Use of multiplanar reformatted radiographic and digitally reconstructed radiographic images for planning conformal radiation therapy.

I. J. Das, K. P. McGee, D. A. Fein, S. J. Milito, G. Shammo, W. J. Curran, L. R. Coia

Research output: Contribution to journalArticle

3 Scopus citations


A three-dimensional treatment planning system capable of gantry, collimator, and table rotations is required for a noncoplanar conformal therapy. Unfortunately, such a system is not widely available. A method in which multiplanar reformatted radiographic (MPR) and digitally reconstructed radiographic (DRR) images are used is presented for conformal treatment of brain tumors. A head phantom containing a target volume was scanned on a computed tomographic (CT) simulator. The coronal MPR images were digitized on a treatment planning system to create a conformal block of the planned treatment field. The DRR images were generated on the CT simulator with the setup parameters calculated from the treatment planning system. A second set of conformal blocks was generated based on DRR images of the fields. The accuracy of the MPR- and DRR-generated blocks was verified on the vertex field. The differences between the actual planning target volume and the field edges of the MPR and DRR blocks were within +/- 4 mm and +/- 2 mm, respectively. The authors conclude that the MPR and DRR images could be successfully used to generate conformal blocks and for treatment planning of noncoplanar beams in radiation therapy.

Original languageEnglish (US)
Pages (from-to)1483-1488
Number of pages6
JournalRadiographics : a review publication of the Radiological Society of North America, Inc
Issue number6
StatePublished - Nov 1995


ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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