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Use of computed tomography and diffusion weighted imaging in children with ventricular shunt

  • Altan GunesEmail author
  • Ibrahim Halil Oncel
  • Serra Ozbal Gunes
  • Ahmet Ziya Birbilen
  • Sahin Hanalioglu
Original Article

Abstract

Purpose

To evaluate the indications, number, and imaging results of brain computed tomography (CT) and diffusion weighted imaging (DWI) in children with ventriculoperitoneal shunt, to estimate the radiation dose, and to evaluate the effectiveness of DWI.

Methods

This retrospectively study included 54 consecutive patients (boys/girls = 30/24, mean age, 3 ± 4.1 years) with shunt that were placed due to congenital abnormalities-hypoxic ischemic encephalopathy between January 2015 and March 2018. The presence of shunt-related complications (SRC) was assessed using clinical and neuroimaging findings, and the standard reference was accepted as the shunt revision. Size comparisons of ventricles were performed using Evans index and the frontal and occipital horn ratio, and each measurement made by the observers were compared using Bland-Altman analysis. A kappa coefficient and the intraclass correlation coefficient were calculated to assess the agreement between observers.

Results

The mean number of hospital admission, number of CT scans, and DWI were 5.8, 4.8, and 1.1, respectively per patient. A significant linear correlation was observed between hospital admission and CT scans (r = 0.288, p = 0.035). The number of CT scans and the cumulative effective dose per patient were higher in patients with SRC than in those without (p < 0.001). The mortality rate due to radiation-induced neoplasia has increased by 0.33% in the study period. The inter-observer agreement was perfect or substantial for the catheter visualization, assessment of the ventricular system on DWI, and for the image quality of DWI between observers (κ = 0.704–1, p ≤ 0.001). No significant difference was found between CT and DWI in the measurements of Evans index and the frontal and occipital horn ratio (p > 0.05). Inter-observer agreements between observers were almost perfect for the Evans index and the frontal and occipital horn ratio (ICC = 0.94–0.99, p < 0.001).

Conclusions

An awareness of the use of CT in children is still inadequate and difficulties in the diagnosis of SRC probably cause the overuse of CT. DWI should be preferred in the diagnosis of SRC and the follow-up of patients. Otherwise, the increase in the prevalence of several diseases, particularly neoplasia, may be inevitable because of the over use of CT.

Keywords

Ventriculoperitoneal shunt Radiation dose Diffusion weighted imaging 

Notes

Funding

No funding was received for this study.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Statement of informed consent was not applicable since the manuscript does not contain any patient data.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Radiology, Ankara Child Health and Diseases Hematology Oncology Training and Research HospitalUniversity of Health SciencesAnkaraTurkey
  2. 2.Department of Pediatric Neurology, Ankara Child Health and Diseases Hematology Oncology Training and Research HospitalUniversity of Health SciencesAnkaraTurkey
  3. 3.Department of Radiology, Dıskapı Yıldırım Beyazıt Training and Research HospitalUniversity of Health SciencesAnkaraTurkey
  4. 4.Department of Pediatric Emergency, Ankara Child Health and Diseases Hematology Oncology Training and Research HospitalUniversity of Health SciencesAnkaraTurkey
  5. 5.Department of Neurosurgery, Dıskapı Yıldırım Beyazıt Training and Research HospitalUniversity of Health SciencesAnkaraTurkey

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