[Analysis of the positive rate of otitis media in 1-12 years old children based on brain MRI].

To investigate the positive imaging rate of otitis media in children aged 1-12 years by analyzing the positive rate of otitis media suggested by cranial magnetic resonance imaging（MRI） images in children. By collecting the brain MRI images of children aged 1-12 in Department of Otolaryngology, Jinan children's Hospital from January 2014 to December 2020, the overall incidence of otitis media and mastoiditis was firstly determined, and then it was divided into 12 age groups according to age, each age group was split into boy and girl groups according to gender, each group was divided into left, right and bilateral groups, with the changes of otitis media and mastoiditis in the scanning field as the positive standard statistical analysis of the results. Among 12 439 children in the study, 1321 cases were diagnosed with tympanitis, with a positive rate of 10.

[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.