Evidence map›Paper›PMID 32219492›Full record

ArticleEuropean journal of nuclear medicine and molecular imaging2020

Deep learning-based attenuation map generation for myocardial perfusion SPECT.

Luyao Shi, John A Onofrey, Hui Liu, Yi-Hwa Liu, Chi Liu

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In one paragraph

Article in European journal of nuclear medicine and molecular imaging, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
8.9field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

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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

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3 · Its place in the literature

Who cites it

59 citing papers in PubMed, 120 citations in OpenAlex.

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  6. Attenuation correction of cardiacEJNMMI physics · 2026
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

5 authors at 1 institution in 2 countries.

Luyao ShiDepartment of Biomedical Engineering, Yale University, New Haven, CT, USA.
John A OnofreyDepartment of Radiology and Biomedical Imaging, Yale University, New Haven, CT, USA.
Hui LiuDepartment of Radiology and Biomedical Imaging, Yale University, New Haven, CT, USA.
Yi-Hwa LiuDepartment of Internal Medicine (Cardiology), Yale University, New Haven, CT, USA.
Chi LiuDepartment of Biomedical Engineering, Yale University, New Haven, CT, USA. chi.liu@yale.edu.
Yale University · US

Funding

Low-dose SPECT/CT for imaging chemotherapy-induced microvascular cardiotoxicityR01HL123949 · NHLBI · YALE UNIVERSITY · PI LIU, CHI · 2014 to 2018
$3.2M
American Heart Association 18PRE33990138NHLBI NIH HHS R01 HL123949
6 · The paper itself

Abstract

purposeAttenuation correction using CT transmission scanning increases the accuracy of single-photon emission computed tomography (SPECT) and enables quantitative analysis. Current existing SPECT-only systems normally do not support transmission scanning and therefore scans on these systems are susceptible to attenuation artifacts. Moreover, the use of CT scans also increases radiation dose to patients and significant artifacts can occur due to the misregistration between the SPECT and CT scans as a result of patient motion. The purpose of this study is to develop an approach to estimate attenuation maps directly from SPECT emission data using deep learning methods.

methodsBoth photopeak window and scatter window SPECT images were used as inputs to better utilize the underlying attenuation information embedded in the emission data. The CT-based attenuation maps were used as labels with which cardiac SPECT/CT images of 65 patients were included for training and testing. We implemented and evaluated deep fully convolutional neural networks using both standard training and training using an adversarial strategy.

resultsThe synthetic attenuation maps were qualitatively and quantitatively consistent with the CT-based attenuation map. The globally normalized mean absolute error (NMAE) between the synthetic and CT-based attenuation maps were 3.60% ± 0.85% among the 25 testing subjects. The SPECT reconstructed images corrected using the CT-based attenuation map and synthetic attenuation map are highly consistent. The NMAE between the reconstructed SPECT images that were corrected using the synthetic and CT-based attenuation maps was 0.26% ± 0.15%, whereas the localized absolute percentage error was 1.33% ± 3.80% in the left ventricle (LV) myocardium and 1.07% ± 2.58% in the LV blood pool.

conclusionWe developed a deep convolutional neural network to estimate attenuation maps for SPECT directly from the emission data. The proposed method is capable of generating highly reliable attenuation maps to facilitate attenuation correction for SPECT-only scanners for myocardial perfusion imaging.

Indexed as

Deep LearningArtifactsHumansImage Processing, Computer-AssistedPerfusionTomography, Emission-Computed, Single-PhotonTomography, X-Ray ComputedDeep learningMyocardial perfusion imagingSPECTSynthetic attenuation map

Identifiers

PMID32219492
OpenAlexW3012956770

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Registered trials

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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.