Enhancement of photoacoustic image quality by sound speed correction: ex vivo evaluation Yoon, Changhan ; Kang, Jeeun ; Han, Seunghee ; Yoo, Yangmo ; Song, Tai-Kyong ; Chang, Jin Ho Abstract Publication: Optics Express Pub Date: January 2012 DOI: 10.1364/OE.20.003082 Bibcode: 2012OExpr..20.3082Y