Evidence map›Paper›PMID 22760344›Full record

ArticleEuropean radiology2012

Spectral CT of carotid atherosclerotic plaque: comparison with histology.

R Zainon, J P Ronaldson, T Janmale, N J Scott, T M Buckenham, A P H Butler, P H Butler, R M Doesburg, S P Gieseg, J A Roake and 1 more

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in European radiology, 2012. 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
4.1field-weighted citation impact, top 6% 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.

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, 68 citations in OpenAlex.

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  15. Beam profile assessment in spectral CT scanners.Journal of applied clinical medical physics · 2018
    Article
  16. Article
  17. Article
  18. Nanoparticles for Cardiovascular Imaging and Therapeutic Delivery, Part 1: Compositions and Features.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2015
    Review
  19. Photon-counting Detector CT: System Design and Clinical Applications of an Emerging Technology.Radiographics : a review publication of the Radiological Society of North America, Inc
    Review
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

11 authors at 3 institutions in 2 countries.

R ZainonDepartment of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand.
J P Ronaldson
T Janmale
N J Scott
T M Buckenham
A P H Butler
P H Butler
R M Doesburg
S P Gieseg
J A Roake
N G Anderson
University of Canterbury · NZUniversity of Otago · NZChristchurch Hospital · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo distinguish components of vulnerable atherosclerotic plaque by imaging their energy response using spectral CT and comparing images with histology.

methodsAfter spectroscopic calibration using phantoms of plaque surrogates, excised human carotid atherosclerotic plaques were imaged using MARS CT using a photon-processing detector with a silicon sensor layer and microfocus X-ray tube (50 kVp, 0.5 mA) at 38-μm voxel size. The plaques were imaged, sectioned and re-imaged using four threshold energies: 10, 16, 22 and 28 keV; then sequentially stained with modified Von Kossa, Perl's Prussian blue and Oil-Red O, and photographed. Relative Hounsfield units across the energies were entered into a linear algebraic material decomposition model to identify the unknown plaque components.

resultsLipid, calcium, iron and water-like components of plaque have distinguishable energy responses to X-ray, visible on spectral CT images. CT images of the plaque surface correlated very well with histological photographs. Calcium deposits (>1,000 μm) in plaque are larger than iron deposits (<100 μm), but could not be distinguished from each other within the same voxel using the energy range available.

conclusionsSpectral CT displays energy information in image form at high spatial resolution, enhancing the intrinsic contrast of lipid, calcium and iron within atheroma. KEY POINTS: Spectral computed tomography offers new insights into tissue characterisation. Components of vulnerable atherosclerotic plaque are spectrally distinct with intrinsic contrast. Spectral CT of excised atherosclerotic plaques can display iron, calcium and lipid. Calcium deposits are larger than iron deposits in atheroma. Spectral CT may help in the non-invasive detection of vulnerable plaques.

Indexed as

CalciumCarotid Artery DiseasesContrast MediaHumansIn Vitro TechniquesIohexolIronLipid MetabolismPhantoms, ImagingPlaque, AtheroscleroticRadiographic Image Interpretation, Computer-AssistedStaining and LabelingTomography, X-Ray ComputedCalciumContrast MediaIohexoliopromideIron

Identifiers

PMID22760344
OpenAlexW2084109496

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.