نتایج جستجو برای: grading glioma mri

تعداد نتایج: 161807  

Journal: :IEEE Access 2022

Identification of brain tumors and accurate grading at an early stage are crucial in cancer diagnosis, as a timely diagnosis can increase the chances survival. Considering challenges risks tumor biopsies, noninvasive imaging procedures such Magnetic Resonance Imaging (MRI) extensively used analyzing tumors. Recent advances field medical with deep learning using three dimensional (3D) MRI is aid...

Journal: :Neuro-oncology 2015
Norbert Galldiks Gabriele Stoffels Christian Filss Marion Rapp Tobias Blau Caroline Tscherpel Garry Ceccon Veronika Dunkl Martin Weinzierl Michael Stoffel Michael Sabel Gereon R Fink Nadim J Shah Karl-Josef Langen

BACKGROUND We evaluated the diagnostic value of static and dynamic O-(2-[(18)F]fluoroethyl)-L-tyrosine ((18)F-FET) PET parameters in patients with progressive or recurrent glioma. METHODS We retrospectively analyzed 132 dynamic (18)F-FET PET and conventional MRI scans of 124 glioma patients (primary World Health Organization grade II, n = 55; grade III, n = 19; grade IV, n = 50; mean age, 52 ...

Journal: :The Journal of bone and joint surgery. American volume 2012
Lindley B Wall Sharlene A Teefey William D Middleton Nirvikar Dahiya Karen Steger-May H Mike Kim Daniel Wessell Ken Yamaguchi

BACKGROUND Diagnostic evaluation of rotator cuff muscle quality is important to determine indications for potential operative repair. Ultrasonography has developed into an accepted and useful tool for evaluating rotator cuff tendon tears; however, its use for evaluating rotator muscle quality has not been well established. The purpose of this study was to investigate the diagnostic performance ...

2014
Tina Sehm Zheng Fan Ruth Weiss Marc Schwarz Tobias Engelhorn Nirjhar Hore Arnd Doerfler Michael Buchfelder IIker Y Eyüpoglu Nic E Savaskan

Poor prognosis and limited therapeutic options render malignant brain tumors one of the most devastating diseases in clinical medicine. Current treatment strategies attempt to expand the therapeutic repertoire through the use of multimodal treatment regimens. It is here that dietary fibers have been recently recognized as a supportive natural therapy in augmenting the body's response to tumor g...

2006
V. D. Schepkin

Introduction In-vivo MRI biomarkers are crucial for drug development and tailoring individualized therapy. Sodium MRI and proton diffusion (ADC mapping) show strong potentials for evaluating changes inside tumors. In this study, for the first time, high resolution sodium MRI with voxel size less than 1 μL was applied for assessment of tumor therapy using a rodent glioma model. The goal was to m...

2016
Shigeru Yamaguchi Kenji Hirata Takuya Toyonaga Kentaro Kobayashi Yukitomo Ishi Hiroaki Motegi Hiroyuki Kobayashi Tohru Shiga Nagara Tamaki Shunsuke Terasaka Kiyohiro Houkin

BACKGROUND Bevacizumab (BEV), a humanized monoclonal antibody, become a currently important chemotherapeutic option for the patients with recurrent glioma. The aim of this retrospective study is to investigate whether 18F-Fluoromisonidazole (FMISO) PET have the potential to detect BEV-resistant gliomas in the early-stage. METHODS We reviewed the FMISO PET and MRI appearances before and 3 to 4...

Introduction: Automatic arterial input function (AIF) selection has an essential role in quantification of cerebral perfusion parameters. The purpose of this study is to develop an optimal automatic method for AIF determination in dynamic susceptibility contrast magnetic resonance imaging (DSC-MRI) of glioma brain tumors by using a new preprocessing method.Material and Methods: For this study, ...

Journal: :Brain : a journal of neurology 2005
Dirk Pauleit Frank Floeth Kurt Hamacher Markus J Riemenschneider Guido Reifenberger Hans-Wilhelm Müller Karl Zilles Heinz H Coenen Karl-Josef Langen

MRI is commonly used to determine the location and extent of cerebral gliomas. We investigated whether the diagnostic accuracy of MRI could be improved by the additional use of PET with the amino acid O-(2-[18F]fluoroethyl)-l-tyrosine (FET). In a prospective study, PET with FET and MRI was performed in 31 patients with suspected cerebral gliomas. PET and MRIs were co-registered and 52 neuronavi...

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