CT
The stomach, duodenum, and jejunum are dilated and filled with fluid/oral contrast. The small bowel abruptly transitions in mid-abdomen with a "swirled appearance". Distally to the point of volvulus, there is a long segment of small bowel in the mid abdomen which is dilated, mildly thickened/irregular, and slightly hyperenhancing. However, this segment of bowel gradually transitions into normal caliber distal small bowel, without another point of obstruction.