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- W3203248475 abstract "Photoacoustic (PA) imaging is a novel noninvasive technique that offers high-contrast tomographic imaging with ultrasound-like resolution at depths of centimeters, enabling visualization of deep small vessels. The aim of this pilot study was to survey the characteristics of deep vessel networks in the mucosa of neoplastic gastrointestinal (GI) lesions using PA imaging.Specimens of patients who had undergone surgical and endoscopic resection for GI lesions were included in this study. The PA/ultrasound imaging system for clinical research is characterized by a technology that can superimpose a PA image over an ultrasound image. Three-dimensional PA images were acquired for the resected specimen before fixation. The stomach and colon of live pigs were incised, and the walls were scanned from the mucosa.A total of 32 specimens (nine esophageal, 12 gastric, 11 colorectal) were scanned. The pathological diagnoses were adenomas (n = 2), intramucosal cancers (n = 14), and invasive cancers (n = 16). The deep vessel networks of all lesions could be visualized. In the intramucosal lesions, the deep vessel network was similar to that of a normal tissue. In invasive cancers, the thick and prominent vessel network was visible in the surface layer of esophageal cancers, infiltrated area of gastric cancers, and surface layer and infiltrated area of colorectal cancers. In the images of living pigs, visualizing the vascular network deeper than the submucosa in both the stomach and large intestine was possible.Our study confirmed that the deep vessel networks of neoplastic GI lesions were visible by PA imaging." @default.
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- W3203248475 date "2021-08-16" @default.
- W3203248475 modified "2023-10-16" @default.
- W3203248475 title "Photoacoustic imaging of fresh human surgically and endoscopically resected gastrointestinal specimens" @default.
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- W3203248475 doi "https://doi.org/10.1002/deo2.28" @default.
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