Dual-View and Multi-Content Head-Up Display Using a Single Picture Generation Unit and Two-Layer Volume Holographic Grating

Considering that the driver and passengers need different display content in the vehicle display, we propose a dual-view and multi-content head-up display (HUD).Based on the angle selectivity of volume holographic grating (VHG), the multiplexed VHGs diffract light beams at different angles to achieve dual-view display.Based on the wavelength chains

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An unusual case of late aortic bioprosthetic valve dehiscence

Prosthetic valve dehiscence is one of the most catastrophic complications of prosthetic valves.Clinical presentation may range from mild asymptomatic regurgitation to severe paravalvular leaks causing acute heart failure, cardiogenic shock or even sudden death.Echocardiography and fluoroscopy here help in early diagnosis.We report here an occurrenc

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