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Article: Multichannel transceiver dual-tuned RF coil for proton/sodium MR imaging of knee cartilage at 3 T

TitleMultichannel transceiver dual-tuned RF coil for proton/sodium MR imaging of knee cartilage at 3 T
Authors
KeywordsDual-tuned coil
Multitransceiver coil
Sodium MR imaging
Issue Date2012
Citation
Magnetic Resonance Imaging, 2012, v. 30, n. 4, p. 562-571 How to Cite?
AbstractSodium magnetic resonance (MR) imaging is a promising technique for detecting changes of proteoglycan (PG) content in cartilage associated with knee osteoarthritis. Despite its potential clinical benefit, sodium MR imaging in vivo is challenging because of intrinsically low sodium concentration and low MR signal sensitivity. Some of the challenges in sodium MR imaging may be eliminated by the use of a high-sensitivity radiofrequency (RF) coil, specifically, a dual-tuned (DT) proton/sodium RF coil which facilitates the co-registration of sodium and proton MR images and the evaluation of both physiochemical and structural properties of knee cartilage. Nevertheless, implementation of a DT proton/sodium RF coil is technically difficult because of the coupling effect between the coil elements (particularly at high field) and the required compact design with improved coil sensitivity. In this study, we applied a multitransceiver RF coil design to develop a DT proton/sodium coil for knee cartilage imaging at 3 T. With the new design, the size of the coil was minimized, and a high signal-to-noise ratio (SNR) was achieved. DT coil exhibited high levels of reflection S11 (~-21 dB) and transmission coefficient S12 (~-19 dB) for both the proton and sodium coils. High SNR (range 27-38) and contrast-to-noise ratio (CNR) (range 15-21) were achieved in sodium MR imaging of knee cartilage in vivo at 3-mm 3 isotropic resolution. This DT coil performance was comparable to that measured using a sodium-only birdcage coil (SNR of 28 and CNR of 20). Clinical evaluation of the DT coil on four normal subjects demonstrated a consistent acquisition of high-resolution proton images and measurement of relative sodium concentrations of knee cartilages without repositioning of the subjects during the same MR scanning session. © 2012 Elsevier Inc.
Persistent Identifierhttp://hdl.handle.net/10722/316063
ISSN
2023 Impact Factor: 2.1
2023 SCImago Journal Rankings: 0.647
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKim, Jung Hwan-
dc.contributor.authorMoon, Chan Hong-
dc.contributor.authorPark, Bum Woo-
dc.contributor.authorFurlan, Alessandro-
dc.contributor.authorZhao, Tiejun-
dc.contributor.authorBae, Kyongtae T.-
dc.date.accessioned2022-08-24T15:49:07Z-
dc.date.available2022-08-24T15:49:07Z-
dc.date.issued2012-
dc.identifier.citationMagnetic Resonance Imaging, 2012, v. 30, n. 4, p. 562-571-
dc.identifier.issn0730-725X-
dc.identifier.urihttp://hdl.handle.net/10722/316063-
dc.description.abstractSodium magnetic resonance (MR) imaging is a promising technique for detecting changes of proteoglycan (PG) content in cartilage associated with knee osteoarthritis. Despite its potential clinical benefit, sodium MR imaging in vivo is challenging because of intrinsically low sodium concentration and low MR signal sensitivity. Some of the challenges in sodium MR imaging may be eliminated by the use of a high-sensitivity radiofrequency (RF) coil, specifically, a dual-tuned (DT) proton/sodium RF coil which facilitates the co-registration of sodium and proton MR images and the evaluation of both physiochemical and structural properties of knee cartilage. Nevertheless, implementation of a DT proton/sodium RF coil is technically difficult because of the coupling effect between the coil elements (particularly at high field) and the required compact design with improved coil sensitivity. In this study, we applied a multitransceiver RF coil design to develop a DT proton/sodium coil for knee cartilage imaging at 3 T. With the new design, the size of the coil was minimized, and a high signal-to-noise ratio (SNR) was achieved. DT coil exhibited high levels of reflection S11 (~-21 dB) and transmission coefficient S12 (~-19 dB) for both the proton and sodium coils. High SNR (range 27-38) and contrast-to-noise ratio (CNR) (range 15-21) were achieved in sodium MR imaging of knee cartilage in vivo at 3-mm 3 isotropic resolution. This DT coil performance was comparable to that measured using a sodium-only birdcage coil (SNR of 28 and CNR of 20). Clinical evaluation of the DT coil on four normal subjects demonstrated a consistent acquisition of high-resolution proton images and measurement of relative sodium concentrations of knee cartilages without repositioning of the subjects during the same MR scanning session. © 2012 Elsevier Inc.-
dc.languageeng-
dc.relation.ispartofMagnetic Resonance Imaging-
dc.subjectDual-tuned coil-
dc.subjectMultitransceiver coil-
dc.subjectSodium MR imaging-
dc.titleMultichannel transceiver dual-tuned RF coil for proton/sodium MR imaging of knee cartilage at 3 T-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.mri.2011.12.011-
dc.identifier.pmid22297242-
dc.identifier.scopuseid_2-s2.0-84862802779-
dc.identifier.volume30-
dc.identifier.issue4-
dc.identifier.spage562-
dc.identifier.epage571-
dc.identifier.eissn1873-5894-
dc.identifier.isiWOS:000303086700011-

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