Design, Implementation, and Evaluation of a Head and Neck MRI RF Array Integrated with a 511 keV Transmission Source for Attenuation Correction in PET/MR.
3 Tesla
PET/MR
attenuation correction
radiofrequency coil
receive-only array
Journal
Sensors (Basel, Switzerland)
ISSN: 1424-8220
Titre abrégé: Sensors (Basel)
Pays: Switzerland
ID NLM: 101204366
Informations de publication
Date de publication:
26 07 2019
26 07 2019
Historique:
received:
26
04
2019
revised:
23
07
2019
accepted:
25
07
2019
entrez:
31
7
2019
pubmed:
31
7
2019
medline:
11
1
2020
Statut:
epublish
Résumé
The goal of this work is to further improve positron emission tomography (PET) attenuation correction and magnetic resonance (MR) sensitivity for head and neck applications of PET/MR. A dedicated 24-channel receive-only array, fully-integrated with a hydraulic system to move a transmission source helically around the patient and radiofrequency (RF) coil array, is designed, implemented, and evaluated. The device enables the calculation of attenuation coefficients from PET measurements at 511 keV including the RF coil and the particular patient. The RF coil design is PET-optimized by minimizing photon attenuation from coil components and housing. The functionality of the presented device is successfully demonstrated by calculating the attenuation map of a water bottle based on PET transmission measurements; results are in excellent agreement with reference values. It is shown that the device itself has marginal influence on the static magnetic field B
Identifiants
pubmed: 31357545
pii: s19153297
doi: 10.3390/s19153297
pmc: PMC6696210
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Austrian Science Fund FWF
ID : P 27853
Pays : Austria
Organisme : Austrian Science Fund
ID : P27853-B30
Pays : International
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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