CA206187NCI NIH HHS R01 CA249422
6 · The paper itself

Abstract

Absolute quantification of regional tissue concentration of radioactivity in positron emission tomography (PET) is a critical parameter-of-interest across various clinical and research applications and is affected by a complex interplay of factors including scanner calibration, data corrections, and image reconstruction. The emergence of long axial field-of-view (FOV) PET systems widens the dynamic range accessible to PET and creates new opportunities in reducing scan time and radiation dose, delayed or low radioactivity imaging, as well as kinetic modeling of the entire human. However, these imaging regimes impose challenging conditions for accurate quantification due to constraints from image reconstruction, low count conditions, as well as large and rapidly changing radioactivity distribution across a large axial FOV. We comprehensively evaluated the quantitative accuracy of the uEXPLORER total-body scanner in conditions that encompass existing and potential imaging applications (such as dynamic imaging and ultralow-dose imaging) using a set of total-body specific phantom and human measurements. Through these evaluations we demonstrated a relative count rate accuracy of ±3%-4% using the NEMA NU 2-2018 protocol, an axial uniformity spread of ±3% across the central 90% axial FOV, and a 3% activity bias spread from 17 to 474 MBq

Indexed as

Positron-Emission TomographyPositron Emission Tomography Computed TomographyFluorodeoxyglucose F18HumansPhantoms, ImagingTomography Scanners, X-Ray ComputedFluorodeoxyglucose F18EXPLORERPETquantificationtotal-body

Identifiers

PMID34544074
PMCPMC8585520

What OpenQuestion holds

Textmetadata
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Read underepoch 390

Registered trials

None linked

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.