Clinical radiology
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To identify weather and calendar factors that would enable prediction of daily emergency department (ED) imaging volume to aid appropriate scheduling of imaging resources for efficient ED function. ⋯ As ED triage volume was found to be the only factor associated with imaging volume for all techniques, analysis of predictors of ED triage volumes at a particular healthcare facility would be useful to determine imaging needs. Although calendar and weather factors were found to be minor or non-significant independent predictors of ED imaging utilisation, these may be important in influencing the actual number of ED triages.
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To investigate the determinants of paravalvular leak (PVL) occurring after transcatheter aortic valve implantation (TAVI). ⋯ The procedure-related THV/annulus sizing ratio was an important determinant of the degree of PVL after TAVI, whereas the MDCT-derived anatomical measurements of the aortic root and AVC were not predictors of PVL.
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To investigate whether clivus height (CH; the distance of the basion above Chamberlain's line) could be used to diagnose basilar invagination (BI) at computed tomography (CT). ⋯ Although not better than CL (the distance of the odontoid tip above Chamberlain's line), measurement of CH at CT is reproducible and can diagnose patients with BI.
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Diagnosing multiple sclerosis (MS) can be very challenging owing to its variable clinical features and lack of a definitive test. Magnetic resonance imaging (MRI) is a core diagnostic tool in the detection of MS lesions and demonstration of spatial and temporal distribution of disease. Moreover, MRI plays a crucial role in the exclusion of alternative diagnoses of MS. The aim of this review is to describe the typical MRI features of MS and to present a series of common mimics of MS with emphasis on their distinguishing features from MS.