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).
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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
- 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.
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