MRI may be helpful in the diagnosis of midgut volvulus in pregnancy. Findings on MRI suggestive of volvulus include whirlpool sign.
Volvulus MRI
Volvulus CT
Perianal abscess CT
Volvulus x ray
Perianal abscess MRI
Perianal abscess ultrasound
Ulcerative colitis CT
Anal fistula x ray