European radiology
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To identify and evaluate profiles of US and CT features associated with acute appendicitis. ⋯ Most patients with appendicitis can be categorised within a few imaging profiles on US and CT. When two of the essential features are present the diagnosis of appendicitis can be made accurately.
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Review
RECIST revised: implications for the radiologist. A review article on the modified RECIST guideline.
The purpose of this review article is to familiarize radiologists with the recently revised Response Evaluation Criteria in Solid Tumours (RECIST), used in many anticancer drug trials to assess response and progression rate. The most important modifications are: a reduction in the maximum number of target lesions from ten to five, with a maximum of two per organ, with a longest diameter of at least 10 mm; in lymph nodes (LNs) the short axis rather than the long axis should be measured, with normal LN measuring <10 mm, non-target LN >or=10 mm but <15 mm and target LN >or=15 mm; osteolytic lesions with a soft tissue component and cystic tumours may serve as target lesions; an additional requirement for progressive disease (PD) of target lesions is not only a >or=20% increase in the sum of the longest diameter (SLD) from the nadir but also a >or=5 mm absolute increase in the SLD (the other response categories of target lesion are unchanged); PD of non-target lesions can only be applied if the increase in non-target lesions is representative of change in overall tumour burden; detailed imaging guidelines. Alternative response criteria in patients with hepatocellular carcinoma and gastrointestinal stromal tumours are discussed.
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To retrospectively analyze the performance of a commercial computer-aided diagnosis (CAD) software in the detection of pulmonary nodules in original and energy-subtracted (ES) chest radiographs. ⋯ CAD can improve lesion detection both on energy subtracted and non-subtracted chest images, especially for less experienced readers. The CAD program marked less FPs on energy-subtracted images than on original chest radiographs.
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To determine the diagnostic value of the anterior chamber depth (ACD) of a globe as seen on CT for detecting open-globe injury. ⋯ Change in the ACD is a helpful CT finding for detecting open-globe injury. A difference in the ACDs > or =0.4 mm is a helpful diagnostic criterion with excellent specificity.
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Clinical Trial
Criteria for the selective use of chest computed tomography in blunt trauma patients.
The purpose of this study was to derive parameters that predict which high-energy blunt trauma patients should undergo computed tomography (CT) for detection of chest injury. ⋯ Omission of CT in patients without any positive predictor could reduce imaging frequency by 18%, while most clinically relevant chest injuries remain adequately detected.