Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Aug 2006
Estimate of vascular permeability and cerebral blood volume using Gd-DTPA contrast enhancement and dynamic T2*-weighted MRI.
To develop a numerical approach for estimation of vascular permeability from dynamic T2*-weighted imaging, a technique routinely used to measure cerebral blood volume (CBV) and flow in gliomas. ⋯ Using a single imaging acquisition, the three most important vascular properties, CBV, cerebral blood flow (CBF), and permeability, can be estimated. This approach may have potential in clinical evaluation of patients with brain tumor or acute ischemic stroke.
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J Magn Reson Imaging · Aug 2006
Quantitative diffusion imaging in breast cancer: a clinical prospective study.
To study the correlation between apparent diffusion coefficient (ADC) and pathology in patients with undefined breast lesion, to validate how accurately ADC is related to histology, and to define a threshold value of ADC to distinguish malignant from benign lesions. ⋯ The ADC may help to differentiate benign and malignant lesions with good specificity, and may increase the overall specificity of breast MRI.
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J Magn Reson Imaging · Aug 2006
High-resolution imaging of the intracranial arterial and venous systems following a single contrast injection.
To generate two separate three-dimensional (3D) high spatial resolution images of the intracranial arterial and venous systems using a single contrast injection. ⋯ This technique provides images with high spatial resolution for both arterial and venous intracranial systems using a single contrast injection.
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J Magn Reson Imaging · Aug 2006
Diffusion tensor imaging in evaluation of human skeletal muscle injury.
To explore the capability and reliability of diffusion tensor magnetic resonance imaging (DTI) in the evaluation of human skeletal muscle injury. ⋯ DTI is a suitable method to assess human calf muscle injury.
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J Magn Reson Imaging · Aug 2006
Dynamic pulmonary perfusion and flow quantification with MR imaging, 3.0T vs. 1.5T: initial results.
To prospectively evaluate the technical feasibility and relative performance of pulmonary time-resolved MR angiography (MRA) and pulmonary artery (PA) flow quantification at 3.0T vs. 1.5T. ⋯ Time-resolved pulmonary MRA, perfusion, and flow quantification at 3.0T was feasible, with comparable results to 1.5T. The lower parenchymal enhancement at 3.0T is believed to reflect increased susceptibility effects at higher magnetic fields. Further work is needed to fully exploit the potential of pulmonary perfusion imaging at 3.0T and to address the current limitations.