European radiology
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To prospectively estimate the additional diagnostic value of ultrasound (US) re-evaluation for patients with equivocal computed tomography (CT) findings of acute appendicitis. ⋯ • Misdiagnosis of appendicitis still occurs, especially in patients with equivocal radiological findings. • The sensitivity and specificity of CT followed by US exceeded those of CT alone. • After US re-evaluation, the negative appendectomy rate decreased from 3.4 to 2.3 %. • US re-evaluation in equivocal cases helps diagnostic confidence and further management.
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To develop and assess a combined reading for contrast-enhanced magnetic resonance (CE-MRI) and diffusion weighted imaging (DWI) adapted to the BI-RADS for multiparametric MRI of the breast at 3 T. ⋯ Multiparametric 3-T MRI of the breast using a BI-RADS-adapted reading is fast, simple to use and significantly improves the diagnostic accuracy of breast MRI. KEYPOINTS : • Multiparametric breast 3-T MRI with BI-RADS-adapted reading improves diagnostic accuracy. • BI-RADS-adapted reading of CE-MRI and DWI is based on established reporting guidelines. • BI-RADS-adapted reading is fast and easy to use in routine clinical practice. • BI-RADS-adapted reading is robust to intra- and inter-reader variability.
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Susceptibility weighted imaging (SWI) may have the potential to depict the perivenous extent of white matter lesions (WMLs) in multiple sclerosis (MS). We aimed to assess the discriminatory value of the "central vein sign" (CVS). ⋯ • MRI continues to yield further information concerning MS lesions. • SWI adds diagnostic information in patients with possible MS. • The "central vein sign" was predominantly seen in MS lesions. • The "central vein sign" helps discriminate between MS and non-MS lesions.
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To evaluate the yield of each phase in a triphasic CT protocol used to diagnose acute mesenteric ischaemia (AMI). ⋯ • Triphasic CT is the current gold standard for diagnosing acute mesenteric ischaemia. • Multiphase CT multiplies the radiation dose when compared to single phase CT. • Each phase in a multiphase CT examination should be independently validated. • Unenhanced CT is not required for diagnosis of acute mesenteric ischaemia. • CT angiography should be performed for diagnosis of acute mesenteric ischaemia.
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We investigated the relationship between white-matter alteration and cognitive status in Parkinson's disease (PD) with and without dementia by using diffusion tensor imaging. ⋯ • Dementia is a common and important non-motor sign of Parkinson's disease (PD). • The neuropathological basis of dementia in PD is not clear. • DTI shows abnormalities in the prefrontal white matter in PD with dementia. • Prefrontal white matter alteration may be useful biomarker of dementia in PD.