Model-resolution based regularization improves near infrared diffuse optical tomography

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
Sree Harsha Katamreddy, Phaneendra K Yalavarthy

Abstract

Diffuse optical tomographic imaging is known to be an ill-posed problem, and a penalty/regularization term is used in image reconstruction (inverse problem) to overcome this limitation. Two schemes that are prevalent are spatially varying (exponential) and constant (standard) regularizations/penalties. A scheme that is also spatially varying but uses the model information is introduced based on the model-resolution matrix. This scheme, along with exponential and standard regularization schemes, is evaluated objectively based on model-resolution and data-resolution matrices. This objective analysis showed that resolution characteristics are better for spatially varying penalties compared to standard regularization; and among spatially varying regularization schemes, the model-resolution based regularization fares well in providing improved data-resolution and model-resolution characteristics. The verification of the same is achieved by performing numerical experiments in reconstructing 1% noisy data involving simple two- and three-dimensional imaging domains.

References

May 1, 1997·Physics in Medicine and Biology·S R Arridge, J C Hebden
Jul 27, 2004·Physics in Medicine and Biology·Xavier IntesBritton Chance
Mar 19, 2005·Physics in Medicine and Biology·A P GibsonS R Arridge
May 7, 2005·Physics in Medicine and Biology·Martin SchweigerIlkka Nissilä
Jun 3, 2005·Physics in Medicine and Biology·Murat GuvenBritton Chance
Mar 6, 2008·Applied Optics·B W PogueK D Paulsen
Jul 2, 2008·Physics in Medicine and Biology·Sangtae AhnRichard M Leahy
Nov 22, 2008·Journal of Biomedical Optics·Steven L Jacques, Brian W Pogue
Jul 8, 2009·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Adam Gibson, Hamid Dehghani
Jul 8, 2009·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Hamid DehghaniAdam Gibson
Aug 15, 2008·Communications in Numerical Methods in Engineering·Hamid DehghaniKeith D Paulsen
Apr 13, 2011·Biomedical Optics Express·Fridrik LarussonEric L Miller

❮ Previous
Next ❯

Citations

Mar 19, 2013·Medical & Biological Engineering & Computing·Xu CaoJing Bai
Dec 11, 2013·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Ravi Prasad K Jagannath, Phaneendra K Yalavarthy
Apr 9, 2014·IEEE Transactions on Medical Imaging·Jaya PrakashPhaneendra K Yalavarthy

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2021 Meta ULC. All rights reserved