MAGNETIC RESONANCE METHOD AND APPARATUS USING THE SAME MR SIGNALS FOR DETERMINING VARIOUS PARAMETERS

摘要

In a method and magnetic resonance (MR) apparatus for determining a first parameter and a second parameter in a volume of an examination object, MR signals of the volume are acquired using various values of at least one acquisition parameter. A first function is specified by which an MR signal can be determined depending on the first parameter and the at least one acquisition parameter, and a second function is specified by which an MR signal can be determined depending on the second parameter and the at least one acquisition parameter. A first subset of the MR signals is determined for the first parameter and a second subset of the MR signals is determined for the second parameter, wherein the first subset differs from the second subset. The first parameter is determined such that MR signals calculated using the first function correspond as closely as possible to the MR signals of the first subset, and the second parameter is determined such that MR signals calculated using the second function correspond as closely as possible to the MR signals of the second subset.

主权项

1. A method for determining a first parameter and a second parameter in a volume of an examination subject by operation of a magnetic resonance (MR) apparatus, said method comprising:
operating an MR scanner, while an examination subject is situated therein, to acquire MR signals from a volume of the examination subject using multiple values of an acquisition parameter; in a computer, specifying a first function by which an MR signal can be determined dependent on said first parameter and said acquisition parameter; also specifying a second function in said computer by which an MR signal can be determined dependent on the second parameter and said acquisition parameter; providing said MR signals to said computer and, in said computer, determining a first subset of the MR signals for the first parameter and determining a second subset of the MR signals for the second parameter, said first subset differing from said second subset; in said computer, executing a calculation algorithm that determines said first parameter so as to cause MR signals calculated using the first function to correspond as closely as possible to said MR signals of the first subset and that determines said second parameter to cause MR signals calculated using said second function to correspond as closely as possible to the MR signals of the second subset; and making the first parameter and the second parameter available in electronic form from the computer.