Inferior Mesenteric Artery

The inferior mesenteric artery (IMA) (Fig. 1c) arises from the ventral aspect of the aorta approximately at the level of the L3 vertebral body and measures between 1.2 and 5.5 mm in diameter at its origin. This makes it difficult to image consistently with MRA [6].The first branch of the IMA is typically an ascending branch, which represents the left colic artery. The inferior mesenteric artery then gives off the sigmoid branches. More distally, the IMA becomes the superior rectal artery.

Branches The Middle Colic ArteryCoeliac Trunk Anatomy
Fig. 1a-c. Normal anatomy of the mesenteric arteries

a Celiac trunk A Celiac artery (CA) B Splenic artery C Common hepatic artery D Superior mesenteric artery (SMA)

1 Proper hepatic artery

2 Right hepatic artery

3 Left hepatic artery

4 Left gastric artery

5 Gastroduodenal artery

6 Right gastric artery

7 Right gastroepiploic artery

8 Left gastroepiploic artery b Superior mesenteric artery D Superior mesenteric artery (SMA)

1 Gastroduodenal artery

2 Medial colic artery

3 Right colic artery

4 Iliocolic artery

5 Jejunal- and ilieal arteries c Inferior mesenteric artery D Superior mesenteric artery (SMA) E Inferior mesenteric artery (IMA)

1 Left colic artery

2 Sigmoid arteries

3 Superior rectal artery rJ

Mesenteric Ima

Fig. 2a, b. MIP (a) and volume rendered (b) displays of a 3D CE MRA data set acquired in the early arterial phase demonstrate the arterial vascular anatomy in the abdomen. Beyond the aorta and both renal arteries, branches of the celiac trunk and the superior mesenteric artery are well depicted [Images courtesy of Dr. G. Schneider]

Fig. 2a, b. MIP (a) and volume rendered (b) displays of a 3D CE MRA data set acquired in the early arterial phase demonstrate the arterial vascular anatomy in the abdomen. Beyond the aorta and both renal arteries, branches of the celiac trunk and the superior mesenteric artery are well depicted [Images courtesy of Dr. G. Schneider]

A Celiac artery (CA) B Splenic artery C Common hepatic artery D Superior mesenteric artery (SMA) E Inferior mesenteric artery (IMA) a Right renal artery b Left renal artery c Left gastric artery d Gastroduodenal artery

Baby Sleeping

Baby Sleeping

Everything You Need To Know About Baby Sleeping. Your baby is going to be sleeping a lot. During the first few months, your baby will sleep for most of theday. You may not get any real interaction, or reactions other than sleep and crying.

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