[Diagnostic value of CT in congenital disorders of the great vessels]
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Computed tomography (CT) effectively detects congenital cardiovascular anomalies, including great vessel abnormalities. Enhanced and dynamic CT scans provide detailed insights into vascular structures and blood flow.
Area of Science:
- Cardiovascular Imaging
- Diagnostic Radiology
- Medical Physics
Background:
- Computed tomography (CT) is increasingly used for cardiovascular system evaluation.
- Accurate visualization of the aorta and its branches is crucial for diagnosing congenital anomalies.
Purpose of the Study:
- To describe CT findings of congenital anomalies of the great vessels.
- To evaluate the diagnostic utility of CT in identifying these abnormalities.
Main Methods:
- Retrospective analysis of 850 cardiovascular CT studies.
- Detailed review of CT findings in 14 patients with 16 congenital anomalies.
- Comparison of plain, enhanced, and dynamic CT techniques.
Main Results:
- CT clearly demonstrated the aorta and its major branches in most cases.
- CT successfully diagnosed various congenital anomalies, including l-corrected transposition, double aortic arch, sinus of Valsalva aneurysm, and right-sided descending aorta.
- Enhanced CT provided more informative results than plain CT for cardiovascular abnormalities.
Conclusions:
- CT is a valuable tool for diagnosing congenital anomalies of the great vessels.
- Enhanced and dynamic CT techniques offer detailed evaluation of cardiovascular structures and blood flow.
- CT enables accurate diagnosis of complex great vessel abnormalities.
Abstract:
Computed tomographic (CT) studies of the cardiovascular system were performed on 850 cases at our institute during the last five years. The aorta was clearly demonstrated by CT from the aortic root to the bifurcation of the iliac artery, and in most cases the main aortic branches including the coronary, brachiocephalic, common carotid, subclavian, celiac, superior mesenteric, renal and iliac arteries were satisfactorily evaluated (Fig. 1-3). Therefore CT renders us encouraging to detect the abnormality of these arteries. This paper described the CT findings of congenital anomalies of the great vessels in 14 patients with 16 anomalies including two cases of l-corrected transposition of the great vessels, two of double aortic arch, one of aneurysm of the sinus of Valsalva, six of patent ductus arteriosus (PDA) and five of right-sided descending aorta, two of which had double aortic arch aforementioned and the remaining three had dextrocardia. The diagnosis of these abnormalities except for PDA were made only by CT. For instance, l-corrected transposition of the great vessels was diagnosed easily by observing the side-to-side relationship of the great vessels, the aorta is situated to the left and anterior to the pulmonary artery. In the case of double aortic arch, not only the left and right aortic arch, but also the degree of narrowing as well as compression of the trachea and esophagus were well evaluated. The diagnosis of aneurysm of the sinus of Valsalva was made by the characteristically marked dilatation of the aorta at the level of sinus of Valsalva on CT. Only in one case of PDA, the ductus connecting the descending aorta to the left pulmonary artery was demonstrated by CT. Plain CT was well tolerable, but enhanced CT was much more informative to detect cardiovascular abnormalities, and moreover, dynamic CT was rewarding in the detailed evaluation of blood flow in the cardiovascular system.