TEMPERATURE DETERMINATION USING FIELD B1 MAP

摘要

1. A medical device (600, 700, 800, 900, 1000), comprising: a magnetic resonance imaging system (602) comprising a magnet (604) with a visualization zone (608) for receiving magnetic resonance data (642, 748) from patient (618) from the visualization zone; - memory (632) for storing machine-executable instructions (660, 662, 664, 760, 762, 764); - processor (626) for controlling the medical device, and the execution of commands prompts the processor to: - receive (100, 200, 300, 400, 506) data (642) of the magnetic resonance of the field map B1 using a magnetic resonance imaging system, and the total resonance of the map of field B1 contains data or information that can be used to compile a map of field B1; and - calculate the conductivity map and / or the permittivity map using the magnetic resonance data of the field map B1; and - determine (102, 206, 306, 408, 512) a temperature map (646), at least in part, using a conductivity map and / or permittivity map. 2. The medical device according to claim 1, wherein the execution of the instructions further causes the processor to: - determine (202) a map (644) of the phase of field B1 using the magnetic resonance data of the map of field B1; and - calculate (204) a conduction map (744) from the phase map of field B1, the temperature map being determined, at least in part, using the conduction map. 3. The medical device according to claim 1 or 2, wherein the execution of the instructions further causes the processor to: - determine (302) a map (742) of the amplitude of field B1 using the magnetic resonance data of the map of field B1; and - calculate (304) the permittivity map (746) from the field amplitude map B1, the temperature map being determined at least in part by means of the permittivity map. 4. The medical device according to claim 1, in which the execution of commands is supplemented