نتایج جستجو برای: diffusion weighted imaging mri

تعداد نتایج: 727161  

2017
Martin H. Maurer Johannes T. Heverhagen

This review article aims to provide an overview on the principles of diffusion-weighted magnetic resonance imaging (DW-MRI) and its applications in the imaging of the prostate. DW-MRI with regards to different applications for prostate cancer (PCa) detection and characterization, local staging as well as for active surveillance (AS) and tumor recurrence after radical prostatectomy (RP) will be ...

2011
Tsutomu Tamada Teruki Sone Yoshiyuki Miyaji Yuji Kozuka Katsuyoshi Ito

Prostatic stromal sarcoma (PSS) is quite rare. Herein, we describe magnetic resonance imaging (MRI) features of a PSS identified in a 26-year-old man with dysuria and hematuria. MRI clearly depicted the extent and multinodular appearance of the tumor, which was mainly located in the central zone of the prostate. The tumor appeared as a heterogeneously signal-hyperintense mass with a pseudocapsu...

2010
G. Petralia H.C. Thoeny

Diffusion-weighted magnetic resonance imaging (DW-MRI) appears to hold promise as a non-invasive imaging modality in the detection of early microstructural and functional changes of different organs. DW-MRI is an imaging technique with a high sensitivity for the detection of a large variety of diseases in the urogenital tract. In kidneys, DW-MRI has shown promise for the characterization of sol...

Journal: :iranian journal of radiology 0
eun kyung park department of radiology, anam hospital, korea university college of medicine, seoul, korea kyu ran cho department of radiology, anam hospital, korea university college of medicine, seoul, korea; department of radiology, korea university college of medicine 73, inchon-ro, seongbuk-gu, seoul 02841, korea. tel: +82-29205578, fax: +82-29293796 bo kyoung seo department of radiology, ansan hospital, korea university college of medicine, gyeonggi-do, korea ok hee woo department of radiology, guro hospital, korea university college of medicine, seoul, korea sung bum cho department of radiology, anam hospital, korea university college of medicine, seoul, korea jeoung won bae department of surgery, anam hospital, korea university college of medicine, seoul, korea

results a low adc value was associated with lymph node metastasis (p < 0.01) and with high ki-67 protein levels (p = 0.03). there were no significant differences in the adc values among the histological grade (p = 0.48), molecular subtype (p = 0.51), tumor size (p = 0.46), and p53 protein level (p = 0.62). conclusion the pre-operative use of the 3.0 tesla dwi could provide information about the...

Journal: :JBR-BTR : organe de la Societe royale belge de radiologie (SRBR) = orgaan van de Koninklijke Belgische Vereniging voor Radiologie 2014
F Gelal L Karakaş A Sarsilmaz K Yücel C Dündar M Apaydin

Brain capillary telangiectasia is an incidental vascular malformation found usually in pons and sometimes in extra- pontine sites. Typical MRI features are enhancement on post contrast T1 weighted images and signal loss on gradient echo images. We evaluated 10 patients with various MR techniques. Susceptibility weighted imaging was superior to GRE T2 in showing decreased signal due to susceptib...

2014
Inga Katharina Koerte Marc Muehlmann

AD Axial diffusivity ADC Apparent diffusion coefficient ADHD Attention deficit hyperactivity disorder BET Brain extraction tool CSF Cerebrospinal fluid DKI Diffusion kurtosis imaging DTI Diffusion tensor imaging DWI Diffusion-weighted imaging FA Fractional anisotropy MD Trace, mean diffusivity MRI Magnetic resonance imaging RD Radial diffusivity ROI Region of interest TBSS Tract-based spatial s...

2014
Anil Bhavsar Sadhna Verma

The important role of magnetic resonance imaging (MRI) in the anatomic evaluation, detection, and staging of prostate cancer is well established. This paper focuses on the pertinent embryologic, anatomic, and imaging facts regarding both the normal prostate and the several examples of prostate cancers as well as staging implications. The discussion primarily includes findings related to T2-weig...

2014
Sandeep Sankineni Murat Osman Peter L Choyke

Multiparametric magnetic resonance imaging (MP-MRI) has emerged as a promising method for the detection of prostate cancer. The functional MRI components of the MP-MRI consist of the diffusion weighted MRI, dynamic contrast enhanced MRI, and magnetic resonance spectroscopic imaging. The purpose of this paper is to review the existing literature about the use of functional MRI in prostate cancer...

Journal: :Stroke 1999
C S Kidwell J R Alger F Di Salle S Starkman P Villablanca J Bentson J L Saver

BACKGROUND AND PURPOSE Diffusion MRI has established value in patients with ischemic stroke but has not been systematically investigated in patients with transient ischemic attack (TIA). METHODS Clinical, conventional MRI, and diffusion MRI data were collected on 42 consecutive patients with symptoms of cerebral TIA. TIA imaging data were compared with those from a contemporaneous group of 23...

Journal: :Neurology India 2009
Monica Saini Ken Butcher

Worldwide, non-contrast computed tomography (NCCT) has been the imaging modality of choice in acute stroke, primarily due to its accessibility and short acquisition time. However, magnetic resonance imaging (MRI), specifically diffusion-weighted imaging (DWI), is much more sensitive to hyperacute ischemic changes. Multimodal MRI studies provide significantly more pathophysiological and prognost...

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