上次有秀過如何辨識和掃出Ascending colon,
這次用同樣的手法來呈現結腸不一樣的面貌，
不是每次都可以看到典型的Haustration,
尤其是裡面空空的時候。
Scanning tip:
Transverse scanning on lateral abdomen to identify colon
Then Rotate clockwise to do longitudinal scanning
Descending colon
Point-of-care ultrasound is the visual stethoscope in the 21st century