Imaging dose from cone beam computed tomography in radiation therapy

Parham Alaei, Emiliano Spezi

Research output: Contribution to journalReview articlepeer-review

61 Scopus citations

Abstract

Imaging dose in radiation therapy has traditionally been ignored due to its low magnitude and frequency in comparison to therapeutic dose used to treat patients. The advent of modern, volumetric, imaging modalities, often as an integral part of linear accelerators, has facilitated the implementation of image-guided radiation therapy (IGRT), which is often accomplished by daily imaging of patients. Daily imaging results in additional dose delivered to patient that warrants new attention be given to imaging dose. This review summarizes the imaging dose delivered to patients as the result of cone beam computed tomography (CBCT) imaging performed in radiation therapy using current methods and equipment. This review also summarizes methods to calculate the imaging dose, including the use of Monte Carlo (MC) and treatment planning systems (TPS). Peripheral dose from CBCT imaging, dose reduction methods, the use of effective dose in describing imaging dose, and the measurement of CT dose index (CTDI) in CBCT systems are also reviewed.

Original languageEnglish (US)
Pages (from-to)647-658
Number of pages12
JournalPhysica Medica
Volume31
Issue number7
DOIs
StatePublished - Nov 2015

Keywords

  • Cone beam CT
  • Imaging dose
  • KV CBCT
  • MV CBCT

Fingerprint Dive into the research topics of 'Imaging dose from cone beam computed tomography in radiation therapy'. Together they form a unique fingerprint.

Cite this