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Paediatric multidetector CT angiography: spectrum of congenital thoracic vascular anomalies

Department of Radiology, Hacettepe University School of Medicine, Sihhiye, Ankara 06100, Turkey

View larger version (36K): [in this window] [in a new window]   Figure 1. A 3-month-old boy with double aortic arch. (a) Sagittal oblique and (b) cranial view volume-rendered three-dimensional images show double aortic arch surrounding the trachea (t). Right arch (R) is wider than the left arch (L). DA, descending aorta.

View larger version (101K): [in this window] [in a new window]   Figure 2. A 6-year-old boy with a right-sided aortic arch and aberrant left subclavian artery. Volume-rendered three-dimensional images in (a) anterior and (b) posterior projection show right-sided elongated aortic arch (A) with ipsilateral descending aorta (DA) and aberrant left subclavian artery originating from the right-sided aortic arch being the last branch which passes to the left (arrow). ALSA, aberrant left subclavian artery; RSA, right subclavian artery; LVA, left vertebral artery; RVA, right vertebral artery; LCCA, left common carotid artery; RCCA, right common carotid artery.

View larger version (39K): [in this window] [in a new window]   Figure 3. Aneurysm of aberrant right subclavian artery(AARSA) in a 23-month-old boy with truncus arteriosus. Volume-rendered three-dimensional images in (a) posterior and (b) anteriocranial projection show aneurysmatic aberrant right subclavian artery (arrow) arising from the left-sided arch (A) and passing from the left to the right. (c) Multiplanar coronal reformation demonstrate narrowing of the pulmonary artery (arrow) between the aberrant right subclavian artery (*) and the aorta (A) and moderate cardiomegaly. R, right side; L, left side.

View larger version (70K): [in this window] [in a new window]   Figure 4. A 13-month-old boy with pulmonary sling anomaly and tracheal bronchus (pig bronchus). (a–c) Axial consecutive CT images show the anomalous left pulmonary artery (arrow) which arises from the right pulmonary artery and passes to the left behind the trachea (t). In the same patient, (d) coronal multiplanar and (e) three-dimensional volume-rendered reformations show the tracheal bronchus (arrow) arising from the right lateral wall of the trachea just above the carina and directed toward the right upper lobe. Note that all images show narrowing of the trachea (t) at the level of the anomalous left pulmonary artery coursing to the left.

View larger version (95K): [in this window] [in a new window]   Figure 5. New diagnosis of type A interrupted aortic arch with large systemic collaterals in a 4-month-old girl. (a) Sagittal multiplanar reformation and (b) volume-rendered three-dimensional images show aortic interruption (arrow) just beyond the left subclavian artery (S) with dilated posterior collateral intercostal arteries (arrowheads). A, aortic arch; DA, descending aorta.

View larger version (72K): [in this window] [in a new window]   Figure 6. A 12-month-old girl with short-segment aortic coarctation. (a) Sagittal and (b) coronal multiplanar reformations clearly demonstrate the location and extent of the narrowing (arrow) just beyond the left subclavian artery (S), which is mildly dilated. Posterior collateral intercostal arteries (arrowheads) arising distal to the coarctation and post-stenotic dilatation of the proximal descending aorta are also seen. A, aortic arch; DA, descending aorta.

View larger version (104K): [in this window] [in a new window]   Figure 7. Pulmonary atresia and ventricular septal defect in an 8-year-old girl with tetralogy of Fallot anomaly. (a) Axial CT image, (b) axial and (c) sagittal volume-rendered 3D reformations show aplasia of the main pulmonary artery (*). Non-confluent right (RPA) and left (LPA) pulmonary arteries filling by collateral arteries are seen. Ascending aorta (AA) is dilated. (d) Axial volume-rendered 3D reformation at the level of the ventricular system also shows ventricular septal defect (arrow). DA, descending aorta.