BACKGROUND AND PURPOSE In neonatal arterial ischemic stroke, pre-Wallerian degeneration in descending corticospinal tracts (DCST) on diffusion MRI (DWI) predicts poor outcome. This signal has not been studied in older children. METHODS A consecutive arterial ischemic stroke cohort (1 month to 18 years) with acute DWI and >12 months of follow-up were enrolled (SickKids Children's Stroke Progra...

BACKGROUND AND PURPOSE The clinical significance of microembolic signals (MESs) detected by transcranial Doppler sonography (TCD) in acute ischemic stroke remains unclear. The purpose of the present study was to assess the findings of diffusion-weighted MR imaging (DWI) and other clinical characteristics in patients with acute ischemic stroke and MESs. METHODS We performed TCD and DWI within ...

BACKGROUND AND PURPOSE Cerebral hypoglycemia can result in reversible metabolic brain insults and can be associated with impaired diffusion disturbances. Our aim was to evaluate possible changes in DWI of the human brain during hyperacute short-term severe hypoglycemia. MATERIALS AND METHODS Ten individuals scheduled for a clinical IST were examined with DWI while the test was performed. Veno...

Even using diffusion-weighted images (DWI) detection of acute brainstem infarction (BI) is still a challenge. To evaluate the clinical efficacy of a DWI protocol with improved spatial resolution all images of 44 patients with clinically possible BI on admission (24 patients with definite BI and 20 patients with other etiologies) and first DWI within 24 h after symptom onset were blindly reanaly...

OBJECTIVE The aim of this study was to evaluate the diagnostic accuracy of echo-planar diffusion-weighted magnetic resonance imaging (EP-DWI) and high-resolution computed tomography (HRCT) in the detection and localization of cholesteatoma. MATERIALS AND METHODS Fifty-four patients were prospectively included in this study. Patients with suspected primary or residual cholesteatoma were evalua...

Diffusion-weighted magnetic resonance (MR) imaging (DWI) is increasingly applied to evaluate tumors in the abdomen and pelvis. However, DWI is susceptible to a variety of artifacts that arise from motion, use of strong gradient pulses, and echo-planar imaging technique. We discuss practical issues to help radiologists optimize the use of DWI to evaluate tumors in the body, including breath-hold...

(18)F-FDG PET is an established functional imaging modality for the evaluation of human disease. Diffusion-weighted MRI (DWI) is another rapidly evolving functional imaging modality that can be used to evaluate oncologic and nononcologic lesions throughout the body. The information provided by (18)F-FDG PET and DWI can be complementary, because the 2 methods are based on completely different bi...

Diffusion-weighted imaging (DWI) plays an emerging role for the assessment of focal and diffuse liver diseases. This growing interest is due to that fact that DWI is a noncontrast technique with inherent high contrast resolution, with promising results for detection and characterization of focal liver lesions. Recent advances in diffusion image quality have also added interest to this technique...

Dear Editor, With interest, we read the article by Pessoa Neto et al. about a 49-year-old male with COVID-19 in whom multiple T2- and diffusion-weighted imaging (DWI) hyperintense lesions were detected after 19 days on mechanical ventilation. The multilocal cerebral interpreted as demyelinating nature. study evokes some comments concerns. […] Multifocal T2-/DWI-hyperintense not necessarily impl...

We report 2 cases of primary breast cancer with swelling of the parasternal lymph nodes detected on diŠusion-weighted imaging (DWI) as small parasternal nodules. After neoadjuvant chemotherapy, DWI showed disappearance of one node but a focus of subtle signal hyperintensity in the other. DWI ˆndings correlated with the results of conventional breast contrast-enhanced magnetic resonance imaging ...