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US 2020/0268253 A1Published application
Photoacoustic computed tomography (pact) systems and methods
AssigneesCalifornia Institute of Technology, Washington University
InventorsLihong Wang, Peng Hu, Li Lin
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Abstract
Among the various aspects of the present disclosure is the provision of systems and methods of imaging using photoacoustic computed tomography.
Claims31
A photoacoustic computed tomography (PACT) system, comprising:
- at least one pulsed or modulated light source;
- an ultrasonic transducer array comprising unfocused transducer elements, each unfocused transducer element having a field-of-view in a range of 5 degrees to 30 degrees in a direction along an axis;
- and
- a scanning mechanism configured to move and/or scan the ultrasonic transducer array along the axis.
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A photoacoustic computed tomography (PACT) method, the method comprising:
- causing at least one pulsed light source to generate one or more light pulses configured to illuminate a specimen being imaged;
- controlling a scanning mechanism to move and/or scan the ultrasonic transducer array in a direction along an axis, wherein the ultrasonic transducer array includes a plurality of unfocused transducer elements, wherein the ultrasonic transducer array is moved/scanned in the direct along the axis while each of a plurality of unfocused transducer elements detects photoacoustic waves within a field-of-view in a range of 5 degrees to 30 degrees in the direction along the axis;
- and
- reconstructing a plurality of 2D images and/or a 3D volumetric image using photoacoustic signals recorded while the scanning mechanism moves/scans the ultrasonic transducer array in the direction along the axis.
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Dependencies are inferred from the claim text.