Low dose computed tomography pulmonary angiography protocol for imaging pregnant patients: Can dose reduction be achieved without reducing image quality?

Darragh Halpenny, Brian Park, Jeffrey Alpert, Larry Latson, Nancy Kim, James Babb, Maria Shiau, Jane Ko

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Objective To assess the effect of low dose computed tomography pulmonary angiography (CTPA) on radiation dose in pregnant patients. Materials and methods An old CTPA protocol for pregnant patients was compared to a new protocol. Protocol changes included: decreased kVp; increased contrast injection rate; imaging after shallow inspiration. Patients undergoing CTPA before (phase 1 group) or after (phase 2 group) the protocol change, were assessed. Results Effective dose was lower in the phase 2 group (0.95 v 1.66 mSv; p < 0.001). Quantitative noise was lower in the phase 1 group (p < 0.001). Conclusion Low dose CTPA tailored for pregnancy reduces dose in pregnant patients.

Original languageEnglish (US)
Pages (from-to)101-105
Number of pages5
JournalClinical Imaging
Volume44
DOIs
StatePublished - Jul 1 2017
Externally publishedYes

Keywords

  • Computed tomography
  • Image quality
  • Pregnancy
  • Pulmonary angiography
  • Radiation

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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