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Bronchial arteries: CT demonstration with arteriographic correlation
Insights
Dynamic computed tomography (CT) effectively visualizes enlarged bronchial arteries and their anatomical relationships. This imaging technique aids in understanding potential esophageal compression by the right bronchial artery.
Area of Science:
- Radiology
- Medical Imaging
- Anatomy
Background:
- Enlarged bronchial arteries can cause symptoms due to their anatomical position.
- Arteriography is a standard method for documenting bronchial artery size.
Purpose of the Study:
- To evaluate the visibility of bronchial arteries using dynamic computed tomography (CT).
- To describe the anatomical relationship of the mediastinal portion of the bronchial artery to surrounding structures.
Main Methods:
- Dynamic CT scans were performed on nine patients with enlarged bronchial arteries.
- Retrospective review of plain and contrast-enhanced CT scans from two additional patients.
- Focus on visualizing the mediastinal portion of the bronchial artery.
Main Results:
- The mediastinal bronchial artery was successfully visualized as nodular or linear densities on dynamic CT.
- The right bronchial artery originates from the thoracic aorta's medial wall; the left arises from the anterior wall.
- Enlarged right bronchial arteries may compress the esophagus due to their retroesophageal course.
Conclusions:
- Dynamic CT is a valuable tool for visualizing bronchial arteries and their mediastinal course.
- CT can reveal the anatomical basis for symptoms like esophageal compression.
- The origin and pathway of bronchial arteries can be accurately depicted by CT.
Abstract:
Dynamic computed tomography (CT) was performed in nine patients with enlarged bronchial arteries documented by arteriography. Plain and contrast-material-enhanced CT scans of two more patients with prominent bronchial arteries were retrospectively reviewed. The study was conducted to determine visibility of the bronchial artery with CT and to depict the anatomic relationship of its mediastinal portion to surrounding structures. The mediastinal portion of the bronchial artery was successfully outlined as nodular or linear densities on all dynamic CT scans. The right bronchial artery was confirmed to arise from the medial wall of the thoracic aorta, whereas the left arises from the anterior wall. Because of its retroesophageal location, the enlarged right bronchial artery can compress the posterior wall of the esophagus. It is postulated that the left bronchial artery occasionally traverses the aorticopulmonary window, recognized as nodular or linear densities below the aortic arch on CT scans.