Application of high-density 2D receiver coil arrays for improved SNR in prostate MRI.
AIR coils
MRI receiver coils
prostate cancer
thin‐slice MRI
Journal
Magnetic resonance in medicine
ISSN: 1522-2594
Titre abrégé: Magn Reson Med
Pays: United States
ID NLM: 8505245
Informations de publication
Date de publication:
25 Sep 2024
25 Sep 2024
Historique:
revised:
15
07
2024
received:
20
03
2024
accepted:
22
08
2024
medline:
26
9
2024
pubmed:
26
9
2024
entrez:
25
9
2024
Statut:
aheadofprint
Résumé
To study if adaptive image receive (AIR) receiver coil elements can be configured into a 2D array with high (>45% by diameter) element-to-element overlap, allowing improved SNR at depth (0.7-1.5× element diameter) versus conventional (20%) overlap. An anterior array composed of twenty 10-cm diameter elements with 45% overlap arranged into a 4 × 5 grid and a similar 3 × 7 twenty-one-element posterior array were constructed. SNR and g-factor were measured in a pelvic phantom using the new high-density (HD) arrays (41 total elements) and compared to vendor AIR-based arrays (30 total elements) with conventional overlap. T SNR within the phantom was on average 15% higher for R = 1.0, 1.5, and 2.0 using the HD arrays. Across the 20 subjects SNR within the prostate was 11% higher and assessed radiologically as significantly higher (p < 0.001) for the HD versus conventional arrays. At all acceleration factors the new HD arrays outperformed the conventional arrays (p ≤ 0.01), allowing increased R for similar SNR. AIR elements can be configured into 2D arrays with high (45%) element-to-element overlap, consistently providing increased SNR at depth versus arrays with conventional (20%) overlap. The SNR improvement allows increased acceleration in T2SE prostate MRI.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : NIBIB NIH HHS
ID : R01 EB031790
Pays : United States
Organisme : NCRR NIH HHS
ID : C06 RR018898
Pays : United States
Informations de copyright
© 2024 International Society for Magnetic Resonance in Medicine.
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