Ultrasound imaging is now in very widespread clinical use. The most important underpinning technologies include transducers, beam forming, pulse compression, tissue harmonic imaging, contrast agents, techniques for measuring blood flow and tissue motion, and three-dimensional imaging. Specialized and emerging technologies include tissue characterization and image segmentation, microscanning and...

BACKGROUND AND PURPOSE To clarify optimal brain tissue perfusion images visualized by transcranial ultrasound harmonic imaging, we compared gray-scale integrated backscatter (IBS) images of new ultraharmonic imaging (UHI) and conventional second harmonic imaging (SHI) with power harmonic imaging (PHI) (harmonic B-mode with harmonic power Doppler images) in 10 patients with and 4 without a tempo...

Nonlinear optical microscopy techniques have unique advantages in tissue imaging, such as enhanced contrast, high resolution, label-free deep sectioning capabilities and so on. also has multiple imaging modalities, corresponding to various components biological tissues. Unfortunately, its wide applications are hindered due the lack of broadly tunable femtosecond sources designed for driving mul...