发明名称 IMPLEMENTATION OF A MAGNETIC RESONANCE EXAMINATION AT SEVERAL BED POSITIONS IN THE SCANNER
摘要 In a method and magnetic resonance (MR) apparatus for implementing an MR examination of an examination subject with a predetermined MR measurement protocol at several different bed positions of the bed of the MR apparatus, a respective anatomical structure of the examination subject is determined for each of the several bed positions and a respective specific absorption rate is determined for each of the several bed positions as a function of the respective anatomical structure of the examination subject at the corresponding bed position and the predetermined MR measurement protocol. The specific absorption rates for the several bed positions are determined before electromagnetic fields are generated according to the respective predetermined MR measurement protocol. The specific absorption rates are compared with an absorption rate threshold value and a notification is output if at least one of the specific absorption rates exceeds the absorption rate threshold value.
申请公布号 US2015301137(A1) 申请公布日期 2015.10.22
申请号 US201514689308 申请日期 2015.04.17
申请人 Siemens Aktiengesellschaft 发明人 Keil Miriam
分类号 G01R33/483;G01R33/56;G01R33/563;G01R33/30 主分类号 G01R33/483
代理机构 代理人
主权项 1. A method for implementing a magnetic resonance (MR) examination, comprising: prior to operating an MR scanner, comprising an imaging volume and a patient bed, to acquire MR data from a subject, according to a predetermined MR data acquisition protocol, as the patient bed, with a patient thereon, is moved through a succession of bed positions that respectively cause different anatomy of the patient to be successively situated in said imaging volume, determining, in a computer, the respective anatomy of the patient that is present in the imaging volume for each of the bed positions; in said computer, determining a specific absorption rate for each of said bed positions dependent on the respective anatomy of the patient that is present in the imaging volume at the respective bed position and the predetermined magnetic resonance protocol, said specific absorption rate defining an absorption of electromagnetic energy in biological tissue of the patient, resulting from the predetermined MR data acquisition protocol at the respective bed position; in said computer, comparing the determined specific absorption rates for each bed position with an absorption rate threshold value; and at a graphical interface in communication with said computer, emitting a notification when at least one of said specific absorption rates exceeds said absorption rate threshold value.
地址 Muenchen DE