Fig. 6: Workflow of PTT-based BP estimation. | npj Digital Medicine

Fig. 6: Workflow of PTT-based BP estimation.

From: Blood pressure measurement using only a smartphone

Fig. 6

PTT stands for pulse transit time, PCG for Phonocardiogram, and BP for blood pressure. First, PTT needs to be defined based on the available signals, where different combinations can be used (a). Then, multiple measurement pairs of PTT and BP need to be obtained (b). With these measurements, the unknown parameters of the calibration curve can be estimated (c).

Back to article page