ArticleMagnetic resonance in medicine2016
Evaluation of a three-dimensional MR acoustic radiation force imaging pulse sequence using a novel unbalanced bipolar motion encoding gradient.
Article in Magnetic resonance in medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- MR-ARFI to evaluate intensity variability and enhance targeting of FUS: A brain study in rats.Magnetic resonance in medicine · 2026Article
- Mimicking focused ultrasound with a loop coil in acoustic radiation force imaging.Magnetic resonance in medicine · 2025Article
- Magnetic Resonance Acoustic Radiation Force Imaging (MR-ARFI).Journal of magnetic resonance imaging : JMRI · 2025Review
- Magnetic Resonance Thermometry Targeting for Magnetic Resonance-Guided Histotripsy Treatments.Ultrasound in medicine & biology · 2023Article
- Reduced-field of view three-dimensional MR acoustic radiation force imaging with a low-rank reconstruction for targeting transcranial focused ultrasound.Magnetic resonance in medicine · 2022Article
- Considerations for ultrasound exposure during transcranial MR acoustic radiation force imaging.Scientific reports · 2019Article
- Multiple-point magnetic resonance acoustic radiation force imaging.Magnetic resonance in medicine · 2019Article
- Simultaneous MR thermometry and acoustic radiation force imaging using interleaved acquisition.Magnetic resonance in medicine · 2018Article
- High sensitivity MR acoustic radiation force imaging using transition band balanced steady-state free precession.Magnetic resonance in medicine · 2018Article
- Focal point determination in magnetic resonance-guided focused ultrasound using tracking coils.Magnetic resonance in medicine · 2017Article
- Sensitivity of tissue properties derived from MRgFUS temperature data to input errors and data inclusion criteria: ex vivo study in porcine muscle.Physics in medicine and biology · 2016Article
- MR thermometry for focused ultrasound monitoring utilizing model predictive filtering and ultrasound beam modeling.Journal of therapeutic ultrasound · 2016Article
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5 authors.
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Abstract
purposeMR guided focused ultrasound procedures require accurate focal spot localization in three dimensions. This study presents a three-dimensional (3D) pulse sequence for acoustic radiation force imaging (ARFI) that efficiently localizes the focal spot by means of ultrasound induced tissue displacement over a large field-of-view.
methodsA novel unbalanced bipolar motion encoding gradient was implemented to maximize time available for motion encoding, reduce echo times, and allow for longer echo train lengths. Two advanced features, kz reduction factor (KZRF) and kz -level interleaving, were implemented to reduce tissue heating. Studies in gelatin phantoms compared the location of peak displacement and temperature measured by 3D MR thermometry. MR-ARFI induced tissue heating was evaluated through a parametric study of sequence parameters and MR thermometry measurements during repeated application of ARFI sonication patterns. Sequence performance was characterized in the presence of respiration and tissue inhomogeneity.
resultsThe location of peak displacement and temperature rise agreed within 0.2 ± 0.1 mm and 0.5 ± 0.3 mm in the transverse and longitudinal direction, respectively. The 3D displacement maps were acquired safely, and the KZRF and kz -level interleaving features reduced tissue heating by 51%. High quality displacement maps were obtained despite respiration and tissue inhomogeneities.
conclusionThis sequence provides a safe, accurate, and simple approach to localizing the focal spot in three dimensions with a single scan. Magn Reson Med 76:803-813, 2016. © 2015 Wiley Periodicals, Inc.
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