;Distension:
On abdominal X-rays, the small intestine is considered to be abnormally dilated when the diameter exceeds 3 cm.<ref name=medscape>{{cite web|url=http://emedicine.medscape.com/article/374962-overview|title=Small-Bowel Obstruction Imaging|website=[[Medscape]]|date=2016-09-22|author=Ali Nawaz Khan|accessdate=2017-02-07}}</ref><ref>{{cite web|url=http://www.radiologymasterclass.co.uk/tutorials/abdo/abdomen_x-ray_abnormalities/pathology_small_bowel_obstruction|title=Abdominal X-ray - Abnormal bowel gas pattern|website=radiologymasterclass.co.uk|accessdate=2017-02-07}}</ref> This number accounts for an expected geometric magnification in radiography, where the projection on the detector becomes larger than the actual organ.
Grading:
https://www.ncbi.nlm.nih.gov/pubmed/17331829
https://www.hindawi.com/journals/bmri/2016/6569103/
==Report==