نتایج جستجو برای: adc map
تعداد نتایج: 201565 فیلتر نتایج به سال:
Diffusion-weighted magnetic resonance imaging (DW-MRI) is a novel imaging technique that reflects microscopic water diffusion using a pair of strong diffusion gradients. It was developed to map the apparent diffusion coefficient (ADC) (1). Parallel to the development of DW-MRI, there have been advances in Dynamic contrast-enhanced MRI (DCEMRI). Using the MRI signal and pharmacokinetic models, p...
Intramedullary spinal cord abscess (ISCA) is a rare infection of the central nervous system. We describe the magnetic resonance imaging (MRI) findings, including the diffusion-weighted imaging (DWI) findings, of ISCA in a 78-year-old man. The initial conventional MRI of the thoracic spine demonstrated a subtle enhancing nodule accompanied by significant edema. On the follow-up MRI after seven d...
A new high-resolution and high-speed fully differential Successive Approximation Register (SAR) Analog to Digital Converter (ADC) based on Capacitor Merged Technique is presented in this paper. The main purposes of the proposed idea are to achieve high-resolution and high-speed SAR ADC simultaneously as well. It is noteworthy that, exerting the suggested method the total capacitance and the rat...
Figure 2 ADC map at 8h (a), T2WI image at 24h (c) of one mouse and MR spectra at 8 (c) and 24h (d). The spectra (SPECIAL, TE/TR=2.8/4000ms, NT=360) (5) was acquired from abnormal ADC region (yellow square, 1.4×1.2×1.6mm) at 8h (b) and T2-hyper-intensive regions (red square, 1.4×1.2×1.6mm) at 24h (d), and displayed with Gaussian adoptization (gf=0.15s). Diffusion tensor echo planar imaging of mo...
(a) is one loop of acquired fetal Diffusion transverse data viewed in Transverse, Coronal and Sagittal planes with 2 mm×2 mm in plane resolution, 4mm slice thickness and -2mm gap. (b)-(d) are corresponding reconstructed b0 image, ADC map and FA map respectively with 2 mm×2 mm in plane resolution, and 4mm through slice resolution. (e) is reconstructed anatomical data from a 4-loop of ssTSE dynam...
Methods In this retrospective study, 22 patients (15 M: 7F ; mean age =65) with CRLM were evaluated with gadoxetic acid enhanced MRI before and after chemotherapy. Regions of interest were drawn encompassing metastases on T1W images and ADC map by an expert radiologist to record their average signal intensities (SI) normalised to the SI of paravertebral muscle and the average ADC value. We comp...
Previous findings have demonstrated the diagnostic usefulness of diffusion-weighted imaging in depicting specific features of a brain abscess. We report a case of a cerebral abscess, which ruptured into the ventricular system, including its findings on both diffusion-weighted images and apparent diffusion coefficient (ADC) maps. Purulent material within the left lateral ventricle, similar to th...
BACKGROUND AND AIMS To assess the role of diffusion weighted imaging sequence (DWI), routinely used in hepatic magnetic resonance imaging (MRI) for the differentiation of focal liver lesions (FLLs) as benign or malignant. METHOD 99 FLLs assessed by liver MRI in 80 patients were included in the present study. All lesions were retrospectively analyzed by two experienced radiologists, independen...
This paper reports on results of a multisite collaborative project launched by the MRI subgroup of Quantitative Imaging Network to assess current capability and provide future guidelines for generating a standard parametric diffusion map Digital Imaging and Communication in Medicine (DICOM) in clinical trials that utilize quantitative diffusion-weighted imaging (DWI). Participating sites used a...
OBJECTIVE: To study the utility of diffusion-weighted magnetic resonance imaging in the differentiation between benign and malignant breast lesions. MATERIALS AND METHODS: Forty-five women (mean age, 46.1 years) with 52 focal breast lesions underwent diffusion-weighted magnetic resonance imaging. The calculation of apparent diffusion coefficient (ADC) was based on the ADC map reflecting five b ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید