Simple method of stereotactic radiotherapy without stereotactic body frame for extracranial tumors

Y. Takai, M. Mituya, K. Nemoto, Y. Ogawa, Y. Kakuto, H. Matusita, K. Takeda, C. Takahashi, S. Yamada

Research output: Contribution to journalReview articlepeer-review

17 Citations (Scopus)

Abstract

Thirty-five patients with metastatic lung cancer(46 lesions) and twenty patients with primary lung cancer (21 lesions) have been treated with a simple method of stereotactic radiotherapy (SRT) without stereotactic body frame. Tumor size ranged from 1-4 cm in diameter. We used Vac-Lok cushion(Med-Tek) as a immobilization system. To be sure to include the respiratory movement of tumor to planning target volume(PTV), every patients were examined by fluoroscopy and radio-opaque catheters with the same length of tumor movement were attached on the anterior and lateral chest wall before CT simulation. A gold grain was implanted into a tumor that was invisible on fluoroscopy, as a radiomaker. Protocol of 60 Gy/8 fractions/2 weeks and 45 Gy/3 fractions/3-6 days were mainly used. The median follow-up period was 15 months for primary lung cancer and 19 months for metastatic lung cancer. Local control rates were 91% for metastatic lung cancer, 89% for primary lung cancer and 85% for T1, 2N0M0 cases. All patients developed mild pneumonitis or fibrosis about 4.5 months after SRT just in the treatment volume. Only three patients was symptomatic.

Original languageEnglish
Pages (from-to)403-407
Number of pages5
JournalNihon Igaku Hōshasen Gakkai zasshi. Nippon acta radiologica
Volume61
Issue number8
Publication statusPublished - 2001 Jul

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Oncology

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