ArticleMagnetic resonance in medicine2019
IMPULSE: A scalable algorithm for design of minimum specific absorption rate parallel transmit RF pulses.
Article in Magnetic resonance in medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Roadmap towards personalized approaches and safety considerations in non-ionizing radiation: from dosimetry to therapeutic and diagnostic applications.Physics in medicine and biology · 2026Review
- Parallel-transmission spatial spectral pulse design with local specific absorption rate control: Demonstration for robust uniform water-selective excitation in the human brain at 7 T.Magnetic resonance in medicine · 2025Article
- Parallel transmission 2D RARE imaging at 7T with transmit field inhomogeneity mitigation and local SAR control.Magnetic resonance imaging · 2022Article
- Personalized local SAR prediction for parallel transmit neuroimaging at 7T from a single T1-weighted dataset.Magnetic resonance in medicine · 2022Article
- SAR and temperature distributions in a database of realistic human models for 7 T cardiac imaging.NMR in biomedicine · 2021Article
- MRSaiFE: An AI-based Approach Towards the Real-Time Prediction of Specific Absorption Rate.IEEE access : practical innovations, open solutions · 2021Article
- Solving the Time- and Frequency-Multiplexed Problem of Constrained Radiofrequency Induced Hyperthermia.Cancers · 2020Article
- Parallel Transmission for Ultrahigh Field MRI.Topics in magnetic resonance imaging : TMRI · 2019Review
- Direct SAR mapping by thermoacoustic imaging: A feasibility study.Magnetic resonance in medicine · 2017Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
purposeManaging local specific absorption rate (SAR) in parallel transmission requires ensuring that the peak SAR over a large number of voxels (> THEORY AND
methodsIMPULSE optimizes parallel transmit pulses for small-tip-angle slice selective excitation to minimize a single cost function incorporating multiple quantities (local SAR, global SAR, and per-channel power) averaged over the entire multislice scan subject to a strict constraint on excitation accuracy. Pulses for an 8-channel 7T head coil were designed with IMPULSE and compared with pulses designed using generic optimization algorithms and VOPs to assess the computation time and SAR performance benefits.
resultsIMPULSE achieves lower SAR and shorter computation time compared with a VOP approach. Compared with the generic sequential quadratic programming algorithm, computation time is reduced by a factor of 5-6 by using IMPULSE. Using as many as 6 million local SAR terms, up to 120 slices can be designed jointly with IMPULSE within 45 s.
conclusionsIMPULSE can handle significantly larger number of SAR matrices and slices than conventional optimization algorithms, enabling the use of uncompressed or partially compressed SAR matrices to design pulses for a multislice scan in a practical time frame.
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