Radiation dose management: Part 1, minimizing radiation dose in CT-guided procedures

Kedar N. Chintapalli, Richard S. Montgomery, Mustapha Hatab, Venkata S. Katabathina, Kenneth Guiy

Research output: Contribution to journalReview articlepeer-review

29 Scopus citations


OBJECTIVE. The purpose of this article is to discuss radiation dose during CT-guided interventions and to explain how radiologists can modify technical factors to minimize radiation doses. Scanner-displayed indexes of radiation exposure that are available during the procedure will be defined to increase awareness about CT radiation dose reduction during interventional procedures. CONCLUSION. CT-guided fluoroscopic procedures are safe and effective methods of directed intervention; however, the increasing use of medical radiation is an important consideration. The appropriate use of imaging with an acceptable risk must be considered in every case. During CT-guided interventions, scanner parameters that can be used as a guide for effective dose management, including the CT dose index and dose-length product, are readily displayed. These parameters can be adjusted by modifying the longitudinal scan length, number of scans, and tube current-exposure time product (milliampere x second [mAs]). A team approach to radiation dose reduction will work the best.

Original languageEnglish (US)
Pages (from-to)W347-W351
JournalAmerican Journal of Roentgenology
Issue number4
StatePublished - Apr 2012


  • CT dose index (CTDI)
  • CT-guided procedures
  • Dose-length product (DLP)
  • Radiation dose

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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