| 摘要 |
A medical image acquiring device (100) repeatedly photoacoustically images an intracorporeal spatial location (132) that is common image to image, varying at least one of ultrasound transducer acquisition location, and light excitation, image to image so that averaging of the images serves to decorrelate background clutter that exists in the images, of the spatial location, individually. The varying of one may be in the absence of the other, and may entail movement. The movement may be of an optical fiber bundle, a light guide or free space optics, as by rotation (140), translation or vibration. It may be of an optical mask or engineered diffuser, or it may entail toggling between active states of two spaced apart, separate optical fiber branches near the probe surface. If the movement pertains instead to acquisition location, it may imply translation of the active receive aperture (127), or rotation of the transducer as in the imaging plane in which case co-registering of the images may use synchronous B-mode images to detect skin orientation and a landmark. |
