The statistical characteristic is the key to image compression. Here we have studied the statistical characteristic of wavelet subimage, and designed a new image quantization algorithm referred to statistical characteristics of both wavelet subimage and human visual.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Association between abnormal systemic coagulation inflammation index and recurrence of deep venous thrombosis as well as quality of life: A retrospective study.
Phlebology
January 2025
Department of Clinical Laboratory, The Second Hospital Affiliated Fujian Medical University, Quanzhou, China.
Background: Deep vein thrombosis (DVT) of the lower limb is a significant clinical challenge with the potential for recurrence, which can lead to increased morbidity and reduced quality of life.
Methods: A retrospective case-control study was conducted involving 367 patients diagnosed with lower limb DVT from June 2020 to June 2023. Patients were categorized into a recurrence group ( = 121) and a non-recurrence group ( = 246) based on DVT occurrence.
Establishing Reference Values in the Neuromuscular Ultrasound Laboratory Using the e-Norms Method: A Feasibility Study.
Muscle Nerve
January 2025
Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA.
Introduction/aims: The standard procedure to establish reference values in a neuromuscular laboratory involves examining healthy controls, as nerve size varies with the population and muscle echo intensity (EI) is device-specific. We aimed to derive these reference values by extrapolation from a studied sample (the e-norms method), compare them with published reference values, and determine their diagnostic accuracy.
Methods: We retrospectively analyzed data from consecutive patients who underwent nerve and/or muscle ultrasound in our ultrasound laboratory, which is a tertiary referral center for neuromuscular diseases in Southern Poland in the years 2018-2023.
Uniaxial compressive damage evolution and constitutive modeling of fissure-like rocks under different loading rates based on acoustic emission.
Sci Rep
January 2025
School of Resource, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China.
In natural environments, most rocks possess internal fissures and are often exposed to diverse external loads arising from engineering activities and ground stress, among other factors. This study aims to explore the influence of different loading rates on the mechanical properties and acoustic emission (AE) characteristics of fissured rocks and to develop an intrinsic damage model. To achieve this, prefabricated fissured rock specimens that mimic natural rocks were prepared.
View Article and Find Full Text PDFUnilateral and bilateral PVP for thoracolumbar OVCF with distant lumbosacral pain: a single-center retrospective analysis.
World Neurosurg
January 2025
Department of Orthopaedics, General Hospital of Northern Theatre Command, Shenyang 110016. Electronic address:
Backgrounds: Previous studies have found that percutaneous vertebroplasty (PVP) can effectively improve the local pain of the affected vertebra caused by thoracolumbar osteoporotic vertebral compression fracture (OVCF) regardless of unilateral or bilateral puncture, but there are few reports on whether it is equally effective for the accompanying distant lumbosacral pain.
Objective: To analyze the clinical effect of unilateral or bilateral PVP on thoracolumbar OVCF with distant lumbosacral pain.
Methods: The clinical data of patients with single-stage OVCF treated with PVP in our hospital from March 2019 to March 2023 were retrospectively analyzed.
A data-driven framework for developing a unified density-modulus relationship for the human lumbar vertebral body.
J Mech Behav Biomed Mater
January 2025
Department of Mechanical Engineering, Boston University, Boston, MA 02215, USA; Center for Multiscale and Translational Mechanobiology, Boston University, Boston, MA 02215, USA; Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA.
Despite the broad agreement that bone stiffness is heavily dependent on the underlying bone density, there is no consensus on a unified relationship that applies to both cancellous and cortical compartments. Bone from the two compartments is generally assessed separately, and few mechanical test data are available for samples from the transitional regions between them. In this study, we present a data-driven framework integrating experimental testing and numerical modeling of the human lumbar vertebra through an energy balance criterion, to develop a unified density-modulus relationship across the entire vertebral body, without the necessity of differentiation between trabecular and cortical regions.
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!