Document Detail

CT evaluation of Chamberlain's, McGregor's, and McRae's skull-base lines.
MedLine Citation:
PMID:  19070699     Owner:  NLM     Status:  MEDLINE    
AIM: To evaluate the mean distance from the odontoid process of C2 to the standard skull-base lines (Chamberlain's, McGregor's, and McRae's lines) on computed tomography (CT) imaging. To compare these measurements to previously documented plain radiograph and magnetic resonance imaging (MRI) measurements. MATERIALS AND METHODS: Reformatted midline sagittal CT images of 150 adults were retrospectively evaluated. The shortest perpendicular distance was measured from the Chamberlain's, McGregor's and McRae's baselines for each subject to the odontoid tip. Statistical analysis was performed to compare the CT data with the previously obtained MRI and plain film data. RESULTS: The mean position of the odontoid process was 1.4mm below Chamberlain's line (median 1.2 mm, SD 2.4 mm), 0.8 mm (median 0.9 mm, SD 3 mm) below McGregor's line and 5 mm (median 5 mm, SD 1.8 mm) below McRae's line. There is no significant difference between male and female results (p>0.05) or between these CT and previous MRI measurements (p>0.05). CONCLUSION: These results provide the mean and range of normal distance from the odontoid process to the most frequently used skull-base lines on the current population on CT.
C G Cronin; D G Lohan; J N Mhuircheartigh; C P Meehan; J Murphy; C Roche
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Publication Detail:
Type:  Journal Article     Date:  2008-10-14
Journal Detail:
Title:  Clinical radiology     Volume:  64     ISSN:  1365-229X     ISO Abbreviation:  Clin Radiol     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2008-12-16     Completed Date:  2009-01-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1306016     Medline TA:  Clin Radiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  64-9     Citation Subset:  IM    
Department of Radiology, University College Hospital, Galway, Ireland.
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MeSH Terms
Aged, 80 and over
Anthropometry / methods
Image Interpretation, Computer-Assisted / methods
Middle Aged
Odontoid Process / anatomy & histology,  radiography*
Reference Values
Retrospective Studies
Skull Base / anatomy & histology,  radiography*
Tomography, X-Ray Computed / methods
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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