نتایج جستجو برای: grading glioma mri

تعداد نتایج: 161807  

2017
Ming Zhao Li-Li Guo Ning Huang Qiong Wu Li Zhou Hui Zhao Jing Zhang Kuang Fu

The objective of the present study was to quantitatively analyze the permeability of tumor entity and peritumor edema in glioma grading, using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). In the present retrospective study, 80 patients underwent T1-weighted DCE-MRI examination at 3.0 T and the pathological results (including astrocytoma and oligodendroglioma) were obtained be...

2014
Deling Li Xiaobin Zhao Liwei Zhang Fang Li Nan Ji Zhixian Gao Jisheng Wang Peng Kang Zhaofei Liu Jiyun Shi Xiaoyuan Chen Zhaohui Zhu

Integrin αvβ3 is overexpressed in both neovasculature and glioma cells. We aimed to evaluate (68)gallium-BNOTA-PRGD2 ((68)Ga-PRGD2) as a new reagent for noninvasive integrin αvβ3 imaging in glioma patients. With informed consent, 12 patients with suspicious brain glioma, as diagnosed by enhanced magnetic resonance imaging (MRI) scanning, were enrolled to undergo (68)Ga-PRGD2 PET/CT and (18)F-FD...

2017
Omer Aydin Ramazan Buyukkaya Bahattin Hakyemez

BACKGROUND Susceptibility weighted imaging (SWI) is a velocity compensated, high-resolution three-dimensional (3D) spoiled gradient-echo sequence that uses magnitude and filtered-phase data. SWI seems to be a valuable tool for non-invasive evaluation of central nervous system gliomas. Relative cerebral blood volume (rCBV) ratio is one of the best noninvasive methods for glioma grading. Degree o...

Journal: :AJNR. American journal of neuroradiology 2016
H-Y Kang H-L Xiao J-H Chen Y Tan X Chen T Xie J-Q Fang S Wang Y Yang W-G Zhang

BACKGROUND AND PURPOSE Vascular proliferation is a major criterion for grading gliomas on the basis of histology. Relative cerebral blood volume can provide pathophysiologic information about glioma grading. Vessel size imaging, in some animals, can be used to estimate the microvascular caliber of a glioma, but its clinical use remains unclear. Herein, we aimed to compare the predictive power o...

2012
Pierre-Antoine Eliat Damien Olivié Stephan Saïkali Béatrice Carsin Hervé Saint-Jalmes Jacques D. de Certaines

An interesting approach has been proposed to differentiate malignant glioneuronal tumors (MGNTs) as a subclass of the WHO grade III and IV malignant gliomas. MGNT histologically resemble any WHO grade III or IV glioma but have a different biological behavior, presenting a survival twice longer as WHO glioblastomas and a lower occurrence of metastases. However, neurofilament protein immunostaini...

Journal: :International journal of cancer management 2022

Background: Artificial intelligence (AI) models provide advanced applications to many scientific areas, including the prediction of pathologic grade tumors, utilizing radiology techniques. Gliomas are among malignant brain tumors in human adults, and their efficient diagnosis is high clinical significance. Objectives: Given contribution AI medical diagnoses, we investigated role deep learning d...

Journal: :iranian journal of radiology 0
mahsa raisi-nafchi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran fariborz faeghi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran; department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran alireza zali department of neurosurgery, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran hamidreza haghighatkhah department of radiology, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran jalal jalal-shokouhi jam-e-jam medical imaging center, tehran, iran

background diffusion-weighted imaging (dwi) is a form of magnetic resonance imaging (mri) based on measuring the random brownian motion of water molecules within the biological tissues and is particularly useful in tumor characterization. objectives the purpose of this study was to evaluate the diagnostic value of dw mri and the apparent diffusion coefficient (adc) for preoperative grading of a...

Journal: :Journal of Clinical Neuroscience 2021

Abstract Glioma is the most common primary intraparenchymal tumor of brain and 5-year survival rate high-grade glioma poor. Magnetic resonance imaging (MRI) essential for detecting, characterizing monitoring tumors but definitive diagnosis still relies on surgical pathology. Machine learning has been applied to analysis MRI data in research potential change clinical practice improve patient out...

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