Acute neuromedical and neurosurgical admissions. Standard and ultrafast MR imaging of the brain compared with cranial CT |
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Authors: | Griffiths P D Wilkinson I D Patel M C Romanowski C A Mitchell P Graham A Powell T Hodgson T J Paley M N |
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Affiliation: | a Section of Academic Radiology, University of Sheffield, and Departments of.b Radiology.c Neurosurgery.d Neurology, Royal Hallamshire Hospital, Sheffield, UK.. |
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Abstract: | Purpose: To evaluate the role of standard and ultrafast MR brain imaging and compare the information with CT.Material and Methods: This was a prospective study of 114 patients with acute neurological symptoms and signs. CT brain examinations consisted of axial non-enhanced images. MR imaging consisted of standard spin-echo/fast spin-echo sequences and a series of rapid techniques including echoplanar and single shot fast spin-echo sequences.Results: Using standard MR methods, 41% of the patients had all five sequences of good technical quality, while using ultrafast methods 81% of the patients had good technical quality examinations in all five sequences. In 3% of the cases, ischaemic stroke was incorrectly reported on CT. In 24% of the cases, MR gave extra diagnostic information not reported on CT and in a further 8%, one neuroradiologist reported the abnormality in agreement with the MR, whilst the other neuroradiologist reported the CT as normal. In 2 cases, subarachnoid haemorrhage was missed on MR. Subarachnoid haemorrhage was not shown on the ultrafast sequences.Conclusion: MR can be used to image acute neurological admissions with a high success rate, particularly using ultrafast methods. In many cases, MR provided extra information of direct clinical relevance not shown on CT. |
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Keywords: | Stroke Subarachnoid Haemorrhage Ct Mr Imaging |
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