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Photoacoustic imaging has recently demonstrated strong viability for tool tip visualization in surgical guidance. The rigidity of conventional transducers requires applied pressure for complete tissue contact when placed on curved organs while flexible arrays are able to conform to different geometries. This work presents photoacoustic images acquired with a rigid laparoscopic transducer and a flexible array transducer on different curved surfaces and provides quantitative comparisons on image quality and transducer characterization. The wider field-of-view and correct target depth in images make the flexible array advantageous for tool tip identification in photoacoustic-guided surgery over the laparoscopic transducer.
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Jiaxin Zhang, Alycen Wiacek, Ziwei Feng, Kai Ding, Muyinatu A. Lediju Bell, "Comparison of flexible array with laparoscopic transducer for photoacoustic-guided surgery," Proc. SPIE 12379, Photons Plus Ultrasound: Imaging and Sensing 2023, 1237910 (9 March 2023); https://doi.org/10.1117/12.2656173