| A comparison of CT and MRI in the assessment of the pituitary and parasellar region. | |
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MedLine Citation:
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PMID: 2013189 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We have carried out a prospective study to compare high resolution thin slice, contrast-enhanced, axial computed tomography (CT) with unenhanced magnetic resonance imaging (MRI) at 1.5T in the assessment of the pituitary and parasellar region. Forty patients with suspected pituitary disease presenting to an endocrine unit were studied. MRI was superior to CT for the identification of the posterior pituitary and pituitary stalk and was better at showing the cystic nature of tumours. Visualization of the optic chiasm and assessment of displacement of the optic chiasm and the carotid arteries were also better with MRI. CT was equally good at showing cavernous sinus displacement or invasion, sphenoid sinus invasion and erosion of the floor of the sella turcica and was the only technique able to show calcification of the gland. More focal abnormalities were seen in the pituitary gland with CT than with unenhanced MRI, but there was a higher false positive rate for microadenoma detection with CT. All the scans were interpreted separately by three observers, two radiologists and one clinician. The percentage agreement between the observers for the identification of pituitary and parasellar structures was better for MRI than for CT and the clinician in particular found interpretation of the MR images easier. MRI thus not only gives more information overall than CT but it is a more reliable technique between different observers for the assessment of the pituitary and parasellar region. |
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Authors:
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R L Guy; J J Benn; A B Ayers; J B Bingham; C Lowy; T C Cox; P H Sonksen |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Clinical radiology Volume: 43 ISSN: 0009-9260 ISO Abbreviation: Clin Radiol Publication Date: 1991 Mar |
Date Detail:
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Created Date: 1991-05-14 Completed Date: 1991-05-14 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 1306016 Medline TA: Clin Radiol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 156-61 Citation Subset: IM |
Affiliation:
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Department of Radiology, St Thomas' Hospital, London. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Calcinosis / radiography Carotid Arteries / pathology Cavernous Sinus / pathology Female Humans Magnetic Resonance Imaging* Male Middle Aged Optic Chiasm / pathology Pituitary Diseases / diagnosis*, pathology, radiography Pituitary Gland / pathology Prospective Studies Sella Turcica / pathology*, radiography Tomography, X-Ray Computed* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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