MRI Volume Transmittal NIMH25004427
Summary
AI-generated · Sep 01, 2025Replace an RF volume transmit coil used in 7T MRI studies with a more durable design that reduces transmit-receive coupling with the existing receive arrays. The current coil, manufactured by Resonance Research Inc. (RRI), has experienced repeated mechanical and electrical failures, including broken tuning rods and unstable coupling with large-loop receive coils.
The new coil must offer improved mechanical durability and a redesigned geometry to enhance decoupling, thereby reducing flip-angle inhomogeneity and T1 contrast variation to improve image quality and consistency in functional and structural MRI experiments. It must be compatible with current and future receive coil configurations to maintain high data fidelity and support ongoing NIH-funded neuroscience research.
The Neurophysiology Imaging Facility (NIF) requires a replacement RF volume coil to improve reliability and mitigate RF transmit-receive coupling issues observed with specific receive arrays during 7T MRI studies. The existing coil, manufactured by Resonance Research Inc. (RRI), has exhibited repeated mechanical and electrical failures specifically, broken tuning rods and unstable coupling behavior with large-loop receive coils. This procurement seeks to acquire a new volume transmit coil with improved mechanical durability and a modified design that reduces transmit-receive coupling. Enhanced decoupling will reduce flip angle inhomogeneity and T1 contrast variation, thereby improving image quality and consistency in functional and structural MRI experiments. The upgrade i essential to ensure compatibility with current and future receive coil configurations, maintain high data fidelity, and support ongoing NIH-funded neuroscience research.
From Sources Sought posted on Aug 31, 2025Notice history
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USA