Open Neuroimaging Journal最新文献

{"title":"Comparative Analysis of Bilateral Filter and its Variants for Magnetic Resonance Imaging","authors":"Bobbinpreet Kaur, Ayush Dogra, Bhawna Goyal","doi":"10.2174/1874440002013010021","DOIUrl":"https://doi.org/10.2174/1874440002013010021","url":null,"abstract":"The idea of a noiseless system is still hypothetical. All the practical systems have some amount of noise present in them. This noise occurs basically due to the design and structure of acquisition devices. The efficiency of various fields of image processing is largely affected by the quantity of noise. Noise is an undesired portion present in the signals which hinders the quality and efficient transmission. While considering Noise in Images, it largely changes the information content present in the Image.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":"13 1","pages":"21-29"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42778676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brain Age Estimation Using UK Biobank Data: Methodologies and Outcomes","authors":"Ahmed M. A. Salih","doi":"10.2174/18744400-v13-e221007-2020-5","DOIUrl":"https://doi.org/10.2174/18744400-v13-e221007-2020-5","url":null,"abstract":"Brain age estimation has received much attention from neurologists and researchers in recent years. It can be used to track cognition development and monitoring brain diseases progress throughout life span for both healthy and patient’s people. Different methods and data have been used to predict age of brain based on research objective. Supervised ma-chine learning methods are used to estimate brain age as a regression problem. UK Biobank is a large cohort prospective that gathered health related data about 500, 000 British aged between 40 and 69 since 2006. Many studies have used UK biobank data to estimate brain age. We discuss their methods, data used and the objective of these studies. We also highlight the differences among them despite the use of same data and for the same purpose.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47387591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hemicerebrum Infarction or Artifact: Effects of Out-of Center Positioning","authors":"Rob J. J. Westerlaken, Antoine van der Linden, Laurien Oosterwijk, L. Bok, C. Pul, F. Halbertsma","doi":"10.2174/1874440002013010016","DOIUrl":"https://doi.org/10.2174/1874440002013010016","url":null,"abstract":"CT scan (or X-ray computed tomography (X-ray CT) or computerized axial tomography scan (CAT scan)), has revolutionized neurologic imaging and diagnostic possibilities since its introduction. Although MRI can provide more detailed information, CT remains valuable due to its easy accessibility and prompt results. And especially in smaller children, there is hardly ever a necessity for sedation as opposed to MRI.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":"13 1","pages":"16-20"},"PeriodicalIF":0.0,"publicationDate":"2020-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41403815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Traditional and Advanced Neuroimaging Contributions to the Diagnosis and Differential Diagnosis of Central Nervous System Lymphoma Patients Visiting a Comprehensive Medical Center","authors":"Ali M. El Dirani, Zahraa Hachem, A. Mohanna, A. Zaylaa","doi":"10.2174/1874440002013010006","DOIUrl":"https://doi.org/10.2174/1874440002013010006","url":null,"abstract":"\u0000 \u0000 The diagnosis of Central Nervous System Lymphoma, especially the Primary Central Nervous System Lymphoma is carried out based on brain imaging, thus avoiding an unnecessary extend of surgery. But the traditional imaging techniques, such as Computed Tomography and Magnetic Resonance Imaging, were not satisfactory.\u0000 \u0000 \u0000 \u0000 This study was conducted to characterize the spectrum of advanced Neuroimaging, such as the advanced Magnetic Resonance Imaging features in the Central Nervous System Lymphoma patients in a comprehensive medical center in Lebanon, and compare them to what has been described in the literature review.\u0000 \u0000 \u0000 \u0000 It is a retrospective exploratory study of the clinical data and imaging features for patients admitted to the emergency and radiology departments with ages above 10 years, and who were diagnosed histopathologically with intracranial lymphoma. This study may be the first to make a Radiological evaluation of Central Nervous System Lymphoma on the local population of patients over 9 years .\u0000 \u0000 \u0000 \u0000 Results showed that the study of the Computed Tomography and Magnetic Resonance Imaging data of 10 immunocompetent patients with Central Nervous System Lymphoma concurs with the previously described patient populations, except for the gender parameter. Tumors were mostly presented in the fifth or Sixth decade and they could be solitary or multi-focal. Lesions were typically located Preprint submitted to The Open Neuroimaging Journal May 14, 2020 in the supratentorial compartment. On the brain Computed Tomography, the lesions were hyperdense, and in pre-contrast Magnetic Resonance images, the lesions appeared hypointense on T1 and hyperintense on T2-Weighted images, but hypointense with respect to the grey matter. The lesions were also surrounded with a mild to moderate edema as compared to other intracranial neoplasms, such as glioblastomas. Evaluation results showed that on post-contrast Magnetic Resonance images, the majority of lesions exhibited a homogeneous enhancement of 50%. Majority of the lesions also showed a less common heterogeneous ring-like enhancement of 40%, and revealed the uncommon absence of enhancement of 10%. Calcifications, hemorrhage, and necrosis were rare findings and were present in only one patient.\u0000 \u0000 \u0000 \u0000 As a future prospect, studying whether the advanced imaging techniques may provide not only non-invasive and morphological characteristics but also non-invasive biological characteristics and thus accurate diagnosis could be considered.\u0000","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43724238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paroxysmal Lower Limb Tremor as a Rare Presentation of Colloid Cyst of the Third Ventricle: A Case Report and Literature Review","authors":"Efthalia Angelopoulou, Eleftheria Koropouli, G. Velonakis, G. Koutsis, M. Anagnostouli, Ioannis, Tzartos, Dimitrios Tzanetakos, G. Stranjalis, C. Kilidireas, M. Evangelopoulos","doi":"10.2174/1874440002013010001","DOIUrl":"https://doi.org/10.2174/1874440002013010001","url":null,"abstract":"Colloid cysts of the third ventricle are benign intracranial tumors. They are most commonly presented with signs of intracranial hypertension due to obstructive hydrocephalus, including headache, nausea/vomiting and vision disturbances, whereas extrapyramidal symptoms such as tremor are very rare. Sudden death, due to abruptly developed hydrocephalus, can be also observed. Although paroxysmal symptomatology attributed to the intermittent obstruction of the foramen of Monro is considered the “classical” clinical presentation, it is rather the exception in clinical practice.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":"13 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41504605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of Progress in Atomic Force Microscopy","authors":"S. Maghsoudy-Louyeh, M. Kropf, B. Tittmann","doi":"10.2174/1874440001812010086","DOIUrl":"https://doi.org/10.2174/1874440001812010086","url":null,"abstract":"The study of biological samples is one of the most attractive and innovative fields of application of atomic force microscopy AFM. Recent breakthroughs in software and hardware have revolutionized this field and this paper reports on recent trends and describes examples of applications on biological samples. Originally developed for high-resolution imaging purposes, the AFM also has unique capabilities as a nano-indentor to probe the dynamic visco-elastic material properties of living cells in culture. In particular, AFM elastography combines imaging and indentation modalities to map the spatial distribution of cell mechanical properties, which in turn reflect the structure and function of the underlying structure. This paper describes the progress and development of atomic force microscopy as applied to animal and plant cell structures.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44150300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visualization of Medical Problems for Early Detection","authors":"Sanchiro Yoshida","doi":"10.2174/1874440001812010066","DOIUrl":"https://doi.org/10.2174/1874440001812010066","url":null,"abstract":"In the recent advancement of the medical science, the improvement in the diagnostic technology plays an extremely important role. Needless to say, early detection of a medical problem and its accurate diagnosis provide more options in the treatment, resulting in a better prognosis and recovery rate. From the diagnostic technological point of view, there are two factors that should be addressed. The first one is that the technology be with a high spatial resolution. Ideally, the spatial resolution should be at the cell-level. The other factor is that the diagnostic procedure be as least invasive as possible. Oftentimes, invasive procedures not only cause discomfort to the patient but also cause substantial damage to the patient’s condition and thereby degrade the prognosis.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43841433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contrast Mechanisms for Tumor Cells by High-frequency Ultrasound","authors":"Y. Juntarapaso, C. Miyasaka, R. Tutwiler, P. Anastasiadis","doi":"10.2174/1874440001812010105","DOIUrl":"https://doi.org/10.2174/1874440001812010105","url":null,"abstract":"Scanning Acoustic Microscopy (SAM) is a powerful technique for both the non-destructive determination of mechanical and elastic properties of biological specimens and for the ultrasonic imaging at a micrometer resolution. The implication of biomechanical properties during the onset and progression of disease has been established rendering a profound understanding of the relationship between mechanoelastic and biochemical signaling at a molecular level crucial. Computer simulation algorithms were developed for the generation of images and the investigation of contrast mechanisms in high-frequency and ultra-high frequency SAM. Furthermore, we determined the mechanical and elastic properties of HeLa and MCF-7 cells. Algorithms for simulatingV(z)responses were developed based on the ray and wave theory (angular spectrum). Theoretical simulations for high-frequency SAM array designs were performed with the Field II software. In these simulations, we applied phased array beam formation and dynamic apodization and focusing. The purpose of our transducer simulations was to explore volumetric imaging capabilities. The novel transducer arrays designed in this research aim at improving the performance of SAM systems by introducing electronic steering and hence, allowing for the 4D imaging of cells and tissues.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43750326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overview of Recent Advancement in Ultrasonic Imaging for Biomedical Applications","authors":"C. Miyasaka, Sanchiro Yoshida","doi":"10.2174/1874440001812010133","DOIUrl":"https://doi.org/10.2174/1874440001812010133","url":null,"abstract":"This paper discusses the application of acoustic microscopy to the detection of cancerous cells. Acoustic microscopy is a welldeveloped technique but the application to biological tissues is challenging. Acoustic microscopy images abnormality based on the difference in the acoustic impedance from the background. One of the difficulties in the biomedical applications is that since both normal and abnormal cells consist of mostly water, their acoustic impedance is quite close to each other. Consequently, the contrast of the image tends to be low. Another issue is concerning the spatial resolution. For higher resolution, the use of a short wavelength is essential. However, since the attenuation of an ultrasonic signal increases quadratically with the frequency, the reduction in the wavelength compromises the image quality. The present paper addresses these issues and describes various techniques to overcome the problems.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42176896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic Analysis of Vibration, Muscle Firing, and Force as a Novel Model for Non-Invasive Assessment of Joint Disruption in the knee: A Multiple Case Report","authors":"D. Hollander, S. Yoshida, U. Tiwari, A. Saladino, M. Nguyen, Benjamin D. Boudreaux, B. Hadley","doi":"10.2174/1874440001812010120","DOIUrl":"https://doi.org/10.2174/1874440001812010120","url":null,"abstract":"We present a new method for understanding knee pathology through non-invasive techniques. The combination of electromyography (EMG), vibroarthrographic (VAG), and force analysis in proposed to examine the force transfer between unhealthy and healthy knees. A multiple case report is presented to demonstrate the technique and its potential application for future study. The comparison of four individuals’ knee characteristics will be explained using this innovative methodology.","PeriodicalId":37431,"journal":{"name":"Open Neuroimaging Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46689211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}