In conventional X-ray imaging based on fixed energy, the ray image of the complicated structural component often appears overexposed or underexposed. This is because of the variations in the effective thickness of the component along the orientation of the X-ray penetration that exceed the limit of the dynamic range of the X-ray imaging system. Complete structural information cannot be obtained, and this lack will impact the quality of the X-ray image. To solve this problem, the technology of X-ray multispectrum imaging based on variable energy has advanced. In this new method, the tube voltage is adjusted several times to accommodate the full necessary range of effective thickness, and then, the extracted images are fused to reconstruct the full projection information. Experiment shows that for the 12 bit imaging system, the new technology makes the system's dynamic range expand 4 times, also completely represent the internal structure information of a complicated structural component.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
International web-based survey of patients with non-hydrocephalic symptomatic pineal cysts.
Acta Neurochir (Wien)
December 2024
Department of Neurosurgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
Objectives: To report the results of an international patient-reported survey that adds to the growing body of evidence surrounding the role of surgery in the management of a subset of patients with non-hydrocephalic symptomatic pineal cyst.
Design: An international web-based survey of health outcomes in patients with nhSPC.
Subjects: All survey participants who self-reported a diagnosis of symptomatic pineal cyst without hydrocephalus after radiological imaging.
Non-invasive pressure-volume loop derived temporal elastance, contractility, and efficiency indices for assessing Duchenne muscular dystrophy patients.
Heart Vessels
December 2024
Department of Biomedical Engineering, Veterans Affairs Medical Center, University of Cincinnati, Rhodes Hall 593, 2851 Woodside Drive, Cincinnati, OH, 45219, USA.
Ejection fraction is commonly used to assess Duchenne muscular dystrophy-associated cardiomyopathy (DMDAC), but it may remain normal (wrongly) despite significant myocardial dysfunction in patients. Therefore, better indicators of myocardial dysfunction are needed for longitudinal (with time) assessment and treatment of DMDAC patients. This study evaluates non-invasive LV PV loop-derived elastance, contractility and efficiency in relation to EF for patients developing DMDAC.
View Article and Find Full Text PDFCommunity health promotion and disaster recovery: a PhotoVoice project in Comerío, Puerto Rico.
Arts Health
December 2024
Department of Urban & Regional Planning, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, USA.
Background: PhotoVoice - a series of workshops involving participatory photography and narrative-building - was employed in the rural town of Comerío, Puerto Rico (PR) to describe disaster recovery in a rural setting and foster policy dialogue.
Methods: Using PhotoVoice workshops and ethnographic observations, the project describes how women affiliated with a local community-based organization described the priorities for disaster recovery in visual images and narratives. We draw analytically upon theories of intersectionality and coloniality to describe socio-structural and community factors that shape community health in the context of ongoing disasters.
Correlation between ultrasonography and elastography parameters and molecular subtypes of breast cancer in young women.
Ann Med
December 2025
Department of Ultrasonographl, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Third Hospital of Shanxi Medical University, Tongji Shanxi Hospital, Taiyuan, Shanxi Province, China.
Objective: To explore the differences of conventional ultrasound characteristics, elastic imaging parameters and clinicopathological characteristics of distinct molecular subtypes of breast cancer in young women, and to identify imaging parameters that exhibited significant associations with each molecular subtype.
Methods: We performed a retrospective analysis encompassing 310 young women with breast cancer. Observations were made regarding the ultrasonography and elastography characteristics of the identified breast lesions.
Individuals with Heterogenous Trabecular Bone Texture by Clinical MRI have Lower Bone Strength and Stiffness by QCT Based Finite Element Analysis.
J Bone Miner Res
December 2024
Division of Endocrinology/Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY.
Opportunistic screening is essential to improve the identification of individuals with osteoporosis. Our group has utilized image texture features to assess bone quality using clinical MRIs. We have previously demonstrated that greater heterogeneity of MRI texture related to history of fragility fractures, lower bone density, and worse microarchitecture.
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!