Hybrid PET-CT simulation for radiation treatment planning in head-and-neck cancers: A brief technical report

Dwight E. Heron, Regiane S. Andrade, John Flickinger, Jonas Johnson, Sanjiv S. Agarwala, Andrew Wu, Shalom Kalnicki, Norbert Avril

Research output: Contribution to journalArticle

121 Citations (Scopus)

Abstract

To prospectively study the impact on tumor and normal tissue delineation for RT planning by use of hybrid PET-CT simulation for patients with head-and-neck cancer. Twenty-one patients were simulated in treatment position on a hybrid PET-CT scanner. Images were transferred to the Varian Eclipse planning system. Abnormal areas of fluorodeoxyglucose (FDG) uptake were contoured on PET for the gross tumor volume of primaries (GTVp) and abnormal nodal region of primaries (ABNp) then compared with the same CT gross tumor volumes (GTVc) and abnormal nodal region (ABNc). A statistical analysis was performed to evaluate the correlation of PET and CT volumes. Positron emission tomography demonstrated the primary in all cases, whereas CT did not find the primary in 3 cases. In 8 patients, additional areas of disease were seen only in PET. The average ratio of GTVc/GTVp was 3.1 (range, 0.3-23.6), whereas for ABNc/ABNp was 0.7 (range, 0-4). Volumes for the primaries were significantly larger on CT than on PET (p = 0.002) but not for nodal regions (p = 0.5). Hybrid PET-CT simulation is feasible and provides valuable information that results in greater delineation of normal tissues from tumor bearing areas at high risk for recurrence. This finding may further improve therapeutic window for IMRT for head-and-neck cancers.

Original languageEnglish (US)
Pages (from-to)1419-1424
Number of pages6
JournalInternational Journal of Radiation Oncology Biology Physics
Volume60
Issue number5
DOIs
StatePublished - Dec 1 2004
Externally publishedYes

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Head and Neck Neoplasms
Tumor Burden
planning
tumors
cancer
Radiation
radiation
Patient Simulation
delineation
Cone-Beam Computed Tomography
simulation
Positron-Emission Tomography
Neoplasms
Therapeutics
Recurrence
eclipses
statistical analysis
scanners
positrons
tomography

Keywords

  • FDG
  • head-and-neck cancer
  • Hybrid PET-CT
  • radiation simulation

ASJC Scopus subject areas

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Radiation

Cite this

Hybrid PET-CT simulation for radiation treatment planning in head-and-neck cancers : A brief technical report. / Heron, Dwight E.; Andrade, Regiane S.; Flickinger, John; Johnson, Jonas; Agarwala, Sanjiv S.; Wu, Andrew; Kalnicki, Shalom; Avril, Norbert.

In: International Journal of Radiation Oncology Biology Physics, Vol. 60, No. 5, 01.12.2004, p. 1419-1424.

Research output: Contribution to journalArticle

Heron, Dwight E. ; Andrade, Regiane S. ; Flickinger, John ; Johnson, Jonas ; Agarwala, Sanjiv S. ; Wu, Andrew ; Kalnicki, Shalom ; Avril, Norbert. / Hybrid PET-CT simulation for radiation treatment planning in head-and-neck cancers : A brief technical report. In: International Journal of Radiation Oncology Biology Physics. 2004 ; Vol. 60, No. 5. pp. 1419-1424.
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