Dynamic physiological modeling for functional diffuse optical tomography
نویسندگان
چکیده
منابع مشابه
Dynamic physiological modeling for functional diffuse optical tomography.
Diffuse optical tomography (DOT) is a noninvasive imaging technology that is sensitive to local concentration changes in oxy- and deoxyhemoglobin. When applied to functional neuroimaging, DOT measures hemodynamics in the scalp and brain that reflect competing metabolic demands and cardiovascular dynamics. The diffuse nature of near-infrared photon migration in tissue and the multitude of physio...
متن کاملAn Efficient Method for Model Reduction in Diffuse Optical Tomography
We present an efficient method for the reduction of model equations in the linearized diffuse optical tomography (DOT) problem. We first implement the maximum a posteriori (MAP) estimator and Tikhonov regularization, which are based on applying preconditioners to linear perturbation equations. For model reduction, the precondition is split into two parts: the principal components are consid...
متن کاملDiffuse optical tomography with physiological and spatial a priori constraints.
Diffuse optical tomography is a typical inverse problem plagued by ill-condition. To overcome this drawback, regularization or constraining techniques are incorporated in the inverse formulation. In this work, we investigate the enhancement in recovering functional parameters by using physiological and spatial a priori constraints. More accurate recovery of the two main functional parameters th...
متن کاملOptimal Analysis Method for Dynamic Contrast-Enhanced Diffuse Optical Tomography
Diffuse Optical Tomography (DOT) is an optical imaging modality that has various clinical applications. However, the spatial resolution and quantitative accuracy of DOT is poor due to strong photon scatting in biological tissue. Structural a priori information from another high spatial resolution imaging modality such as Magnetic Resonance Imaging (MRI) has been demonstrated to significantly im...
متن کاملDiffuse Optical Tomography
33 Volume images of the body are an indispensable clinical diagnostic tool. For visualizing and examining complex body organs such as the brain, doctors depend on the information 3D imaging modalities, such as x-ray computed tomography (CT) and magnetic resonance imaging (MRI), provide. Although these mature techniques have developed into reliable systems delivering high-quality images, some dr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: NeuroImage
سال: 2006
ISSN: 1053-8119
DOI: 10.1016/j.neuroimage.2005.09.016