Simultaneous in vivo positron emission tomography and magnetic resonance imaging

Ciprian Catana, Daniel Procissi, Yibao Wu, Martin S. Judenhofer, Jinyi Qi, Bernd J. Pichler, Russell E. Jacobs, Simon R Cherry

Research output: Contribution to journalArticle

214 Citations (Scopus)

Abstract

Positron emission tomography (PET) and magnetic resonance imaging (MRI) are widely used in vivo imaging technologies with both clinical and biomedical research applications. The strengths of MRI include high-resolution, high-contrast morphologic imaging of soft tissues; the ability to image physiologic parameters such as diffusion and changes in oxygenation level resulting from neuronal stimulation; and the measurement of metabolites using chemical shift imaging. PET images the distribution of biologically targeted radiotracers with high sensitivity, but images generally lack anatomic context and are of lower spatial resolution. Integration of these technologies permits the acquisition of temporally correlated data showing the distribution of PET radiotracers and MRI contrast agents or MR-detectable metabolites, with registration to the underlying anatomy. An MRI-compatible PET scanner has been built for biomedical research applications that allows data from both modalities to be acquired simultaneously. Experiments demonstrate no effect of the MRI system on the spatial resolution of the PET system and <10% reduction in the fraction of radioactive decay events detected by the PET scanner inside the MRI. The signal-to-noise ratio and uniformity of the MR images, with the exception of one particular pulse sequence, were little affected by the presence of the PET scanner. In vivo simultaneous PET and MRI studies were performed in mice. Proof-of-principle in vivo MR spectroscopy and functional MRI experiments were also demonstrated with the combined scanner.

Original languageEnglish (US)
Pages (from-to)3705-3710
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume105
Issue number10
DOIs
StatePublished - Mar 25 2008

Fingerprint

Positron-Emission Tomography
Magnetic Resonance Imaging
Biomedical Research
Technology
Signal-To-Noise Ratio
Contrast Media
Anatomy
Magnetic Resonance Spectroscopy

Keywords

  • Molecular imaging
  • Multimodality imaging
  • Small animal imaging

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

Simultaneous in vivo positron emission tomography and magnetic resonance imaging. / Catana, Ciprian; Procissi, Daniel; Wu, Yibao; Judenhofer, Martin S.; Qi, Jinyi; Pichler, Bernd J.; Jacobs, Russell E.; Cherry, Simon R.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 105, No. 10, 25.03.2008, p. 3705-3710.

Research output: Contribution to journalArticle

Catana, Ciprian ; Procissi, Daniel ; Wu, Yibao ; Judenhofer, Martin S. ; Qi, Jinyi ; Pichler, Bernd J. ; Jacobs, Russell E. ; Cherry, Simon R. / Simultaneous in vivo positron emission tomography and magnetic resonance imaging. In: Proceedings of the National Academy of Sciences of the United States of America. 2008 ; Vol. 105, No. 10. pp. 3705-3710.
@article{a69bfd9dd2ba40c594aa9b0ef257e793,
title = "Simultaneous in vivo positron emission tomography and magnetic resonance imaging",
abstract = "Positron emission tomography (PET) and magnetic resonance imaging (MRI) are widely used in vivo imaging technologies with both clinical and biomedical research applications. The strengths of MRI include high-resolution, high-contrast morphologic imaging of soft tissues; the ability to image physiologic parameters such as diffusion and changes in oxygenation level resulting from neuronal stimulation; and the measurement of metabolites using chemical shift imaging. PET images the distribution of biologically targeted radiotracers with high sensitivity, but images generally lack anatomic context and are of lower spatial resolution. Integration of these technologies permits the acquisition of temporally correlated data showing the distribution of PET radiotracers and MRI contrast agents or MR-detectable metabolites, with registration to the underlying anatomy. An MRI-compatible PET scanner has been built for biomedical research applications that allows data from both modalities to be acquired simultaneously. Experiments demonstrate no effect of the MRI system on the spatial resolution of the PET system and <10{\%} reduction in the fraction of radioactive decay events detected by the PET scanner inside the MRI. The signal-to-noise ratio and uniformity of the MR images, with the exception of one particular pulse sequence, were little affected by the presence of the PET scanner. In vivo simultaneous PET and MRI studies were performed in mice. Proof-of-principle in vivo MR spectroscopy and functional MRI experiments were also demonstrated with the combined scanner.",
keywords = "Molecular imaging, Multimodality imaging, Small animal imaging",
author = "Ciprian Catana and Daniel Procissi and Yibao Wu and Judenhofer, {Martin S.} and Jinyi Qi and Pichler, {Bernd J.} and Jacobs, {Russell E.} and Cherry, {Simon R}",
year = "2008",
month = "3",
day = "25",
doi = "10.1073/pnas.0711622105",
language = "English (US)",
volume = "105",
pages = "3705--3710",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
number = "10",

}

TY - JOUR

T1 - Simultaneous in vivo positron emission tomography and magnetic resonance imaging

AU - Catana, Ciprian

AU - Procissi, Daniel

AU - Wu, Yibao

AU - Judenhofer, Martin S.

AU - Qi, Jinyi

AU - Pichler, Bernd J.

AU - Jacobs, Russell E.

AU - Cherry, Simon R

PY - 2008/3/25

Y1 - 2008/3/25

N2 - Positron emission tomography (PET) and magnetic resonance imaging (MRI) are widely used in vivo imaging technologies with both clinical and biomedical research applications. The strengths of MRI include high-resolution, high-contrast morphologic imaging of soft tissues; the ability to image physiologic parameters such as diffusion and changes in oxygenation level resulting from neuronal stimulation; and the measurement of metabolites using chemical shift imaging. PET images the distribution of biologically targeted radiotracers with high sensitivity, but images generally lack anatomic context and are of lower spatial resolution. Integration of these technologies permits the acquisition of temporally correlated data showing the distribution of PET radiotracers and MRI contrast agents or MR-detectable metabolites, with registration to the underlying anatomy. An MRI-compatible PET scanner has been built for biomedical research applications that allows data from both modalities to be acquired simultaneously. Experiments demonstrate no effect of the MRI system on the spatial resolution of the PET system and <10% reduction in the fraction of radioactive decay events detected by the PET scanner inside the MRI. The signal-to-noise ratio and uniformity of the MR images, with the exception of one particular pulse sequence, were little affected by the presence of the PET scanner. In vivo simultaneous PET and MRI studies were performed in mice. Proof-of-principle in vivo MR spectroscopy and functional MRI experiments were also demonstrated with the combined scanner.

AB - Positron emission tomography (PET) and magnetic resonance imaging (MRI) are widely used in vivo imaging technologies with both clinical and biomedical research applications. The strengths of MRI include high-resolution, high-contrast morphologic imaging of soft tissues; the ability to image physiologic parameters such as diffusion and changes in oxygenation level resulting from neuronal stimulation; and the measurement of metabolites using chemical shift imaging. PET images the distribution of biologically targeted radiotracers with high sensitivity, but images generally lack anatomic context and are of lower spatial resolution. Integration of these technologies permits the acquisition of temporally correlated data showing the distribution of PET radiotracers and MRI contrast agents or MR-detectable metabolites, with registration to the underlying anatomy. An MRI-compatible PET scanner has been built for biomedical research applications that allows data from both modalities to be acquired simultaneously. Experiments demonstrate no effect of the MRI system on the spatial resolution of the PET system and <10% reduction in the fraction of radioactive decay events detected by the PET scanner inside the MRI. The signal-to-noise ratio and uniformity of the MR images, with the exception of one particular pulse sequence, were little affected by the presence of the PET scanner. In vivo simultaneous PET and MRI studies were performed in mice. Proof-of-principle in vivo MR spectroscopy and functional MRI experiments were also demonstrated with the combined scanner.

KW - Molecular imaging

KW - Multimodality imaging

KW - Small animal imaging

UR - http://www.scopus.com/inward/record.url?scp=41649088048&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41649088048&partnerID=8YFLogxK

U2 - 10.1073/pnas.0711622105

DO - 10.1073/pnas.0711622105

M3 - Article

VL - 105

SP - 3705

EP - 3710

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 10

ER -