Tomographic imaging with an ultrasound and LED-based photoacoustic system
Kalloor Joseph Francis, Yoeri E. Boink, Maura Dantuma, Mithun Kuniyil Ajith Singh, Srirang Manohar, Wiendelt Steenbergen
Abstract
Pulsed lasers in photoacoustic tomography systems are expensive, which limit their use to a few clinics and small animal labs. We present a method to realize tomographic ultrasound and photoacoustic imaging using a commercial LED-based photoacoustic and ultrasound system. We present two illumination configurations using LED array units and an optimal number of angular views for tomographic reconstruction. The proposed method can be a cost-effective solution for applications demanding tomographic imaging and can be easily integrated into conventional linear array-based ultrasound systems. We present a potential application for finger joint imaging in vivo , which can be used for point-of-care rheumatoid arthritis diagnosis and monitoring.