| 摘要 |
<p>A system and method for synchronized persistence with ultrasonic harmonic imaging of both tissue and tissue perfused with a contrast agent are disclosed. The ultrasonic harmonic imaging system comprises a frame memory, a frame processor, a persistence actuator, and a persistence controller. In a preferred embodiment, the persistence actuator disables persistence filtering in response to contrast agent destructive ultrasonic transmissions. A method for observing an ultrasonic response of a contrast agent may be performed by: introducing a contrast agent into tissue targeted for imaging; insonifying the tissue with a first ultrasound transmit signal suited to observe the contrast agent and the tissue; modifying a transmit signal parameter to destroy a substantial portion of the contrast agent; disabling persistence filtering while the modified transmit signal is actuated; and enabling persistence filtering while observing the re-perfusion of the tissue.</p> |
