The sensitivity and specificity of the optical modality can be enhanced by the use of highly absorbing compounds as contrast agents. Novel macrocyclic cyanine and indocyanine bioconjugates that absorb and emit light in the near infrared region of electromagnetic spectrum are disclosed. These compounds are especially useful for endoscopic, localized photoacoustic, and sonofluorescence imaging, detection and therapy of tumors and other abnormalities.
                            光学模式的灵敏度和特异性可以通过使用高度吸收的化合物作为对比剂来增强。本文介绍了一种新型的大环
氰染料和
吲哚氰染料生物共轭物,它们在电磁光谱的近红外区域吸收和发射光线。这些化合物特别适用于内窥镜、局部光声和声
荧光成像、肿瘤和其他异常的检测和治疗。