A dynamic optical imaging phantom based on an array of semiconductor diodes.
An electrically-activated phantom for evaluating diffuse optical imaging systems has been designed based on an array of semiconductor diodes which are used to heat a thermochromic dye embedded in a solidified polyester resin with tissue-like optical properties. The array allows individual diodes to be addressed sequentially, thus simulating the movement of a small volume of contrasting optical absorption. Two designs of diode-array phantom are described and results of imaging experiments are presented.
Department of Medical Physics & Bioengineering, University College London, Gower Street, London WC1E 6BT, UK.
Jeremy C
JC
Hebden
Teresa
T
Correia
Imran
I
Khakoo
Adam P
AP
Gibson
N L
NL
Everdell
D000042:Absorption; D004566:Electrodes; D055620:Optical Phenomena; D019047:Phantoms, Imaging; D012666:Semiconductors / Q000295:instrumentation; D013696:Temperature