Radiologic sign

A radiologic sign is an objective indication of some medical fact (that is, a medical sign) that is detected by a physician during radiologic examination with medical imaging[1] (for example, via an X-ray, CT scan, MRI scan, or sonographic scan).

The dark areas on both sides of the intestines indicate that air is present in both sides. This is called "Rigler's sign".

Examples

References
  1. Parker, Mark S.; Chasen, Marvin H.; Paul, Narinder (1 March 2009). "Radiologic Signs in Thoracic Imaging: Case-Based Review and Self-Assessment Module". American Journal of Roentgenology. 192 (3_supplement): S34–S48. doi:10.2214/AJR.07.7081. ISSN 0361-803X. Retrieved 23 April 2019.
  2. Gaillard, Frank. "Double decidual sac sign | Radiology Reference Article | Radiopaedia.org". Radiopaedia. Retrieved 9 May 2021.

See also

List of radiologic signs

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