Evidence map›Paper›PMID 31691134›Full record

ArticleJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology2020

The current status of quantitative SPECT/CT in the assessment of transthyretin cardiac amyloidosis.

Stuart C Ramsay, Claire Cuscaden

Abstract readEditorialComment
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In one paragraph

Article in Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. QuantitativeEuropean journal of nuclear medicine and molecular imaging · 2026
    Article
  3. Impact of disease-modifying therapy on [European journal of nuclear medicine and molecular imaging · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Quantitative technetium pyrophosphate and cardiovascular magnetic resonance in patients with suspected cardiac amyloidosis.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2022
    Article
  9. Article
  10. Comparison of planar with tomographic pyrophosphate scintigraphy for transthyretin cardiac amyloidosis: Perils and pitfalls.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2021
    Article
  11. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors.

Stuart C RamsayNuclear Medicine and PET, Royal Brisbane and Women's Hospital, Herston, QLD, Australia. stuart.ramsay1@jcu.edu.au.
Claire CuscadenDepartment of Medical Imaging, Princess Alexandra Hospital, Wooloongabba, QLD, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nuclear medicine bone scans differentiate ATTR cardiomyopathy (ATTR-CM) from light chain cardiac amyloidosis and other myocardial disorders, helping to make the diagnosis without biopsy. Standard bone scans are not absolutely quantitative, so are assessed by comparing the heart to other tissues. The standard visual scoring system compares heart to bone. This accurately diagnoses ATTR-CM and has been validated in a multicenter study, but has limitations. Semiquantitative techniques including heart/contralateral thorax (H/CL) and heart/whole body ratio (H/WB) improve on visual scoring but still rely on extracardiac sites as comparators. Absolute quantitation of myocardial uptake using quantitative SPECT should help overcome these shortcomings. In ATTR-CM, this technique is practical, accurately makes the diagnosis and provides information that is not identical to visual scores. However, more work needs to be done. The reproducibility in ATTR-CM must be tested. Larger studies need to be undertaken to determine whether quantitative SPECT measurements can assess prognosis, disease progression or treatment response. As ATTR-CM is relatively uncommon multicenter trials will help recruit enough subjects to answer these questions. Accurate measurement techniques are needed in ATTR-CM to enable appropriate use of proven therapy and to conduct trials of new therapeutic agents. Quantitative bone scans offer a promising avenue.

Indexed as

AmyloidosisPrealbuminFeasibility StudiesHumansReproducibility of ResultsTomography, Emission-Computed, Single-PhotonTomography, X-Ray ComputedPrealbuminBone scanQuantitationTransthyretin cardiac amyloidosis

Identifiers

What OpenQuestion holds

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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.