US 12,032,045 B2
Systems and methods for pulse sequence configuration in magnetic resonance imaging
Xiaomao Gong, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on Aug. 8, 2022, as Appl. No. 17/818,342.
Application 17/818,342 is a continuation of application No. 16/868,554, filed on May 7, 2020, granted, now 11,408,952.
Claims priority of application No. 201910609240.4 (CN), filed on Jul. 8, 2019.
Prior Publication US 2022/0381855 A1, Dec. 1, 2022
Int. Cl. G01V 3/00 (2006.01); G01R 33/28 (2006.01); G01R 33/38 (2006.01); G01R 33/54 (2006.01); A61B 5/00 (2006.01); A61B 5/055 (2006.01)
CPC G01R 33/288 (2013.01) [G01R 33/38 (2013.01); G01R 33/543 (2013.01); A61B 5/0035 (2013.01); A61B 5/055 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
at least one storage device including a set of instructions; and
at least one processor configured to communicate with the at least one storage device, wherein the set of instructions, when executed by the processor, cause the at least one processor to perform operations including:
obtaining, by the at least one processor, a preliminary gradient pulse configuration, wherein the preliminary gradient pulse configuration relates to a portion of a pulse sequence to be implemented by one or more coils of an MR scanner;
determining, by the at least one processor, a global peripheral nerve stimulation (PNS) value of the preliminary gradient pulse configuration;
determining, by the at least one processor, whether the global PNS value exceeds a PNS threshold;
in response to determining that the global PNS value exceeds the PNS threshold, determining, by the at least one processor, a target gradient pulse configuration by updating the preliminary gradient pulse configuration based on a configuration updating strategy, wherein the determining the target gradient pulse configuration by updating the preliminary gradient pulse configuration based on the configuration updating strategy includes:
determining, by the at least one processor, whether at least one of gradient pulses in the preliminary gradient pulse configuration has a neighboring gradient pulse;
in response to determining that at least one of the gradient pulses in the preliminary gradient pulse configuration has a neighboring gradient pulse, determining, by the at least one processor, a target neighboring slope of the neighboring gradient pulse based on candidate slopes of the neighboring gradient pulse and the preliminary gradient pulse configuration;
updating, by the at least one processor, the configuration updating strategy based on the target neighboring slope of the neighboring gradient pulse; and
determining, by the at least one processor, the target gradient pulse configuration based on the updated configuration updating strategy and the preliminary gradient pulse configuration; and
directing, by the at least one processor, the MR scanner to perform a scan based on the target gradient pulse configuration.