IMAGING SCIENCE AND PHOTOCHEMISTRY ›› 2022, Vol. 40 ›› Issue (6): 1586-1590.DOI: 10.7517/issn.1674-0475.220817

• Review and Articles • Previous Articles     Next Articles

Evaluation of CT Combined with HFUS in the Diagnosis and Reduction of Intussusception in Children

GUO Jiankang1, BAI Yanhong1, LIANG You1, LIU Yana1, XU Hua2   

  1. 1. Ultrasound Medicine Department, 3201 Hospital, Hanzhong 723000, Shaanxi, P. R. China;
    2. Medical Imaging Department, 3201 Hospital, Hanzhong 723000, Shaanxi, P. R. China
  • Received:2022-08-10 Online:2022-11-23 Published:2022-11-15

Abstract: This study investigated the value of CT combined with high-frequency ultrasonography (HFUS) in diagnosing intussusception and evaluating the effect of reduction in children. A total of 91 children with suspected intussusception were selected for clinical study, of which 67 cases were clinically diagnosed as intussusception (observation group), 24 cases were clinically diagnosed as acute appendicitis, obturator hernia and other diseases (control group). All children received abdominal HFUS and CT examination after admission. The above imaging data of the two groups of children were analyzed. The value of the two methods alone and in combination in the differential diagnosis of children with intussusception and the ability to evaluate the effect of reduction were observed. The detection rates of concentric circle sign and pseudo-kidney sign in the observation group were significantly higher than those in the control group (P<0.05). The incidence rates of target-shaped mass, comet-tail and kidney-shaped mass in the observation group were significantly higher than those in the control group (P<0.05). 67 children with confirmed intussusception, 61 cases were successfully reset with warm normal saline, and 6 cases were treated with surgery after the failure of warm normal saline reset. The measured values of the length and thickness of the intussusception in children with successful reduction were lower than those in children with failure (P<0.05). The ileum cross-sectional ultrasound of the children with successful reduction showed grape-like sign and the detection rate of copper coins were higher than those of the failure group (P<0.05). The sensitivity and specificity of CT combined with HFUS in diagnosing children with intussusception were 95.52% and 91.67%, respectively. Diagnosing children with intussusception based on abdominal CT features combined with abdominal HFUS sonographic features can significantly improve the sensitivity and specificity, and can evaluate the effect of repositioning with warm normal saline in children.

Key words: CT, high frequency ultrasound, diagnosis, children, intussusception, reduction effect