Abstract:
:A solid dynamic phantom with tissue-like optical properties is presented, which contains seven discrete targets impregnated with thermochromic pigment located at different depths from the surface. Changes in absorption are obtained in response to localized heating of the targets, simulating haemodynamic changes occurring in the brain and other tissues. The depth sensitivity of a continuous wave optical topography system was assessed successfully using the phantom. Images of the targets have been reconstructed using a spatially variant regularization, and the determined spatial localization in the depth direction is shown to be accurate within an uncertainty of about 3 mm down to a depth of about 30 mm.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Correia T,Banga A,Everdell NL,Gibson AP,Hebden JCdoi
10.1088/0031-9155/54/20/016subject
Has Abstractpub_date
2009-10-21 00:00:00pages
6277-86issue
20eissn
0031-9155issn
1361-6560pii
S0031-9155(09)22154-3journal_volume
54pub_type
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