Evidence map›Paper›PMID 33934005›Full record

ArticleMedical image analysis2021

Data-Driven multi-Contrast spectral microstructure imaging with InSpect: INtegrated SPECTral component estimation and mapping.

Paddy J Slator, Jana Hutter, Razvan V Marinescu, Marco Palombo, Laurence H Jackson, Alison Ho, Lucy C Chappell, Mary Rutherford, Joseph V Hajnal, Daniel C Alexander

Abstract read
In one paragraph

Article in Medical image analysis, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

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

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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

10 authors.

Paddy J SlatorCentre for Medical Image Computing, Department of Computer Science, University College London, UK. Electronic address: p.slator@ucl.ac.uk.
Jana HutterCentre for the Developing Brain, Kings College London, London, UK; Biomedical Engineering Department, Kings College London, London, UK.
Razvan V MarinescuCentre for Medical Image Computing, Department of Computer Science, University College London, UK.
Marco PalomboCentre for Medical Image Computing, Department of Computer Science, University College London, UK.
Laurence H JacksonCentre for the Developing Brain, Kings College London, London, UK; Biomedical Engineering Department, Kings College London, London, UK.
Alison HoWomen's Health Department, King's College London, London, UK.
Lucy C ChappellWomen's Health Department, King's College London, London, UK.
Mary RutherfordCentre for the Developing Brain, Kings College London, London, UK.
Joseph V HajnalCentre for the Developing Brain, Kings College London, London, UK; Biomedical Engineering Department, Kings College London, London, UK.
Daniel C AlexanderCentre for Medical Image Computing, Department of Computer Science, University College London, UK.

Funding

Structure and function of the placenta from implantation to delivery: a next generation MRI approachU01HD087202 · NICHD · KING'S COLLEGE LONDON · PI ALEXANDER, DANIEL, ALJABAR, PAUL · 2015 to 2015
$3.2M
Department of Health RP-2014-05-019Medical Research Council MR/T018119/1Medical Research Council MR/T020296/1NICHD NIH HHS U01 HD087202Wellcome Trust 201374/Z/16/ZWellcome Trust 203148/Z/16/Z
6 · The paper itself

Abstract

We introduce and demonstrate an unsupervised machine learning technique for spectroscopic analysis of quantitative MRI experiments. Our algorithm supports estimation of one-dimensional spectra from single-contrast data, and multidimensional correlation spectra from simultaneous multi-contrast data. These spectrum-based approaches allow model-free investigation of tissue properties, but require regularised inversion of a Laplace transform or Fredholm integral, which is an ill-posed calculation. Here we present a method that addresses this limitation in a data-driven way. The algorithm simultaneously estimates a canonical basis of spectral components and voxelwise maps of their weightings, thereby pooling information across whole images to regularise the ill-posed problem. We show in simulations that our algorithm substantially outperforms current voxelwise spectral approaches. We demonstrate the method on multi-contrast diffusion-relaxometry placental MRI scans, revealing anatomically-relevant sub-structures, and identifying dysfunctional placentas. Our algorithm vastly reduces the data required to reliably estimate spectra, opening up the possibility of quantitative MRI spectroscopy in a wide range of new applications. Our InSpect code is available at github.com/paddyslator/inspect.

Indexed as

Diffusion Magnetic Resonance ImagingPlacentaAlgorithmsFemaleHumansMagnetic Resonance ImagingPregnancyDiffusion-relaxation MRIInverse Laplace transformMicrostructure imagingMRIPlacenta MRIQuantitative MRIUnsupervised learning

Identifiers

PMID33934005
PMCPMC8543043

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.