McGregor line
Citation, DOI, disclosures and article data
Citation:
Shayegi B, Jones J, Bell D, et al. McGregor line. Reference article, Radiopaedia.org (Accessed on 19 Jan 2025) https://doi.org/10.53347/rID-22817
Permalink:
rID:
22817
Article created:
25 Apr 2013,
Behnam Shayegi
Disclosures:
At the time the article was created Behnam Shayegi had no recorded disclosures.
View Behnam Shayegi's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Jeremy Jones had no recorded disclosures.
View Jeremy Jones's current disclosures
Revisions:
17 times, by
11 contributors -
see full revision history and disclosures
Systems:
Synonyms:
- McGregor lines
The McGregor line is a modification of the Chamberlain line and is used in the evaluation of basilar invagination when the opisthion is not identified on plain radiographs.
It refers to a line connecting posterior edge of the hard palate to the most caudal point of the occipital curve. If the tip of the dens lies more than 4.5 mm above this line it is indicative of basilar invagination.
See also
Quiz questions
{"containerId":"expandableQuestionsContainer","displayRelatedArticles":true,"displayNextQuestion":true,"displaySkipQuestion":true,"articleId":22817,"questionManager":null,"mcqUrl":"https://radiopaedia.org/articles/mcgregor-line-1/questions/262?lang=us"}
References
- 1. Kwong Y, Rao N, Latief K. Craniometric measurements in the assessment of craniovertebral settling: are they still relevant in the age of cross-sectional imaging?. AJR Am J Roentgenol. 2011;196 (4): W421-5. doi:10.2214/AJR.10.5339 - Pubmed citation
- 2. Keats TE, Sistrom C. Atlas of Radiologic Measurement. Mosby. (2001) ISBN:0323001610. Read it at Google Books - Find it at Amazon
Incoming Links
Articles:
Cases:
Multiple choice questions:
Unable to process the form. Check for errors and try again.