نتایج جستجو برای: dynamic contrast enhanced magnetic resonance imaging

تعداد نتایج: 1723855  

Journal: :iranian journal of radiology 0
nagihan inan department of radiology, school of medicine, university of kocaeli, kocaeli, turkey; department of radiology, school of medicine, university of kocaeli, kocaeli, turkey. tel: +90-2623037242, fax: +90-2623038003 arzu arslan department of radiology, school of medicine, university of kocaeli, kocaeli, turkey muhammed donmez department of radiology, school of medicine, university of kocaeli, kocaeli, turkey hasan tahsin sarisoy department of radiology, school of medicine, university of kocaeli, kocaeli, turkey

background imaging plays a critical role not only in the detection, but also in the characterization of lung masses as benign or malignant. objectives to determine the diagnostic accuracy of dynamic magnetic resonance imaging (mri) in the differential diagnosis of benign and malignant lung masses. patients and methods ninety-four masses were included in this prospective study. five dynamic seri...

Journal: :journal of medical signals and sensors 0

in this paper, we propose and investigate distribution of intravascular and extravascular extracellular volume fractions (dieef) as a noninvasive biomarker for neovascularization assessment by dynamic contrast‑enhanced magnetic resonance imaging (dce‑mri). a generalized two‑compartment exchange model (g2cxm) that uniformly includes the patlak model, tofts model, extended tofts model, and recent...

Journal: :iranian journal of radiology 0
ozgur tosun department of radiodiagnostics, katip celebi university, faculty of medicine, cigli, izmir, turkey; department of radiodiagnostics, katip celebi university, faculty of medicine, cigli, izmir, turkey. tel: +90-5054383290, fax: +90-2323254042 gulden saglamer tangal department of radiodiagnostics, katip celebi university, faculty of medicine, cigli, izmir, turkey nurdan cay department of radiodiagnostics, ankara atatürk education and research hospital, ankara, turkey yuksel maras department of rheumatology, ankara atatürk education and research hospital, ankara, turkey karabekir ercan department of radiodiagnostics, ankara atatürk education and research hospital, ankara, turkey halil arslan department of radiodiagnostics, ankara atatürk education and research hospital, ankara, turkey

conclusion fs t2 w and ce fs t1 w sequences of axial planes were the most useful sequences in determination of active sacroiliitis. therefore, in patients with renal failure or allergy to contrast media, fs t2 wi can be obtained to detect active sacroiliitis. objectives the aim of this retrospective study was to assess the value of different magnetic resonance imaging (mri) sequences in evaluat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی و مهندسی 1390

magnetic resonance imaging (mri) is a notable medical imaging technique that makes of phenomenon of nuclear magnetic resonance. because of the resolution and the technology being harmless, mri has considered as the most desirable imaging technique in clinical applications. the visual quality of mri plays an important role in accuracy of medical delineations that can be seriously degraded by exi...

Journal: :Bio-medical materials and engineering 2015
Liang Hu Zhaoning Cheng Manning Wang Zhijian Song

Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) is widely used for breast lesion differentiation. Manual segmentation in DCE-MRI is difficult and open to viewer interpretation. In this paper, an automatic segmentation method based on image manifold revealing was introduced to overcome the problems of the currently used method. First, high dimensional datasets were constructed fro...

Background & Aims: In recent years, iron oxide nanoparticles have been used in contrast-enhanced magnetic resonance imaging for diagnosing a wide range of diseases. In order to provide biocompatibility and prevent the toxicity of the nanoparticles, using organic or inorganic coating around these nanoparticles is important for their application. The aim of this study is to investigate the effect...

Journal: :iranian journal of radiology 0
seung hee han department of radiology, seoul st. mary’s hospital, college of medicine, the catholic university of korea, seoul, south korea yeong yi an department of radiology, st. vincent’s hospital, college of medicine, the catholic university of korea, seoul, south korea; department of radiology, st. vincent’s hospital, college of medicine, the catholic university of korea, seoul, south korea. tel: +82-312498495, fax: +82-312475713 bong joo kang department of radiology, seoul st. mary’s hospital, college of medicine, the catholic university of korea, seoul, south korea sung hun kim department of radiology, seoul st. mary’s hospital, college of medicine, the catholic university of korea, seoul, south korea eun jae lee department of radiology, seoul st. mary’s hospital, college of medicine, the catholic university of korea, seoul, south korea

background dynamic contrast-enhanced magnetic resonance imaging (dce - mri) has been widely used in the management of breast cancer, and its diagnostic value in breast imaging has been demonstrated. there have only been a few reports regarding the usefulness of pre-contrast imaging. knowledge about clinically significant findings of preoperative, pre-contrast t1 and t2 mr images will allow more...

Journal: :Physics in medicine and biology 2001
K Murase Y Yamazaki M Shinohara K Kawakami K Kikuchi H Miki T Mochizuki J Ikezoe

The purpose of this study was to present an application of a novel denoising technique for improving the accuracy of cerebral blood flow (CBF) images generated from dynamic susceptibility contrast-enhanced magnetic resonance imaging (DSC-MRI). The method presented in this study was based on anisotropic diffusion (AD). The usefulness of this method was firstly investigated using computer simulat...

Journal: :Diagnostic and interventional radiology 2010
Bariş Türkbey David Thomasson Yuxi Pang Marcelino Bernardo Peter L Choyke

Angiogenesis is a key step in the pathophysiology of tumor growth and metastatic spread. Recently, dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) has emerged as a method for assessing angiogenesis both during the initial diagnosis and for follow up of anti-angiogenic therapies. In this review, we discuss the technical aspects of implementing DCE-MRI in clinical practice with emp...

Journal: :Methods of information in medicine 2016
M Feilke B Bischl V J Schmid J Gertheiss

BACKGROUND For the statistical analysis of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) data, compartment models are a commonly used tool. By these models, the observed uptake of contrast agent in some tissue over time is linked to physiologic properties like capillary permeability and blood flow. Up to now, models of different complexity have been used, and it is still unclea...

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