Applied value of color Doppler flow imaging in diagnosis of congenital subglottic haemangioma in infant

To investigate the value of color Doppler flow imaging（CDFI） in the diagnosis of congenital subglottic hemangioma（CSH） in infants. The data of 18 children with CSH who underwent laryngeal CDFI examination were collected and analyzed retrospectively, and compared with those who underwent laryngeal ultrasound examination at the same time. The shape, size, blood flow characteristics of the tumor and its relationship with airway were observed. Eighteen cases were treated with propranolol orally. CDFI of larynx was reexamined after 1 week, 1 month and 3 months of treatment. CDFI could clearly show the location, shape, size and range of CSH in 18 cases, as well as the relationship with airway and surrounding tissues. CDFI images of CSH showed that the tumor was massive or nodular with abundant or patchy blood flow signals. Hemangioma was found in 6 cases on the right side, 8 cases on the left side, and 4 cases on both sides. CDFI can be used in the diagnosis of subglottic hemangioma. It has advantages in displaying