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CT of the duodenojejunal junction
C K Chou1, J M Chang, T C Tsai
1Department of Radiology, Chi Mei Foundation Hospital, Tainan, Taiwan, Republic of China.
Abdominal Imaging
|September 1, 1995
Summary
The duodenojejunal junction (DJJ) is most commonly located to the left or left-half of the vertebral body on CT scans. This study provides anatomical data for the DJJ
Area of Science:
- Radiology
- Anatomy
- Gastrointestinal Imaging
Background:
- The precise anatomical location of the duodenojejunal junction (DJJ) is crucial for interpreting gastrointestinal imaging.
- Computed tomography (CT) is a common modality used for abdominal imaging, but detailed anatomical descriptions of the DJJ's location can vary.
Purpose of the Study:
- To determine the anatomical location of the duodenojejunal junction (DJJ) using computed tomography (CT).
- To establish reference points for the DJJ's position in relation to vertebral levels and the aorta.
Main Methods:
- Retrospective review of 309 consecutive CT examinations.
- Exclusion of 49 examinations due to pathological distortion or lack of contrast.
- Identification and analysis of DJJ location in 224 examinations based on defined anatomical criteria.
Main Results:
- The DJJ was identified in 224 examinations.
- DJJ location: 33.5% left, 38.8% left half, 1.8% right half/right of vertebral body.
- Anteroposterior position: 84.4% anterior to aorta.
- Cephalocaudal position: commonly at L1/L2 levels.
Conclusions:
- The duodenojejunal junction (DJJ) is predominantly located on the left or in the left half of the vertebral body on CT.
- Findings provide valuable anatomical data for radiologists interpreting upper gastrointestinal CT scans.
- Understanding DJJ location aids in diagnosing congenital anomalies and pathological conditions affecting the duodenum and jejunum.