Figure 1
From: Dual echo gradient echo imaging for simultaneous thermal mapping in cortical bone and soft tissue
(A) Schematic of HIFU heating experiment. (B) The left axis shows the magnitude signal change observed in the ROIs shown in C during heating. The ROIs are centered on the sensor positions. The right axis shows the average temperature of sensors 1 and 2. (C) Correlation coefficient map of the average temperature of sensors 1 and 2 with signal change derived from TE1 magnitude images. The correlation is positive in the heated area within the bone, negative in the gel outside the bone, and negligible for areas of the bone distant from the treated region. (D) PRF temperature change in the gel surrounding the bone, derived from the TE2 phase images.