The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2020
Filed:
Aug. 31, 2017
Shanghai United Imaging Healthcare Co., Ltd., Shanghai, CN;
Gongji Zhang, Shanghai, CN;
Renkuan Zhai, Shanghai, CN;
Weiguo Zhang, Houston, TX (US);
Lingzhi Hu, Shanghai, CN;
Chaohong Wang, Shanghai, CN;
SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai, CN;
Abstract
A system and method for modifying RF pulse generated by an MRI system are provided. The method may include: obtaining an excitation variable-rate selective excitation (VERSE) factor and a refocusing VERSE factor; determining a first slice-selection gradient waveform based on an excitation factor and a reference excitation slice-selection gradient waveform; determining a second slice-selection gradient waveform based on a refocusing factor and a reference refocusing slice-selection gradient waveformslice-selection gradient waveformslice-selection gradient waveform; determining an excitation pulse based on the first slice-selection gradient waveform; determining a refocusing pulse based on the second slice-selection gradient waveform, wherein a ratio of the decimal part of the excitation factor to the decimal part of the refocusing factor is equal to a ratio of the amplitude of the first reference waveform to the amplitude of the reference refocusing slice-selection gradient waveform.