Mini-FDPM Project
I have been working on the Mini-FDPM project for my Ph.D. research.  FDPM, for Frequency Domain Photon Migration spectroscopy, is a technique for content detection. By broadband (10MHz-1GHz) modulation of near-infrared laser light (600-1000nm) and measuring the phase and amplitude of the backscattered light, it is possible to accurately derive the scattering and absorption coefficient of bulk tissue and other materials. This has application to breast cancer detection, internal body temperature measurement, blood flow, and many others.
The goal is to miniaturize the current Laser Breast Scanner (LBS) from a refrigerator-sized instrument down to a handheld device. I have built a homodyne version in 2003--2004 and improved it with a heterodyne version in 2005--2006. I am doing a new version that will further reduce the noise in certain frequency bands while accelerating the detection speed.
Keun-Sik No
Name: Keun-Sik No
Position: PhD Candidate
Department: EECS
Major: Electrical Engineering
Project: Mini-FDPM
Phone: (949) 824-1421
Fax: (949) 824-3203
Address: 437a Engineering Tower, Irvine, CA 92697-2625 USA
Advisor: Pai H. Chou
My Research Project
Latest version of Heterodyne Mini-FDPM
Heterodyne Mini-FDPM
Homodyne Mini-FDPM
Keun-Sik No and Pai H. Chou,
    ``Mini-FDPM and Heterodyne Mini-FDPM: Handheld Non-Invasive Breast Cancer Detectors based on Frequency Domain Photon Migration,'' in IEEE Transactions on Circuits and Systems, Vol. 52, No. 12, December 2005. pp. 2672--2685.
Keun Sik No, Pai H. Chou,
    "Mini-FDPM: a Handheld Non-Invasive Breast Cancer Detector Based on Frequency Domain Photon Migration," in Proc. IEEE BioCAS, Singapore, December 1--3, 2004. pp. 2.2-5 -- 2.2-8.