Dear Professor Zhang,
I have not written to you for a long time, how are you and your family?
I am currently planning on going back home (Luoyang) on vacation in December. Is our institute interested in brain function studies, breast imaging using near infrared sepectroscopy and diffuse optical tomography, and technologies like OpticHolter for long term ambulatory monitoring of brain hemodynamics? I would be more than happy to give a presentation.
Hope all is well,
Best,
Quan
(发表日期：2005-10-19)