High B-value apparent diffusion-weighted images from CURVE-ball DTI
نویسندگان
چکیده
منابع مشابه
High b-value Acquisition using CURVE-ball DTI
Overview: The characteristics of water diffusion parallel and perpendicular to white matter tracts are a sensitive indicator of tissue microstructure and cannot be fully determined from single b-value DTI. In order to obtain singleor two-tensor DTI data with multiple b-values and acceptable SNR in clinically reasonable times, a new data acquisition strategy is proposed – CURVE-ball DTI (CUbe Ra...
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Background: Diffusion-weighted imaging (DWI) is a main component of multiparametric MRI for prostate cancer detection. Recently, high b value DWI has gained more attention because of its capability for tumor characterization. Objective: To assess based on histopathological findings of transrectal ultrasound (TRUS)-guided prostate biopsy as a reference, an...
متن کاملSignal to noise ratio of high b-value diffusion weighted images is improved using computed diffusion weighted imaging
acquired (+) and computed DWI imaging (x) where the acquisition time is kept the same for both. It is seen that noise remains constant across b-values for the conventionally acquired images whereas for cDWI it reduces with b-value as predicted by equation 1 (dotted curve). It is seen that for high b-values (>700 s mm) the SNR of cDWI is improved compared to conventional imaging. Figure 1. An ex...
متن کاملNormal white matter development from infancy to adulthood: comparing diffusion tensor and high b value diffusion weighted MR images.
PURPOSE To evaluate the sensitivity of high b value diffusion weight magnetic resonance imaging (DWI) in detecting normal white matter maturation, compare it to conventional diffusion tensor imaging (DTI), and to obtain normative quantitative data using this method. MATERIALS AND METHODS High b value DWI (b(max) = 6000 sec/mm(2)) using q-space analysis and conventional DTI (b = 1000 sec/mm(2)...
متن کاملHigh-b-value diffusion-weighted MR imaging of adult brain: image contrast and apparent diffusion coefficient map features.
BACKGROUND AND PURPOSE Recent improvements in MR gradient technology allow significant increases in diffusion weighting without prohibitive signal-to-noise degradation. The purpose of our investigation was to establish normative references for the signal intensity characteristics and apparent diffusion coefficient values of the adult brain at high b values. METHODS Fifty adults underwent diff...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2009
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.21808