We propose a method for improving image quality in medical images by using a wavelet-based approach. The proposed method integrates two components: image denoising and image enhancement. In the first component, a modified undecimated discrete wavelet transform is used to eliminate the noise. In the second component, a wavelet coefficient mapping function is applied to enhance the contrast of denoised images obtained from the first component. This methodology can be used not only as a means for improving visual quality of medical images but also as a preprocessing module for computer-aided detection/diagnosis systems to improve the performance of screening and detecting regions of interest in images. To confirm its superiority over existing state-of-the-art methods, the proposed method is experimentally evaluated via 30 mammograms and 20 chest radiographs. It is demonstrated that the proposed method can further improve the image quality of mammograms and chest radiographs, as compared to two other methods in the literature. These results reveal the effectiveness and superiority of the proposed method.
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http://dx.doi.org/10.1155/2013/797924 | DOI Listing |
Mikrochim Acta
December 2024
Department of Chemistry, Yazd University, Yazd, 89195-741, Iran.
An electrochemical aptasensor has been developed specifically for the sensitive and selective determination of ochratoxin A (OTA), one of the most important mycotoxins. The aptasensor utilizes a glassy carbon electrode that has been modified with toluidine blue (TB) encapsulated in a Zn-based metal-organic framework (TB@Zn-MOF). The results demonstrate that in the presence of OTA, the peak current of the differential pulse voltammogram (DPV) related to TB oxidation is notably decreased.
View Article and Find Full Text PDFAnn Biomed Eng
December 2024
Eco-Friendly Smart Ship Parts Technology Innovation Center, Pusan National University, Busan, Republic of Korea.
Shins are one of the most vulnerable bones in human body. Shin guards are evaluated by their effectiveness in reducing the force applied to the bone. In this study, a structural modified mechanical lumped model of the shin guard was developed to provide maximum force distribution using physical parameter change modification technique and genetic algorithm.
View Article and Find Full Text PDFTrop Med Health
December 2024
Department of Global Health, Graduate School of Health Sciences, University of the Ryukyus, Nishihara, Japan.
Introduction: The COVID-19 pandemic has severely impacted the health and education of learners globally. However, there is a lack of information on enablers and barriers to the implementation of comprehensive school health policies during the pandemic.
Methods: This study utilized a case study design, and was conducted in the Division of City Schools of Navotas.
Arch Public Health
December 2024
Panzhihua Central Hospital, Panzhihua, China.
Background: At present, China's elderly population is facing several difficulties. The implementation of active aging is an important initiative in the face of the rapidly developing situation of population aging, among which improving elderly expectations regarding the aging level is the key link to achieving active aging. Improving the quality of life of the majority of elderly individuals is the main goal of active aging.
View Article and Find Full Text PDFJ Orthop Surg Res
December 2024
Spinal Ward, The 900th Hospital of Joint Logistic Support Force, PLA, 156 Xierhuan Northern Road, FuZhou, 350025, China.
Background: There is currently no consensus on the surgical treatment of lumbar spondylolysis in young adults, and the nonunion rate remains relatively high even after surgery. Therefore, in this study, we proposed a modified intravertebral screw-rod fixation technique within a single vertebral segment and investigated the clinical efficacy of this modified fixation system combined with autologous cancellous bone grafting in the treatment of lumbar spondylolysis in young adults.
Methods: This study included 28 young adults with lumbar spondylolysis who were treated at our center between 2021 and 2023.
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