AI Article Synopsis
- This study focuses on using high-resolution MRI techniques to better understand the human visual system through a method called diffusion tensor fiber tractography (DTT).
- It involved five healthy male participants, aged 24-37, who provided data after the university's ethics approval.
- The researchers successfully reconstructed and quantified critical components of the visual pathways, such as the optic chiasm and optic tracts, using a specialized imaging protocol that minimized interference from other brain structures.
Article Abstract
Quantification of the living human visual system using MRI methods has been challenging, but several applications demand a reliable and time-efficient data acquisition protocol. In this study, we demonstrate the utility of high-spatial-resolution diffusion tensor fiber tractography (DTT) in reconstructing and quantifying the human visual pathways. Five healthy males, age range 24-37years, were studied after approval of the institutional review board (IRB) at The University of Texas Health Science Center at Houston. We acquired diffusion tensor imaging (DTI) data with 1-mm slice thickness on a 3.0-Tesla clinical MRI scanner and analyzed the data using DTT with the fiber assignment by continuous tractography (FACT) algorithm. By utilizing the high-spatial-resolution DTI protocol with FACT algorithm, we were able to reconstruct and quantify bilateral optic pathways including the optic chiasm, optic tract, optic radiations free of contamination from neighboring white matter tracts.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4099254 | PMC |
| http://dx.doi.org/10.1016/j.mri.2014.04.002 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Visual analysis of the research frontiers, hotspots and development trends of immunization programs for women and children.
Hum Vaccin Immunother
December 2025
Department of Pediatrics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xian, Shanxi, PR China.
The objective of this study is to gain insight into the current research frontiers, hotspots, and development trends in the field of immunization programs for women and children, and to provide scientific guidance and reference for follow-up research. Based on all the original research papers related to the research on immunization programs for women and children in the Web of Science Core Collection (WoSCC) database, bibliometric studies and visual analysis were carried out to explore the research frontiers, hotspots and development trends, and to analyze the risk factors affecting the vaccination coverage of immunization programs for women and children. Eight hundred forty-three papers obtained from 1,552 institutions in 96 countries/regions from January 1950 to August 2024, coauthored by 4,343 authors.
View Article and Find Full Text PDFInflammatory Biomarkers and Tinnitus in Older Adults.
Noise Health
January 2025
Associate Postgraduation Program UEL/UNOPAR, Curitiba, Paraná, Brazil.
Background: Tinnitus refers to a common disorder affecting older adults frequently. This condition can disturb mental health and psychological well-being and contribute to cognitive decline. Despite recent advances in research, its pathophysiology remains incompletely understood.
View Article and Find Full Text PDFRelationship between Age-Related Hearing Loss and Age-Related Macular Degeneration.
Noise Health
January 2025
Department of Ophthalmology, Ningde Municipal Hospital of Ningde Normal University, Ningde, Fujian, China.
Background: With the aging of the population, the deterioration of visual and auditory functions amongst the elderly has attracted much attention. Age-related hearing loss (ARHL) and age-related macular degeneration (AMD) are common eye and ear diseases that seriously affect the quality of life of elderly population.
Methods: This study utilised a whole cohort sampling method, with a total of 713 participants aged 50 years and older in the community from June 2022 to October 2023, resulting in the inclusion of 620 participants.
Association of Medial Temporal Lobe Cerebrovascular Reactivity and Memory Function in Older Adults With and Without Cognitive Impairment.
Neurology
January 2025
Leonard Davis School of Gerontology, University of Southern California, Los Angeles.
Background And Objectives: Cerebrovascular reactivity (CVR) represents the ability of cerebral blood vessels to regulate blood flow in response to vasoactive stimuli and is related to cognition in cerebrovascular and neurodegenerative conditions. However, few studies have examined CVR in the medial temporal lobe, known to be affected early in Alzheimer disease and to influence memory function. We aimed to examine whether medial temporal CVR is associated with memory function in older adults with and without mild cognitive impairment (MCI).
View Article and Find Full Text PDF3D Imaging Resolves Human Pancreatic Duct-β-Cell Clusters During Cystic Change.
Diabetes
January 2025
Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan.
Pancreatic cystic changes in adults are increasingly identified through advanced cross-sectional imaging. However, the impact of initial/intra-lobular epithelial remodeling on the local β-cell population remains unclear. In this study, we examined 10 human cadaveric donor pancreases (tail and body regions) via integration of stereomicroscopy, clinical H&E histology, and 3D immunohistochemistry, identifying 36 microcysts (size: 1.
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!