ArticleMedical physics2020
Technical Note: Effect of transducer position and ground plane configuration on image quality in MR-guided focused ultrasound therapies.
Article in Medical physics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- In vivo simultaneous proton resonance frequency shift thermometry and single reference variable flip angle TMagnetic resonance in medicine · 2025Article
- Therapeutic ultrasound transducer technology and monitoring techniques: a review with clinical examples.International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group · 2024Review
- Dark band artifact in transcranial MR-guided focused ultrasound: Mechanism and mitigation with passive crossed wire antennas.Magnetic resonance imaging · 2023Article
- Transcranial MR-Guided Histotripsy System.IEEE transactions on ultrasonics, ferroelectrics, and frequency control · 2021Article
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Authors and funding
5 authors.
Funding
Abstract
purposeTo evaluate the effect of a focused ultrasound transducer position and ground plane configuration on magnetic resonance image quality.
methodsThe effect of transducer position with respect to the MRI B0 field and the radiofrequency receive coils was evaluated in a breast-specific MRgFUS system with an integrated RF phased-array coil. Image signal-to-noise ratio was evaluated at different transducer locations. The effect of ultrasound transducer ground plane configuration was evaluated using a replica transducer with 12 ground plane configurations. All evaluations were performed at 3 Tesla.
resultsBoth transducer position and ground plane configuration were found to have a considerable effect on overall image SNR. A 67% increase in SNR was achieved by positioning the transducer face perpendicular to the B0 field. A 25% increase in SNR was achieved by segmenting the replica transducer ground plane from one continuous plane to nine individual segments.
conclusionsAdvances in focused ultrasound hardware allow for integrated radiofrequency MRI coils as well as adjustable transducer positioning. The placement of the ultrasound transducer with respect to both the magnetic field and RF coils can have a considerable effect on image SNR and the resulting MR images that are used for MR-guided focused ultrasound treatment planning, monitoring and assessment.
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Registered trials
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