نتایج جستجو برای: dwi

تعداد نتایج: 3434  

2017
Oğuzhan Özdemir Yavuz Metin Filiz Taşçı Nurgül Orhan Metin Özlem Bilir Özcan Yavaşi Ali Küpeli Recep Tayyip Erdoğan

Objective: When performing a Non-Enhanced Computed Tomography (NECT) scan, the efficacy generally reduces, and an additional CECT may become inevitable for final diagnosis. This prospective study aims to determine the added value of Diffusion Weighted Imaging (DWI) when combined to NECT in the diagnosis of acute abdominopelvic pain (acute abdomen) and the diagnostic efficacy of combined imaging...

2017
Sang Hun Lee Hyun Wook Nah Bum Joon Kim Sung Ho Ahn Jong S. Kim Dong Wha Kang Sun U. Kwon

BACKGROUND AND PURPOSE The absence of acute ischemic lesions in diffusion-weighted imaging (DWI) in transient ischemic attack (TIA) patients makes it difficult to diagnose the true vascular etiologies. Among patients with DWI-negative TIA, we investigated whether the presence of a perfusion-weighted imaging (PWI) abnormality implied a true vascular event by identifying new acute ischemic lesion...

Journal: :Journal of magnetic resonance imaging : JMRI 2018
Chang Woo Chun Joon-Yong Jung Jun Seung Baik Won-Hee Jee Sun Ki Kim Seung Han Shin

PURPOSE To compare the diagnostic performances of diffusion-weighted imaging (DWI)-combined magnetic resonance imaging (MRI) performed without intravenous contrast material with gadolinium contrast material-enhanced (CE) MRI for diagnosing soft-tissue abscesses. MATERIALS AND METHODS In all, 119 patients (mean age: 56 years) with skin and soft-tissue infection who underwent contrast-enhanced ...

Journal: :Stroke 2015
Marc D Gilgen Dariusz Klimek Kai T Liesirova Julia Meisterernst Pascal P Klinger-Gratz Gerhard Schroth Pasquale Mordasini Kety Hsieh Johannes Slotboom Mirjam R Heldner Anne Broeg-Morvay Marie-Luise Mono Urs Fischer Heinrich P Mattle Marcel Arnold Jan Gralla Marwan El-Koussy Simon Jung

BACKGROUND AND PURPOSE Lesion volume on diffusion-weighted magnetic resonance imaging (DWI) before acute stroke therapy is a predictor of outcome. Therefore, patients with large volumes are often excluded from therapy. The aim of this study was to analyze the impact of endovascular treatment in patients with large DWI lesion volumes (>70 mL). METHODS Three hundred seventy-two patients with mi...

Journal: :AJNR. American journal of neuroradiology 2000
M Augustin R Bammer J Simbrunner R Stollberger H P Hartung F Fazekas

BACKGROUND AND PURPOSE The importance of diffusion-weighted imaging (DWI) for delineating acute ischemic lesions has been investigated extensively; however, few studies have investigated the role of DWI in the subacute stage of stroke. Because these lesions tend to appear bright throughout the first days of ischemia, owing to restricted diffusion, we speculated that DWI could also improve the d...

2013
Katsumi Shigemura Nozomu Yamanaka Masuo Yamashita

PURPOSE To determine the relationship between cancer-positive findings on diffusion-weighted imaging (DWI) magnetic resonance imaging (MRI) and the Gleason score (GS) of radical prostatectomy specimens in prostate cancer (PC). MATERIALS AND METHODS We performed a retrospective study of 105 consecutive patients with PC who underwent radical prostatectomy between January 2009 and October 2011 w...

Journal: :Interaksi: Jurnal Ilmu Komunikasi 2018

Journal: :AJNR. American journal of neuroradiology 2006
K Benameur J L Bykowski M Luby S Warach L L Latour

Ischemic lesion conspicuity on routine diffusion-weighted imaging (DWI, 30 seconds) was compared with an improved sequence (high-resolution DWI [DWI-HR], 256 seconds) having increased spatial resolution and signal to noise and decreased eddy current artifact in 42 patients with acute ischemic stroke. Total lesion volumes were similar; however, twice as many lesions were identified on DWI-HR, pr...

2017
Mingxu Luo Hongmei Song Gang Liu Yikai Lin Lintao Luo Xin Zhou Bo Chen

The diagnostic values of diffusion weighted imaging (DWI) and 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) for N-staging of gastric cancer (GC) were identified and compared. After a systematic search to identify relevant articles, meta-analysis was used to summarize the sensitivities, specificities, and areas under curves (AUCs) for DWI and PET/CT. To...

2016
Duygu Herek Nevzat Karabulut Ali Kocyıgıt Ahmet Baki Yagcı

BACKGROUND Our aim was to compare the apparent diffusion coefficient (ADC) values of normal abdominal parenchymal organs and signal-to-noise ratio (SNR) measurements in the same patients with breath hold (BH) and free breathing (FB) diffusion weighted imaging (DWI). MATERIAL/METHODS Forty-eight patients underwent both BH and FB DWI. Spherical region of interest (ROI) was placed on the right h...

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