View in EDS HTML Full Text PDF Full Text

Motion-corrected simultaneous cardiac positron emission tomography and coronary MR angiography with high acquisition efficiency.

Saved in:
Bibliographic Details
Title: Motion-corrected simultaneous cardiac positron emission tomography and coronary MR angiography with high acquisition efficiency.
Authors: Munoz, Camila1 camila.munoz@kcl.ac.uk, Neji, Radhouene2, Cruz, Gastão1, Mallia, Andrew1,3, Jeljeli, Sami3, Reader, Andrew J.1, Botnar, Rene M.1,4, Prieto, Claudia1,4
Source: Magnetic Resonance in Medicine. Jan2018, Vol. 79 Issue 1, p339-350. 12p.
Abstract: Purpose Develop a framework for efficient free-breathing simultaneous whole-heart coronary magnetic resonance angiography (CMRA) and cardiac positron emission tomography (PET) on a 3 Tesla PET-MR system. Methods An acquisition that enables nonrigid motion correction of both CMRA and PET has been developed. The proposed method estimates translational motion from low-resolution 2D MR image navigators acquired at each heartbeat and 3D nonrigid respiratory motion between different respiratory bins from the CMRA data itself. Estimated motion is used for correcting the CMRA as well as the emission and attenuation PET data sets to the same respiratory position. The CMRA approach was studied in 10 healthy subjects and compared for both left and right coronary arteries (LCA, RCA) against a reference scan with diaphragmatic navigator gating and tracking. The PET-CMRA approach was tested in 5 oncology patients with 18F-FDG myocardial uptake. PET images were compared against uncorrected and gated PET reconstructions. Results For the healthy subjects, no statistically significant differences in vessel length and sharpness ( P > 0.01) were observed between the proposed approach and the reference acquisition with navigator gating and tracking, although data acquisition was significantly shorter. The proposed approach improved CMRA vessel sharpness by 37.9% and 49.1% (LCA, RCA) and vessel length by 48.0% and 36.7% (LCA, RCA) in comparison with no motion correction for all the subjects. Motion-corrected PET images showed improved sharpness of the myocardium compared to uncorrected reconstructions and reduced noise compared to gated reconstructions. Conclusion Feasibility of a new respiratory motion-compensated simultaneous cardiac PET-CMRA acquisition has been demonstrated. Magn Reson Med 79:339-350, 2018. © 2017 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. [ABSTRACT FROM AUTHOR]
Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 126750031
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Motion-corrected simultaneous cardiac positron emission tomography and coronary MR angiography with high acquisition efficiency.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Munoz%2C+Camila%22">Munoz, Camila</searchLink><relatesTo>1</relatesTo><i> camila.munoz@kcl.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Neji%2C+Radhouene%22">Neji, Radhouene</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Cruz%2C+Gastão%22">Cruz, Gastão</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Mallia%2C+Andrew%22">Mallia, Andrew</searchLink><relatesTo>1,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Jeljeli%2C+Sami%22">Jeljeli, Sami</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Reader%2C+Andrew+J%2E%22">Reader, Andrew J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Botnar%2C+Rene+M%2E%22">Botnar, Rene M.</searchLink><relatesTo>1,4</relatesTo><br /><searchLink fieldCode="AR" term="%22Prieto%2C+Claudia%22">Prieto, Claudia</searchLink><relatesTo>1,4</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Magnetic+Resonance+in+Medicine%22">Magnetic Resonance in Medicine</searchLink>. Jan2018, Vol. 79 Issue 1, p339-350. 12p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose Develop a framework for efficient free-breathing simultaneous whole-heart coronary magnetic resonance angiography (CMRA) and cardiac positron emission tomography (PET) on a 3 Tesla PET-MR system. Methods An acquisition that enables nonrigid motion correction of both CMRA and PET has been developed. The proposed method estimates translational motion from low-resolution 2D MR image navigators acquired at each heartbeat and 3D nonrigid respiratory motion between different respiratory bins from the CMRA data itself. Estimated motion is used for correcting the CMRA as well as the emission and attenuation PET data sets to the same respiratory position. The CMRA approach was studied in 10 healthy subjects and compared for both left and right coronary arteries (LCA, RCA) against a reference scan with diaphragmatic navigator gating and tracking. The PET-CMRA approach was tested in 5 oncology patients with 18F-FDG myocardial uptake. PET images were compared against uncorrected and gated PET reconstructions. Results For the healthy subjects, no statistically significant differences in vessel length and sharpness ( P > 0.01) were observed between the proposed approach and the reference acquisition with navigator gating and tracking, although data acquisition was significantly shorter. The proposed approach improved CMRA vessel sharpness by 37.9% and 49.1% (LCA, RCA) and vessel length by 48.0% and 36.7% (LCA, RCA) in comparison with no motion correction for all the subjects. Motion-corrected PET images showed improved sharpness of the myocardium compared to uncorrected reconstructions and reduced noise compared to gated reconstructions. Conclusion Feasibility of a new respiratory motion-compensated simultaneous cardiac PET-CMRA acquisition has been demonstrated. Magn Reson Med 79:339-350, 2018. © 2017 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=126750031
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/mrm.26690
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 339
    Titles:
      – TitleFull: Motion-corrected simultaneous cardiac positron emission tomography and coronary MR angiography with high acquisition efficiency.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Munoz, Camila
      – PersonEntity:
          Name:
            NameFull: Neji, Radhouene
      – PersonEntity:
          Name:
            NameFull: Cruz, Gastão
      – PersonEntity:
          Name:
            NameFull: Mallia, Andrew
      – PersonEntity:
          Name:
            NameFull: Jeljeli, Sami
      – PersonEntity:
          Name:
            NameFull: Reader, Andrew J.
      – PersonEntity:
          Name:
            NameFull: Botnar, Rene M.
      – PersonEntity:
          Name:
            NameFull: Prieto, Claudia
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 01
              Text: Jan2018
              Type: published
              Y: 2018
          Identifiers:
            – Type: issn-print
              Value: 07403194
          Numbering:
            – Type: volume
              Value: 79
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: Magnetic Resonance in Medicine
              Type: main
ResultId 1