Previously, a weak magnetic field such as a human body magnetic field was used with a superconducting quantum interferometer (SQUID). However, such sensors require liquid helium cooling and a large volume of equipment, so only some research institutions have it. This time, TDK has improved the sensitivity of the sensor in its field of magnetic sensors (magnetoresistive components). Using the array of sensors, the magnetic field distribution was successfully measured at room temperature. It is also easy to measure side by side with multiple sensors, enabling high density measurements. Therefore, it can be used to determine the starting site of myocardial activity, and to evaluate the expansion of the active site. TDK will announce the details of this technology at the "31st Japan Society for Biomagnetics (Juneze City Cultural Hall, June 9-10, 2016). (Reporter: Da Xia Yi, "Nikkei Digital Health") Medical Patch And Gel,Pain Patch,Pain Relief Patch,Icy Hot Back Patch Shandong Zhushi Pharmaceutical Group Co.,LTD , https://www.sdzs-medical.com