Infected atrioventricular shunt: Importance of delayed (24-hour) Tc-99m HMPAO leukocyte imaging

S. Atay, M. Kumar, S. Naddaf, H. El-Zeftawy, H. H. Abujudeh, H. M. Abdel-Dayem

Research output: Contribution to journalArticlepeer-review


The current recommendation for Tc-99m HMPAO-labeled leukocyte imaging is at 4-6 hours. This early imaging might not be long enough for localization of the labeled leukocytes at a site of infection and for further blood pool clearance. The scintigraphic findings of a patient with an infected ventriculoatrial shunt were negative at 4 hours, whereas at 24 hours there was intense uptake in the region of the right atrium. The case demonstrates that the 24-hour images were more sensitive to localize an infected catheter in the right atrium. If early images performed the same day as the administration of Tc-99m HMPAO-labeled leukocyte appear negative, delayed imaginal the next day at 24 hours is recommended.

Original languageEnglish (US)
Pages (from-to)555-556
Number of pages2
JournalClinical nuclear medicine
Issue number8
StatePublished - 1998
Externally publishedYes


  • Infected Atrioventricular Shunt
  • Infection Imaging
  • Tc-HMPAO Leukocyte

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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