Interrupted aortic arch type B in neonate – multidetector computed tomography diagnosis.Case report and review the literature
- Genova, D. Kostova-Lefterova, A. Kaneva, B. Bogdanova, P. Spasova
The interrupted aortic arch is a congenital condition with missing anatomical and lumenal connection between the ascending and descending aorta. This rare anomaly, with a frequency of 3 per 1 million infants (1% of congenital cardiac anomalies), was first described in 1778 by Steidele. The abnormality is often diagnosed and corrected in the neonatal period. The diagnosis of the anomaly is a challenge. The multidetector computed tomography (MDCT) is a leading imaging method. In the last decade, due to the high spatial and inherent high-contrast resolution, differences between tissues that differ in physical density by less than 1% can be distinguished, and the short time of the examination, resulting in reduced use of sedation. Main disadvantage of this imaging modality is the use of ionizing radiation and the radiation dose of the patient. A case of a newborn with interrupted aortic arch type B is presented. The anomaly represented and described by MDCT with modified protocol leading to almost two times reduced total time of the examination and two times lower patient dose, while maintaining good diagnostic image quality.
Key words: INTERRUPTED AORTIC ARCH. MULTIDETECTOR COMPUTED TOMOGRAPHY. PATIENT DOSE