European radiology
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Comparative Study
Post-mortem computed tomography compared to forensic autopsy findings: a French experience.
The principal aim of our study was to establish concordance between post-mortem CT (PMCT) and forensic standard autopsy (SA) in detecting lesions according to different anatomical regions. A secondary aim was to determine the efficacy of PMCT in showing lethal lesions. ⋯ • Post-mortem CT is increasingly performed as an alternative/adjunct to formal autopsy. • More modern CT systems provide greater anatomical scope. • PMCT can usually determine the cause of most deaths following trauma. • Prospective studies are still required to establish an algorithm for forensic CT.
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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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Comparative Study
The diagnostic accuracy of unenhanced MRI in the assessment of joint abnormalities in juvenile idiopathic arthritis.
To assess the diagnostic accuracy and reliability of MRI without contrast enhancement in the evaluation of JIA knee joint abnormalities. ⋯ • Magnetic resonance imaging is increasingly used to assess juvenile idiopathic arthritis. • Synovial hypertrophy, a marker of JIA activity, is well shown by MRI. • Omitting intravenous contrast medium decreases the reliability of synovial hypertrophy scores. • Bone marrow, cartilage and erosions can be reliably evaluated without contrast enhancement. • In the evaluation of JIA disease activity, unenhanced MRI is inadvisable.
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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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Multicenter Study
Optimisation of volume-doubling time cutoff for fast-growing lung nodules in CT lung cancer screening reduces false-positive referrals.
To retrospectively investigate whether optimisation of volume-doubling time (VDT) cutoff for fast-growing nodules in lung cancer screening can reduce false-positive referrals. ⋯ • Lung nodules are common in CT lung cancer screening, most being benign • Short-term follow-up CT can identify fast-growing intermediate-size lung nodules • Most fast-growing nodules on short-term follow-up CT still prove to be benign • A new volume-doubling time (VDT) cut-off is proposed for lung screening • The optimised VDT cutoff may decrease false-positive case referrals for lung cancer.