Filters








92,225 Hits in 8.7 sec

Improving the signal detection accuracy of functional Magnetic Resonance Imaging

Niels Janssen, Juan A. Hernández-Cabrera, Laura Ezama Foronda
2018 NeuroImage  
A major drawback of functional Magnetic Resonance Imaging (fMRI) concerns the lack of detection accuracy of the measured signal.  ...  The new slice-based data-analytic framework yields greatly improved signal detection accuracy of fMRI signals.  ...  Improved echo 1258 volumar imaging (evi) for functional mri. Magnetic resonance in 1259 medicine, 56, 1320-1327.  ... 
doi:10.1016/j.neuroimage.2018.01.076 pmid:29655939 fatcat:fsuhj73mlnfd5nfxadzit7cobi

Improved Fuzzy C-Means Algorithm for Brain Tumor Identification Analysis Using Magnetic Resonance Brain Images

Isselmou Abd El kader, Shuai Zhang, Guizhi Xu
2017 Journal of Biomedical Engineering and Medical Imaging  
of tumor identification in the resonance brain images and the second stage analysis of the algorithm performance using accuracy detection, TC, DOI, sensitivity and specificity, the improved fuzzy c-means  ...  In this paper we processed the magnetic resonance brain images, which is the most advanced medical images using the improved fuzzy c-means algorithm, this process consists of two stages, the first stage  ...  Magnetic resonance imaging techniques have an excellent importance in the domain of diagnosis the organs of the body is simulated using resonant radio frequency signals.  ... 
doi:10.14738/jbemi.43.3110 fatcat:l7yxvtk5ozblpgky2dw7thgnru

Functional Magnetic Resonance Imaging in Prostate Cancer

Michael Seitz, Amita Shukla-Dave, Anders Bjartell, Karim Touijer, Alessandro Sciarra, Patrick J. Bastian, Christian Stief, Hedvig Hricak, Anno Graser
2009 European Urology  
resonance imaging (MRI) combined with magnetic resonance spectroscopy imaging (MRSI), dynamic contrast-enhanced MRI, and diffusion-weighted MRI emerged as promising tests in the diagnosis of prostate  ...  Conclusions: A limited number of small studies suggest that functional MRI may improve the diagnosis and staging of prostate cancer.  ...  Diagnostic accuracy of magnetic resonance imaging techniques at 1.5 T Tumor detection and localization 3.3.1.1. Magnetic resonance imaging.  ... 
doi:10.1016/j.eururo.2009.01.027 pmid:19185981 fatcat:yuuyijgpzfe4zic6f7xthz6xtm

Cardiac magnetic resonance imaging in patients with coronary disease

Henry D. Wu, Raymond Y. Kwong
2008 Current Treatment Options in Cardiovascular Medicine  
Cardiac magnetic resonance (CMR) has emerged as a versatile noninvasive tool for the comprehensive evaluation of patients with suspected or established coronary artery disease (CAD).  ...  Also, the imaging planes can be programmed to provide identical views of the heart for each type of image, thereby facilitating intermodality comparisons.  ...  Improved detection of coronary artery disease by stress perfusion cardiovascular magnetic resonance with the use of delayed enhancement infarction imaging. J Am Coll Cardiol. 2006; 47:1630-1638.  ... 
doi:10.1007/s11936-008-0009-x pmid:18325310 pmcid:PMC3955035 fatcat:aagqi3kzevgnbclu2kpmcafyje

Value of CA19-9, CA125 and CEA combined magnetic resonance imaging in the diagnosis of pancreatic cancer

Ying Huang, You-Li Jian, Hong Chen
2018 Journal of Hainan Medical University  
The change of magnetic resonance scanning parameters and serum CA19-9, CA125 and CEA detection were compared between the two groups of subjects at the same time, contrast scan and serum magnetic resonance  ...  Conclusion: CA19-9, CA125 and CEA combined magnetic resonance imaging (MRI) have good sensitivity and accuracy in diagnosis of pancreatic cancer, but their specificity is common, which should be used for  ...  At any time, the continuous improvement of MRI diagnostic technology can enhance functional imaging and enhance the function of scanning and other post-processing functions.  ... 
doaj:706a9e4e8d39493981708b175e2a61d3 fatcat:7v4lmpwk7rfzjjjpde4omdprau

Medical Image Segmentation Algorithm Based on Multi-scale Color Wavelet Texture

Qi Zhang, Yan Li
2021 North atlantic university union: International Journal of Circuits, Systems and Signal Processing  
In order to improve the segmentation accuracy of brain tumor magnetic resonance medical image, a segmentation method of brain tumor magnetic resonance medical image based on multi-scale color wavelet texture  ...  Simulation results show that the proposed method can effectively improve the segmentation accuracy of brain tumor MRI medical image, and has high resolution and accuracy for suspicious brain tumor detection  ...  Information fusion can improve the recognition ability of brain tumor magnetic resonance medical images. But there are still problems of low detection resolution and accuracy [5] .  ... 
doi:10.46300/9106.2021.15.99 fatcat:sd3dtue4rnbkbdd66fndus2wdu

Current role of multiparametric magnetic resonance imaging for prostate cancer

Romaric Loffroy, Olivier Chevallier, Morgan Moulin, Sylvain Favelier, Pierre-Yves Genson, Pierre Pottecher, Gilles Crehange, Alexandre Cochet, Luc Cormier
2015 Quantitative Imaging in Medicine and Surgery  
Multiparametric magnetic resonance imaging (mp-MRI) has shown promising results in diagnosis, localization, risk stratification and staging of clinically significant prostate cancer, and targeting or guiding  ...  prostate biopsy. mp-MRI consists of T2-weighted imaging (T2WI) combined with several functional sequences including diffusion-weighted imaging (DWI), perfusion or dynamic contrast-enhanced imaging (DCEI  ...  Footnote Conflicts of Interest: The authors have no conflicts of interest to declare.  ... 
doi:10.3978/j.issn.2223-4292.2015.10.08 pmid:26682144 pmcid:PMC4671975 fatcat:pat53gvpafab7a3zoko465vq2a

Cardiovascular magnetic resonance imaging: Current and emerging applications

João A.C. Lima, Milind Y. Desai
2004 Journal of the American College of Cardiology  
Magnetic resonance (MR) imaging is gaining importance in cardiology as the newest, most complex, and rapidly emerging noninvasive test of choice for patients with a multitude of cardiovascular problems  ...  It has long been recognized to provide an accurate and reliable means of assessing the function and anatomy of the heart and great vessels, but its emerging role as one of the dominant imaging modalities  ...  ASSESSMENT OF DIFFERENT CARDIOMYOPATHIES Magnetic resonance imaging has a high degree of accuracy and reproducibility in the visualization of LV and right ventricular (RV) morphology and function (15)  ... 
doi:10.1016/j.jacc.2004.06.033 pmid:15364314 fatcat:upyahl2z5be3zoe237no2t5rkq

Recent advances in oncological imaging

K. S. El-Haddad, A. R. Padhani
2003 Clinical medicine (London)  
Multislice computed tomography is the most important advance in mainstream oncological imaging Improved contrast mechanisms in magnetic resonance imaging (MRI) provide the ability to visualise function  ...  of cancer Key Points KEY WORDS: contrast medium, dynamic magnetic resonance imaging, functional imaging, oncological imaging, positron emission tomography, spiral computed tomography, ultrasound  ...  Carcinoembryonic antigen and prostate specific membrane antigen for the diagnosis of Dynamic contrast-enhanced magnetic resonance imaging Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI  ... 
doi:10.7861/clinmedicine.3-4-318 pmid:12938744 fatcat:6tvb3c2ggndhrfh2jywopsltui

Assessment of myocardial viability by cardiovascular magnetic resonance imaging

H Mahrholdt
2002 European Heart Journal  
In the clinical setting, a number of techniques  ...  In such patients the definition of myocardial viability is directly related to that of myocardial infarction because infarction is defined as the loss of viability.  ...  Consequently, observation of the anatomy and function only of the left ventricle at rest by cardiovascular magnetic resonance may not be helpful in the detection of residual viability.  ... 
doi:10.1053/euhj.2001.3038 pmid:11969275 fatcat:q4ynt6k2xfekbmjqvclmcc4twi

Progresses of Functional Magnetic Resonance Imaging Diagnosis in Breast Cancer

Qianfei Hu, Sibin Liu
2020 Yangtze Medicine  
At present, with the continuous advancement of magnetic resonance technology, Magnetic resonance spectroscopy (MRS), Perfusion weighted imaging (PWI), Positron emission tomography-magnetic resonance imaging  ...  Breast cancer is the most common malignant tumor that threatens women's health. Breast magnetic resonance imaging (MRI) is a commonly used method recommended for the diagnosis of breast cancer.  ...  Conflicts of Interest The authors declare no conflicts of interest regarding the publication of this paper.  ... 
doi:10.4236/ym.2019.42009 fatcat:f3mqa6lz4zg3lfqo75p75vkv74

Diffusion-weighted magnetic resonance imaging in management of bladder cancer, particularly with multimodal bladder-sparing strategy

Soichiro Yoshida
2014 World Journal of Radiology  
Core tip: Diffusion-weighted magnetic resonance imaging (DW-MRI) is a functional imaging increasingly applied in the management of bladder cancer.  ...  Diffusion-weighted magnetic resonance imaging (DW-MRI) is a functional imaging technique increasingly applied to various types of cancers.  ...  Diffusion-weighted magnetic resonance imaging (DW-MRI) is a functional imaging technique increasingly applied to various types of cancer.  ... 
doi:10.4329/wjr.v6.i6.344 pmid:24976935 pmcid:PMC4072819 fatcat:pfaqlxhzdvco5igobshop4g7la

Cardiac magnetic resonance in clinical cardiology

Andreas Kumar
2015 World Journal of Cardiology  
Over the last decades, cardiac magnetic resonance (CMR) has transformed from a research tool to a widely used diagnostic method in clinical cardiology.  ...  Advantages of CMR, compared to other imaging methods, include very high resolution imaging with a spatial resolution up to 0.5 mm × 0.5 mm in plane, a large array of different imaging sequences to provide  ...  Accuracy of contrast-enhanced magnetic resonance imaging in predicting improvement of regional myocardial function in patients after acute myocardial infarction.  ... 
doi:10.4330/wjc.v7.i1.6 pmid:25632313 pmcid:PMC4306206 fatcat:sbhdoncpozdn5bhssjmdwsakte

Ressonância magnética de pulmão: um novo passo no estudo das doenças pulmonares

Bruno Hochhegger, Edson Marchiori, Klaus Irion, Arthur Soares Souza Jr, Jackson Volkart, Adalberto S Rubin
2012 Jornal Brasileiro de Pneumologia  
Introduction Magnetic resonance imaging (MRI) of the lung was first attempted in the 1980s. (1) In the following years, efforts were made to improve its performance and quality.  ...  In b, T2-weighted magnetic resonance image at the same level showing a high-intensity signal in the lesion.  ... 
doi:10.1590/s1806-37132012000100015 pmid:22407047 fatcat:yxooqxgh4behlkwpai63fuquxu

Non-invasive imaging in the diagnosis of acute viral myocarditis

Michael Jeserich, Stavros Konstantinides, Gabor Pavlik, Christoph Bode, Annette Geibel
2009 Clinical Research in Cardiology  
Thus, cardiovascular magnetic resonance imaging has emerged as the most important imaging tool in the diagnostic procedure and the review focus on this field.  ...  Thus, a non-invasive diagnostic approach without radiation and online image availability has been awaited. Cardiac magnetic resonance imaging has these promising characteristics.  ...  Acknowledgments We thank Thea Hunisch for the reading of the draft of the paper and Petra Nuß for typing parts of the manuscript. There is no financial support to this study. There are no grants.  ... 
doi:10.1007/s00392-009-0069-2 pmid:19756815 pmcid:PMC2789929 fatcat:rufknbkggjdnzfqfv3chthghxi
« Previous Showing results 1 — 15 out of 92,225 results