Enhanced contrast acoustic-resolution photoacoustic microscopy using double-stage delay-multiply-and-sum beamformer for vasculature imaging

• Main Authors: Mozaffarzadeh, Moein, Varnosfaderani, Mehdi Haji Heidari, Sharma, Arunima, Pramanik, Manojit, de Jong, Nico, Verweij, Martin D.
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Published: 2019
• Subjects: Engineering::Chemical engineering::Biochemical engineering; Acoustic-resolution Photoacoustic Microscopy; Contrast Enhancement
• Online Access: https://hdl.handle.net/10356/81401; http://hdl.handle.net/10220/50390
• Institution: Nanyang Technological University

In acoustic‐resolution photoacoustic microscopy (AR‐PAM) systems, the lateral resolution in the focal zone of the ultrasound (US) transducer is determined by the numerical aperture (NA) of the transducer. To have a high lateral resolution, a large NA is used. However, the larger the NA, the smaller...