Patent · US Active

Method for designing RF excitation pulses in magnetic resonance tomography

US7336145B1 · kind B1 · utility

11Cited by

3References

18Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Adam C. Zelinski · Jersey City, US
Elfar Adalsteinsson · Belmont, US
Kawin Setsompop · Boston, US
Lawrence L. Waid · Cambridge, US
Joerg Ulrich Fontius · Fairview Avenue, DE

Key dates

Filing date	Nov 15, 2006
Grant date	Feb 26, 2008
Priority date	—
Expiry date	Nov 15, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/3415
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Waveforms for radio-frequency (RF) excitations pulses used in magnetic resonance imaging are designed according to a Least Squares QR (LSQR) algorithm or a Conjugate Gradient Least Squares (CGLS) algorithm, to solve the linear system of equations that arises in a multi-channel RF transmit arrangement. Better management of SAR and other factors is achieved with RF pulses designed according to these algorithms, compared to the conventionally employed singular value decomposition (SVD) algorithm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.