System and methods for gating heart signals
First Claim
1. A method of generating heart gating signals, useful in association with a heart imaging device, the method comprising:
- receiving at least two heart sounds including an S1 heart sound and an S2 heart sound;
identifying the S2 heart sound; and
sending an S2 gating signal corresponding to the S2 heart sound to the heart imaging device.
1 Assignment
0 Petitions
Accused Products
Abstract
A heart gating system in which the heart sounds are used to generate the acquisition trigger signals. This is possible because the various heart sound components have characteristics in the temporal domain to allow for distinguishing the S1'"'"'s and S2'"'"'s. Hence, the individual heart sound components can be temporally distinguished and gating signals can be generated based on the identified heart sounds such as the S2 heart sound. In addition, S1 also has a frequency spectrum different from that of S2. Hence, in another embodiment of the invention, the frequency characteristics of the heart sounds can be used to distinguish S1 from S2. The combined temporal and frequency characteristics of the heart sounds can also be used to distinguish S1 from S2. In addition, detecting carotid pulses and/or changes in thoracic cavity can also used to better distinguish between S1 and S2.
-
Citations
22 Claims
-
1. A method of generating heart gating signals, useful in association with a heart imaging device, the method comprising:
-
receiving at least two heart sounds including an S1 heart sound and an S2 heart sound;
identifying the S2 heart sound; and
sending an S2 gating signal corresponding to the S2 heart sound to the heart imaging device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A heart gating system, useful in association with a heart imaging device, the system comprising:
-
an acoustic sensor configured to receive at least two heart sounds including an S1 heart sound and an S2 heart sound;
a heart sound detector configured to identify the S2 heart sound; and
a gating signal generator configured to send an S2 gating signal corresponding to the S2 heart sound to the heart imaging device. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification