3D-PACT synchronized with ECG for cardiac imaging. (IMAGE)
Caption
a, Representative sketch of the 3D-PACT platform with a close-up view of the imaging aperture. b, Experimental setup for the rat heart imaging. The rat was mounted in a prone position, and the expanded light beam was directed towards the rat’s chest from the bottom. c, Example of the signal synchronization between the 3D-PACT (top) and ECG (bottom) measurements. The 3D-PACT signal was collected from one transducer element on one array at multiple scanning positions (i.e., on the same latitude). In the photoacoustic signal diagram, the horizontal axis represents the scanning steps (i.e., time), and the vertical axis stands for the time-of-flight signal (data acquisition sampling at 20 MHz). The P, R, and T waves in the ECG signals correspond to atrial contraction, ventricular contraction, and ventricular relaxation, respectively.
Credit
by Li Lin, Xin Tong, Susana Cavallero, Yide Zhang, Shuai Na, Rui Cao, Tzung K. Hsiai, and Lihong V. Wang
Usage Restrictions
Credit must be given to the creator.
License
CC BY