Abstract
Diffuse optical tomography (DOT) is a new tomographic technique, which is non-invasive and does not involve radiation exposure. In this paper, a self-developed near infrared (NIR) diffuse optical tomography instrument is described, and phantoms composed of Intra-lipids are discussed. The NIR optical characteristics of the homogenous Intra-lipid phantoms are measured to construct a set of databases at various concentrations, and further analysis using fitting curves is presented as well. Additionally, a pseudo-model technique for imitating biological tissues is proposed and implemented. This pseudo-model can be used to represent the same optical characteristics as real tissues, meaning that it is a viable alternative to cope with measuring limitations. Experiments reveal good results when the pseudo-model employs 1% Intra-lipid as a background tissue that imitates pork and 3% Intra-lipid as an inclusion to mimic a bone. Due to the limitations of hardware nowadays, obviously, this pseudo-model will offer a great aid for the development and evaluation of a DOT system.
Original language | English |
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Pages (from-to) | 189-201 |
Number of pages | 13 |
Journal | Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an |
Volume | 30 |
Issue number | 2 |
DOIs | |
State | Published - 2007 |
Keywords
- Intra-lipid
- Near infrared
- Pseudo-model
- Tomography