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It is important of diagnosing not only primary tumors but also metastases accurately. Recently, we have established murine lymph node metastasis model and developed a new method to reconstruct the two- and three-dimensional (2D/3D) vessel structures in the model by using nanobubbles (NBs) and high-frequency ultrasound imaging system. In the present study, we investigated the characteristics of 2D/3D...
Preclinical mouse models are essential to the study of liver metastasis, yet their utility has been limited by difficulty in tracking the progression of metastases through time. In this study, liver metastases were identified by in vivo bioluminescence system and a high-frequency ultrasound system with nanobubbles. Tumor grows and vessel densities were calculated. Liver metastases were observed on...
In this paper we propose a high-S/N imaging method involving combining many images captured with small blur using a video camera capable of high-frame-rate image capturing at 1000 frames/s. Use of a high-frame-rate camera makes the image change between frames small, enabling easy motion estimation, and makes it possible to use more light information, even when the exposure time is reduced to avoid...
This study aims imaging and permittivity measurement for microscopic structure at 60 GHz band. Main device is the waveguide type probe which has a 0.5 mm aperture on the terminal wall. Using this probe, a cherry leaf is measured as a demonstration of thin film measurement. Permittivity is obtained on vein and mesophyll. Image is obtained for 5times2.5 mm region with 0.25 mm step.
To verify the defect on the material may be required for industrial application, such as void and pore detections. In our research, the scanning near-field millimeter-wave microscopy is used to detect the void and pore. In experiment, the voids are formed inside the Teflon sample with various in-depths from 0.5 mm to 10 mm. Each void is 1 mm-dia and 20 mm-length. The air void and water-filled void...
We demonstrate three-dimensional imaging by wide field optical coherence tomography with high-speed CMOS camera. A sample volume of 2.3times2.3times1.1mm3 (corresponding to 256times256times300 pixels) was imaged at 10 volumes/s by the scanning reference mirror.
We demonstrated in vivo cross-sectional imaging of human fingers by non-mechanical scanning optical coherence tomography, using a diffracted light as the reference beam and a linear illumination beam, at a center wavelength of 1.3 mum.
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