Bioluminescence tomography (BLT) is an effective molecular imaging (MI) modality. Because of the ill-posedness, the inverse problem of BLT is still open. We present a trust region method (TRM) for BLT source reconstruction. The TRM is applied in the source reconstruction procedure of BLT for the first time. The results of both numerical simulations and the experiments of cube phantom and nude mouse draw us to the conclusion that based on the adaptive finite element (AFE) framework, the TRM works in the source reconstruction procedure of BLT. To make our conclusion more reliable, we also compare the performance of the TRM and that of the famous Tikhonov regularization method after only one step of mesh refinement of the AFE framework. The conclusion is that the TRM can get faster and better results after only one mesh refinement step of AFE framework than the Tikhonov regularization method when handling large scale data. In the TRM, all the parameters are fixed, while in the Tikhonov method the regularization parameter needs to be well selected.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.18.006477 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Mentorship in Plastic Surgery: A Systematic Review of the Current Literature and Elucidation of Recurring Themes.
Plast Reconstr Surg Glob Open
January 2025
Department of Orthopedics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
Background: Mentorship is an integral part of developing competent, passionate, and successful plastic surgeons and is an important element of surgeons' wellness. Although mentorship programs have been described in the literature, this study aimed to elucidate the specific qualities of an effective mentor in plastic surgery.
Methods: Preferred Reporting Items for Systematic Reviews and Meta-analyses methodology was utilized to conduct a systematic review of the literature.
Ranking Surgeon Performance After ACL Reconstruction Using the Knee Injury and Osteoarthritis Outcome Score (KOOS) Subscales.
Orthop J Sports Med
January 2025
Center for Effectiveness Research in Orthopaedics, Greenville, South Carolina, USA.
Background: Patient-reported outcomes (PROs) are considered the gold standard for evaluating value-based care in orthopaedics. However, there is little evidence to guide implementation of PROs for surgeon performance evaluation.
Purpose: To develop a risk-adjusted surgeon performance measure using the Knee injury and Osteoarthritis Outcome Score (KOOS) for patients undergoing anterior cruciate ligament reconstruction (ACLR).
Superior Outcomes with Ultrasound-Guided Hyaluronidase for Impending Filler-Induced Facial Skin Necrosis: A Systematic Review and Pilot Meta-Analysis.
Aesthetic Plast Surg
January 2025
Department of Plastic and Reconstructive Surgery, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
Background: Hyaluronidase remains the mainstay treatment for impending filler-induced facial skin necrosis. Complete resolution of impending skin necrosis following hyaluronidase injection is estimated to be around 77.8%.
View Article and Find Full Text PDFAdult bi-paternal offspring generated through direct modification of imprinted genes in mammals.
Cell Stem Cell
January 2025
State Key Laboratory of Organ Regeneration and Reconstruction, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Bejing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China. Electronic address:
Imprinting abnormalities pose a significant challenge in applications involving embryonic stem cells, induced pluripotent stem cells, and animal cloning, with no universal correction method owing to their complexity and stochastic nature. In this study, we targeted these defects at their source-embryos from same-sex parents-aiming to establish a stable, maintainable imprinting pattern de novo in mammalian cells. Using bi-paternal mouse embryos, which exhibit severe imprinting defects and are typically non-viable, we introduced frameshift mutations, gene deletions, and regulatory edits at 20 key imprinted loci, ultimately achieving the development of fully adult animals, albeit with a relatively low survival rate.
View Article and Find Full Text PDFUnveiling heterointerface activation effects with different titanium dioxide crystal phases for electrocatalytic nitrate-to-ammonia reduction.
J Hazard Mater
January 2025
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China. Electronic address:
Nitrate pollution poses severe risks to aquatic ecosystems and human health. The electrocatalytic nitrate reduction reaction (NITRR) offers a promising environmental and economic solution for nitrate pollution treatment and nitrogen source recovery; however, it continues to experience limited efficiency in neutral electrolytes. This study explores the heterointerface activation effects of TiO/CuO heterogeneous catalysts with rutile (R-TiO) and anatase (A-TiO) phases and reveals that R-TiO is an active crystal phase with high nitrate reduction performance.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!