Evidence map›Paper›PMID 33388972›Full record

ArticleEuropean journal of nuclear medicine and molecular imaging2021

NEMA NU2-2012 performance measurements of the United Imaging uPMR790: an integrated PET/MR system.

Shuguang Chen, Yushen Gu, Haojun Yu, Xin Chen, Tuoyu Cao, Lingzhi Hu, Hongcheng Shi

Abstract read
PubMed Publisher
In one paragraph

Article in European journal of nuclear medicine and molecular imaging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

  1. (Hybrid) SPECT and PET Technologies.Recent results in cancer research. Fortschritte der Krebsforschung. Progres dans les recherches sur le cancer · 2026
    Review
  2. Multi-tracer PET and MR imaging visualize distinct metabolic and inflammatory profiles in the white matter of NMOSD and MOGAD.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Article
  3. MultiparametricLa Radiologia medica · 2025
    Article
  4. Timing Performance with Broadcom Metal Trench Silicon Photomultipliers.IEEE transactions on radiation and plasma medical sciences · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Amide proton transfer-weighted imaging and stretch-exponential model DWI basedCancer imaging : the official publication of the International Cancer Imaging Society · 2024
    Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. The effect of modern PET technology and techniques on the EANM paediatric dosage card.European journal of nuclear medicine and molecular imaging · 2022
    Article
  16. Article
  17. Article
  18. Article
  19. 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

7 authors.

Shuguang ChenZhongshan Hospital, Fudan University, 1609 Xietu Road, Shanghai, 200032, China.
Yushen GuZhongshan Hospital, Fudan University, 1609 Xietu Road, Shanghai, 200032, China.
Haojun YuZhongshan Hospital, Fudan University, 1609 Xietu Road, Shanghai, 200032, China.
Xin ChenUnited Imaging Healthcare Co., Ltd., Shanghai, China.
Tuoyu CaoUnited Imaging Healthcare Co., Ltd., Shanghai, China.
Lingzhi HuUnited Imaging Healthcare Co., Ltd., Shanghai, China.
Hongcheng ShiZhongshan Hospital, Fudan University, 1609 Xietu Road, Shanghai, 200032, China. shihongcheng163@163.com.ORCID http://orcid.org/0000-0003-1922-1359

Funding

Shanghai Municipal Key Clinical Specialty shslczdzk03401Shanghai Science and Technology Commission "Science and Technology Innovation Action Plan" in the Field of Cooperation in the Field Of Industry, Education and Research 19DZ1930700Supported by National Key Research and Development Plan "Digital Diagnosis and Treatment Equipment Research And Development" 2016YFC0103900
6 · The paper itself

Abstract

purposeIn this paper, we aimed to evaluate the positron emission tomography (PET) performance of, to the best of our knowledge, the third commercially available whole-body integrated PET/magnetic resonance (MR) system.

methodsThe PET system performance was measured following the NEMA standards with and without simultaneous MR operation. PET spatial resolution, sensitivity, scatter fraction, count-rate performance, accuracy of count losses and random corrections, image quality, and time-of-flight (TOF) resolution were quantitatively evaluated. Clinical scans were acquired at the PET/MR system and compared with images acquired at a PET/CT with the same digital detector technology.

resultsMeasurement results of essential PET performance were reported in the form of MR idle (MR pulsing). The axial, radial, and tangential spatial resolutions were measured as 2.72 mm (2.73 mm), 2.86 mm (2.85 mm), and 2.81 mm (2.82 mm) FWHM, respectively, at 1 cm radial offset. The NECR peak was measured as 129.2 kcps (129.5 kcps) at 14.7 kBq mL

conclusionThe PET performance of the newly introduced integrated PET/MR system is not significantly affected by the simultaneous operation of an MR sequence (2-point DIXON sequence). Measurement results demonstrate comparable performance with other state-of-the-art PET/MR systems. The clinical benefits of high spatial resolution and long axial coverage remain to be further evaluated in specific clinical imaging applications.

Indexed as

Positron-Emission TomographyPositron Emission Tomography Computed TomographyHumansMagnetic Resonance SpectroscopyPhantoms, ImagingReference StandardsNEMA NU2-2012Performance evaluationPET/MR

Identifiers

What OpenQuestion holds

Textmetadata
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.