Prog Med Phys.  2012 Dec;23(4):292-302.

Dose and Image Evaluations of Imaging for Radiotherapy

Affiliations
  • 1Department of Radiology Science, Korea University, Seoul, Korea. wonhol@korea.ac.kr
  • 2Department of Radiation Oncology, Kyung Hee University International Medical Service, Seoul, Korea.
  • 3Department of Radiation Oncology, Asan Medical Center, Seoul, Korea.

Abstract

The patient dose in advanced radiotherapy techniques is an important issue. These methods should be evaluated to reduce the dose in diagnostic imaging for radiotherapy. Especially, the Computed Tomography in radiotherapy has been used widely; hence the CT was evaluated for dose and image in this study. The evaluations for dose and image were done in equal condition due to compare the dose and image simultaneously. Furthermore, the possibility of dose and image evaluations by using the Monte Carlo simulation MCNPX was confirmed. We made the iterative reconstruction for low dose CT image to elevate image quality with Maximum Likelihood Expectation Maximization; MLEM. The system we developed is expected to be used not only to reduce the patient dose in radiotherapy, also to evaluate the overall factors of image modalities in industrial research.

Keyword

Dose reduction; MLEM; Iterative reconstruction; CT

MeSH Terms

Diagnostic Imaging
Humans
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