A technique that facilitates an accurate comparison between stereotactic and IMRT plans

Nesrin Dogan, L. B. Leybovich, A. Sethi, E. Melian, M. J. Krasin, B. Emami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A non-invasive localization and immobilization method that facilitates tomographic intensity-modulated radiation treatment (IMRT) of intracranial tumors with accuracy comparable to that achieved with invasive methods were developed. This method combines coordinate systems of Linac based radiosurgery (RS), stereotactic radiotherapy (SRT), and tomographic IMRT treatment planning systems (TPSs). In this method, stereotactic localization frame (BRW-LF) with the NOMOS CT pointer attached to its top is used for CT scanning. Patient is scanned from the tip of the CT Pointer to the bottom ring of the localization frame. Thus, CT slices contain fiducial marks for RS, SRT, and tomographic IMRT. Contouring of patient anatomy and target(s) is done on imaging system that can communicate with both RS and NOMOS-IMRT TPSs. Treatment planning is concurrently done for both stereotactic and IMRT methods using the same study set. This provides more accurate comparison of competing treatment plans. Same patient immobilization system is used for both treatment techniques. For IMRT patient localization, a modified Target Box replaced the original NOMOS Target Box. This Target Box is attached to the Linac Target Localization Frame when a patient is in a treatment position. For fractionated IMRT treatments, the accuracy of frame repositioning is checked before every fraction using the stereotactic Depth Helmet. This method of immobilization and localization method was clinically tested. Based on the comparison of developed SRT and IMRT treatment plans, the IMRT method was selected. Depth Helmet measurements verified that an accurate (∼1mm) repositioning of the patient was achieved.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
EditorsJ.D Enderle
Pages1542-1545
Number of pages4
Volume2
StatePublished - 2000
Externally publishedYes
Event22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, United States
Duration: Jul 23 2000Jul 28 2000

Other

Other22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CountryUnited States
CityChicago, IL
Period7/23/007/28/00

Fingerprint

Radiation
Radiotherapy
Planning
Patient treatment
Imaging systems
Tumors
Scanning

Keywords

  • Immobilization and localization
  • Tomographic IMRT

ASJC Scopus subject areas

  • Bioengineering

Cite this

Dogan, N., Leybovich, L. B., Sethi, A., Melian, E., Krasin, M. J., & Emami, B. (2000). A technique that facilitates an accurate comparison between stereotactic and IMRT plans. In J. D. Enderle (Ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 2, pp. 1542-1545)

A technique that facilitates an accurate comparison between stereotactic and IMRT plans. / Dogan, Nesrin; Leybovich, L. B.; Sethi, A.; Melian, E.; Krasin, M. J.; Emami, B.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. ed. / J.D Enderle. Vol. 2 2000. p. 1542-1545.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dogan, N, Leybovich, LB, Sethi, A, Melian, E, Krasin, MJ & Emami, B 2000, A technique that facilitates an accurate comparison between stereotactic and IMRT plans. in JD Enderle (ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 2, pp. 1542-1545, 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Chicago, IL, United States, 7/23/00.
Dogan N, Leybovich LB, Sethi A, Melian E, Krasin MJ, Emami B. A technique that facilitates an accurate comparison between stereotactic and IMRT plans. In Enderle JD, editor, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 2. 2000. p. 1542-1545
Dogan, Nesrin ; Leybovich, L. B. ; Sethi, A. ; Melian, E. ; Krasin, M. J. ; Emami, B. / A technique that facilitates an accurate comparison between stereotactic and IMRT plans. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. editor / J.D Enderle. Vol. 2 2000. pp. 1542-1545
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