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Childs Nerv Syst ; 36(3): 591-599, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31428872

RESUMO

PURPOSE: A computed tomography (CT) scan in childhood is associated with a greater incidence of brain cancer. CT scans are used in patients with ventriculo-peritoneal (VP) shunts in whom shunt dysfunction is suspected. We wanted to assess the CT scan exposure in a cohort of children with VP shunts and attempt to quantify their radiation exposure. METHODS: A single-centre retrospective analysis was performed recording CT head scans in children younger than 18 years with VP shunts. Hospital coding data was cross-referenced with electronic records and radiology databases both in our neurosurgery unit and in hospitals referring to it. RESULTS: One hundred and fifty-two children with VP shunts were identified. The mean time with shunt in situ was 5.4 years (± 4.61). A mean of 3.33 CT scans (range 0-20) were performed on each child, amounting to 0.65 (± 0.87) CTs per shunt year. Based on 2 msv of radiation per scan, this equates to an average exposure of 1.31 msv per child per shunt year. CONCLUSION: Children who have multiple CT head scans for investigation of possible shunt dysfunction are at a greater risk of developing cancer. We discuss the implications of this increased risk and discuss strategies to limit radiation exposure in children with VP shunts.


Assuntos
Hidrocefalia , Exposição à Radiação , Derivações do Líquido Cefalorraquidiano , Criança , Humanos , Hidrocefalia/cirurgia , Lactente , Estudos Retrospectivos , Tomografia Computadorizada por Raios X , Derivação Ventriculoperitoneal/efeitos adversos
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