Course and variation of the intercostal artery by CT scan
| Autor: | Fergus V. Gleeson, Emma J. Helm, Omid Talakoub, Najib M. Rahman, Danial L. Fox |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
musculoskeletal diseases
Pulmonary and Respiratory Medicine Male Computed tomography Intercostal Muscles Ribs Critical Care and Intensive Care Medicine Imaging Three-Dimensional medicine.artery medicine Humans Aged Rib cage medicine.diagnostic_test business.industry Angiography Anatomy Arteries Middle Aged Intensity (physics) medicine.anatomical_structure Coronal plane Female Intercostal space Cardiology and Cardiovascular Medicine business Tomography X-Ray Computed Intercostal arteries Artery |
| Zdroj: | Chest. 143(3) |
| ISSN: | 1931-3543 |
| Popis: | BACKGROUND: It is conventionally taught that the intercostal artery is shielded in the intercostal groove of the superior rib. The continuous course and variability of the intercostal artery, and factors that may influence them, have not been described in a large number of arteries in vivo. METHODS: Maximal intensity projection reformats in the coronal plane were produced from CT scan pulmonary angiograms to identify the posterolateral course of the intercostal artery (seventh to 11th rib spaces). A novel semiautomated computer segmentation algorithm was used to measure distances between the lower border of the superior rib, the upper border of the inferior rib, and the position of the intercostal artery when exposed in the intercostal space. The position and variability of the artery were analyzed for association with clinical factors. RESULTS: Two hundred ninety-eight arteries from 47 patients were analyzed. The mean lateral distance from the spine over which the artery was exposed within the intercostal space was 39 mm, with wide variability (SD, 10 mm; 10th-90th centile, 28-51 mm). At 3 cm lateral distance from the spine, 17% of arteries were shielded by the superior rib, compared with 97% at 6 cm. Exposed artery length was not associated with age, sex, rib space, or side. The variability of arterial position was significantly associated with age (coefficient, 0.91; P < .001) and rib space number (coefficient, - 2.60; P < .001). CONCLUSIONS: The intercostal artery is exposed within the intercostal space in the first 6 cm lateral to the spine. The variability of its vertical position is greater in older patients and in more cephalad rib spaces. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|