Dual-mode imaging system and method for achieving XCT and photoacoustic tomography

Abstract

The invention discloses a dual-mode imaging system and method for achieving XCT and photoacoustic tomography. The mode of photoacoustic and XCT dual-mode same-machine fused imaging is adopted, photoacoustic tomography tissue optical absorption comparison and XCT density comparison are combined, the interpretation accuracy of a photoacoustic tomography structure is further improved, and information complementary dual-mode imaging is achieved. A traditional vertical hanging rotation mode is changed, a rotary table is arranged at the bottom of a water trough, sealing between the rotary table and the bottom of the water trough is achieved through a waterproof bearing, the water trough is fixed, a sample is immersed in water, the rotary table rotates to drive the sample to rotate, accordingly 360-degree sample scanning is completed, and it is ensured that the water trough is water-tight and a photoacoustic signal of the sample is conducted in an undamped mode.

Description

technical field [0001] The invention relates to animal or other sample imaging technology, in particular to a dual-mode imaging system and an imaging method for realizing XCT and photoacoustic imaging. Background technique [0002] Photoacoustic imaging (PAT) is a tomographic imaging technique based on the photoacoustic effect. This imaging technology combines the high contrast of optical imaging and the high-resolution characteristics of ultrasound imaging, and can obtain high-resolution images in deeper tissues. It has shown great potential in the functional and molecular imaging of deep animal tissues. [0003] However, the interpretation of soft tissue imaging or molecular imaging by photoacoustic imaging becomes relatively difficult due to the lack of sufficient structural information. This is mainly because many tissues and organs have unclear boundaries in photoacoustic imaging, making it difficult to determine the anatomical location of the image results. Especiall...

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Problems solved by technology

[0004] In order to solve the problem of difficult interpretation due to lack of sufficient structural information in photoacoustic imaging, the present invention proposes a dual-mode imaging system of X-ray computed tomography (XCT) and photoacoustic imaging and its imaging method. Combined with XCT on the same machine, it becomes a new dual-mode imaging system with complementary information

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