Show Summary Details
Page of

Imaging in neurological diseases 

Imaging in neurological diseases
Chapter:
Imaging in neurological diseases
Author(s):

Andrew J. Molyneux

, Shelley Renowden

, and Marcus Bradley

DOI:
10.1093/med/9780199204854.003.02433_update_001

August 28, 2014: This chapter has been re-evaluated and remains up-to-date. No changes have been necessary.

Update:

Additional information on the use of MRI in patients presenting with a seizure.

Updated on 28 Nov 2012. The previous version of this content can be found here.
Page of

PRINTED FROM OXFORD MEDICINE ONLINE (www.oxfordmedicine.com). © Oxford University Press, 2015. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Medicine Online for personal use (for details see Privacy Policy).

date: 22 November 2017

Computed tomography (CT) and magnetic resonance imaging (MRI) are the most important imaging techniques in the diagnosis of neurological disease.

During exposure to a series of narrow X-ray beams, a detector array spins around the patient and measures the absorption coefficients of tissues within the beam, the different coefficients providing image contrast. Helical and multidetector CT now allow analysis of up to 256 slices at a time (and with the prospect of more), with the patient moving continuously through the machine. This enables very rapid scanning and the ability to acquire angiographic (CT angiography and venography) and functional information (CT perfusion). A series of cross-sectional images are produced, usually in the axial plane. Multiplanar reconstructions can be obtained in the sagittal, coronal, and oblique planes, as required. Iodinated contrast agents, as employed in general vascular imaging, are commonly used for image enhancement....

Access to the complete content on Oxford Medicine Online requires a subscription or purchase. Public users are able to search the site and view the abstracts for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.