Bryan Clingman,Jason Zalev,Remie J. Smith,Gregory Schmid
申请号：
US13725120
公开号：
US09445785B2
申请日:
2012.12.21
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A system and method are provided for normalizing range in an optoacoustic imaging system. In an embodiment, the system includes adjustable amplifiers and a probe having an array of transducer elements, each of the adjustable amplifiers being associated with one or more of the transducer elements. The transducer elements are acoustically coupled with a surface of a volume. The gain on the adjustable amplifiers is changed as a function of the passage of time during a predetermined period of time after a pulse of light. A sinogram is recorded by sampling the adjustably amplified plurality of transducer elements for the predetermined period of time. The sinogram is processed by substantially reversing the changing step mathematically, and storing the results in an expanded dynamic range sinogram. The expanded dynamic range sinogram provides sufficient numeric precision to permit the reversal of the changing step without materially decreasing the dynamic range of the information in the sinogram. An optoacoustic image is generated based upon the information contained in the expanded dynamic range sinogram.
