نتایج جستجو برای: biomedical mri

تعداد نتایج: 165212  

Journal: :Bulletin of Electrical Engineering and Informatics 2021

Magnetic Resonance Images (MRI) of the Brain is a significant tool to diagnosis Alzheimer's disease due its ability measure regional changes in brain that reflect progression detect early stages disease. In this paper, we propose new model adopts Bat for parameter optimization problem Support vector machine (SVM) diagnose Alzheimer’s via MRI biomedical image. The proposed uses image classificat...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2008
Satish Viswanath B. Nicolas Bloch Elizabeth Genega Neil Rofsky Robert E. Lenkinski Jonathan Chappelow Robert Toth Anant Madabhushi

Recently, high resolution 3 Tesla (T) Dynamic Contrast-Enhanced MRI (DCE-MRI) of the prostate has emerged as a promising modality for detecting prostate cancer (CaP). Computer-aided diagnosis (CAD) schemes for DCE-MRI data have thus far been primarily developed for breast cancer and typically involve model fitting of dynamic intensity changes as a function of contrast agent uptake by the lesion...

Journal: :Journal of advanced scientific research 2022

This review article presents an overview of the role magnetic nanoparticles (MNPs) in various biomedical applications. Various synthesis techniques have been discussed compliance with their suitability biological Utilizing property nanoparticles, several technology applications developed such as resonance imaging (MRI), separation biomolecules, biosensing, bacteria inhibition, field stimulated ...

2016
Shuzhen Chen Jun Zhang Shengwei Jiang Gan Lin Bing Luo Huan Yao Yuchun Lin Chengyong He Gang Liu Zhongning Lin

Superparamagnetic iron oxide (SPIO) nanoparticles have been widely used in a variety of biomedical applications, especially as contrast agents for magnetic resonance imaging (MRI) and cell labeling. In this study, SPIO nanoparticles were stabilized with amphiphilic low molecular weight polyethylenimine (PEI) in an aqueous phase to form monodispersed nanocomposites with a controlled clustering s...

2008
L. H. Bennett P. S. Wang M. J. Donahue

Metallic biomedical implants, such as aneurysm clips, endoprostheses, and internal orthopedic devices give rise to artifacts in the magnetic resonance image (MRI) of patients. Such artifacts impair the information contained in the image in precisely the region of most interest, namely near the metallic device. Ferromagnetic materials are contraindicated because of the hazards associated with th...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2016
Ravi Vij Kathryn J Fowler Monica Shokeen

Molecular imaging plays an important role in detection and staging of hematologic malignancies. Multiple myeloma (MM) is an age-related hematologic malignancy of clonal bone marrow plasma cells characterized by destructive bone lesions and is fatal in most patients. Traditional skeletal survey and bone scans have sensitivity limitations for osteolytic lesions manifested in MM. Progressive biome...

Journal: :Nanoscale 2013
Giuseppe Lamanna Antonio Garofalo Gabriela Popa Claire Wilhelm Sylvie Bégin-Colin Delphine Felder-Flesch Alberto Bianco Florence Gazeau Cécilia Ménard-Moyon

Coating of carbon nanotubes (CNTs) with magnetic nanoparticles (NPs) imparts novel magnetic, optical, and thermal properties with potential applications in the biomedical domain. Multi-walled CNTs have been decorated with iron oxide superparamagnetic NPs. Two different approaches have been investigated based on ligand exchange or "click chemistry". The presence of the NPs on the nanotube surfac...

2013
Wenlong Xu Badrul Alam Bony Cho Rong Kim Jong Su Baeck Yongmin Chang Ji Eun Bae Kwon Seok Chae Tae Jeong Kim Gang Ho Lee

There is no doubt that the molecular imaging is an extremely important technique in diagnosing diseases. Dual imaging is emerging as a step forward in molecular imaging technique because it can provide us with more information useful for diagnosing diseases than single imaging. Therefore, diverse dual imaging modalities should be developed. Molecular imaging generally relies on imaging agents. ...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2010
Franz Schilling Leif Schröder Krishnan K Palaniappan Sina Zapf David E Wemmer Alexander Pines

A new approach to MRI thermometry using encapsulated hyperpolarized xenon is demonstrated. The method is based on the temperature dependent chemical shift of hyperpolarized xenon in a cryptophane-A cage. This shift is linear with a slope of 0.29 ppm °C(-1) which is perceptibly higher than the shift of the proton resonance frequency of water (ca. 0.01 ppm °C(-1)) that is currently used for MRI t...

2008
M. C. Cassidy J. W. Aptekar A. C. Johnson R. A. Barton M. Lee C. Vo A. L. Hill R. W. Mair M. S. Rosen R. L. Walsworth C. M. Marcus

Introduction The use of nanoparticles for biomedical applications has benefited from rapid progress both in the nanoscale synthesis of materials with specific optical [1] and magnetic properties [2], and in the biofunctionalization of surfaces, allowing targeting in-vivo tracking, and therapeutic action [3]. For magnetic resonance imaging (MRI), superparamagnetic nanoparticles [2] have extended...

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