INDOCYANINE GREEN-CONTAINING PARTICLES, PHOTOACOUSTIC-IMAGING CONTRAST AGENT INCLUDING THE SAME, AND METHOD FOR PRODUCING THE INDOCYANINE GREEN-CONTAINING PARTICLES
Indocyanine green-containing particles each include a metal oxide particle or a metal particle and an aggregate of indocyanine green. The aggregate of indocyanine green has a relative maximum absorbance at 880 nm or more and 910 nm or less.