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Introduction <p>This study aims to evaluate the clinical practice in the treatment of spine metastases using stereotactic body radiation therapy (SBRT) among members of the SEOR (Spanish Society of Radiation Oncology) SRS/SBRT Working Goup to gather comprehensive data on clinical protocols, equipment usage, and treatment parameters.</p> Materials and methods <p>A 31-question electronic survey via Google Forms platform was distributed to members of the Working Group, with responses collected from 24 Spanish institutions, representing 1 per institution. This study aimed to assess demographic profiles, equipment, treatment protocols, immobilization techniques, dose and fractionation schedules, IGRT practices, and prescription criteria for spine SBRT.</p> Results <p>Most respondents (64.3%) were radiation oncologists with over 10&#xa0;years of experience. The predominant equipment used was C-LINAC (85.7%). Most institutions (96.4%) had specific protocols for spine metastases management. The Spine Instability Neoplastic Score (SINS) was used by 85.7% of the surveyed for evaluating vertebral stability. According to the number of contiguous spine metastases treated, 81.5% treated up to two. Guidelines from Cox et al. and ESTRO were followed by 96.4% for intact spine metastases, with 81% adhering to Redmond et al. for adjuvant SBRT. Among the 24 surveyed centers, 32.1% used a single dose, 48.1% 2 fractions, 96.3% 3 fractions, and 74.1% 5 fractions. IGRT systems included CBCT (71.4%), X-ray (10.7%), and CBCT and X-ray (25%). The majority of responders (66.7%) indicated coverage of 95% of the PTV with 95–100% of the prescribed dose.</p> Conclusion <p>This survey highlights significant variability in equipment, protocols, and practices for spine SBRT among Spanish institutions. Standardization of treatment approaches could enhance consistency and oncologic outcomes in spine SBRT.</p>

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Stereotactic body radiation therapy (SBRT) practice patterns for spine metastases in Spain: a national survey by the SRS/SBRT SEOR (Spanish Society of Radiation Oncology) Working Group

  • 期刊论文

  • 发表日期：

    2026年4月24日

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  • Rafael García,
  • Maria José Pérez-Calatayud,
  • Eva Corrales,
  • Cristina Prieto,
  • Sara Vázquez,
  • Virginia García,
  • Iñigo San Miguel,
  • Carolina de la Pinta,
  • Virginia Morillo,
  • Jose Luis Monroy,
  • Marina Peña,
  • Luis Sopeña,
  • Beatriz Quiles,
  • Héctor Pérez-Montero,
  • Gonzalo Rodríguez,
  • Arturo Navarro,
  • María Veiras,
  • Jesús Blanco,
  • Paula Blasco,
  • Amalia Palacios,
  • Luis Larrea,
  • Javier Aristu,
  • José Expósito,
  • Sergi Benavente,
  • Raquel Ciérvide

摘要

Introduction

This study aims to evaluate the clinical practice in the treatment of spine metastases using stereotactic body radiation therapy (SBRT) among members of the SEOR (Spanish Society of Radiation Oncology) SRS/SBRT Working Goup to gather comprehensive data on clinical protocols, equipment usage, and treatment parameters.

Materials and methods

A 31-question electronic survey via Google Forms platform was distributed to members of the Working Group, with responses collected from 24 Spanish institutions, representing 1 per institution. This study aimed to assess demographic profiles, equipment, treatment protocols, immobilization techniques, dose and fractionation schedules, IGRT practices, and prescription criteria for spine SBRT.

Results

Most respondents (64.3%) were radiation oncologists with over 10 years of experience. The predominant equipment used was C-LINAC (85.7%). Most institutions (96.4%) had specific protocols for spine metastases management. The Spine Instability Neoplastic Score (SINS) was used by 85.7% of the surveyed for evaluating vertebral stability. According to the number of contiguous spine metastases treated, 81.5% treated up to two. Guidelines from Cox et al. and ESTRO were followed by 96.4% for intact spine metastases, with 81% adhering to Redmond et al. for adjuvant SBRT. Among the 24 surveyed centers, 32.1% used a single dose, 48.1% 2 fractions, 96.3% 3 fractions, and 74.1% 5 fractions. IGRT systems included CBCT (71.4%), X-ray (10.7%), and CBCT and X-ray (25%). The majority of responders (66.7%) indicated coverage of 95% of the PTV with 95–100% of the prescribed dose.

Conclusion

This survey highlights significant variability in equipment, protocols, and practices for spine SBRT among Spanish institutions. Standardization of treatment approaches could enhance consistency and oncologic outcomes in spine SBRT.