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A Systematic Review Into the Radiologic Features Predicting Local Recurrence After Stereotactic Ablative Body Radiotherapy (SABR) in Patients With Non-Small Cell Lung Cancer (NSCLC)

  • Katherine Lee*
  • , Tue Le
  • , Eric Hau
  • , Gerard G. Hanna
  • , Harriet Gee
  • , Shalini Vinod
  • , Salma Dammak
  • , David Palma
  • , Anselm Ong
  • , Roland Yeghiaian-Alvandi
  • , Jacqueline Buck
  • , Rebecca Lim
  • *Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

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Abstract

Purpose

Posttreatment surveillance for local recurrence (LR) after stereotactic ablative body radiotherapy (SABR) can include both fluorodeoxyglucose-positron emission tomography (FDG-PET) and computed tomography (CT). Radiation-induced lung injury shares a similar appearance to LR after treatment, making the detection of LR on imaging difficult for clinicians. We aimed to summarize radiologic features of CT and FDG-PET predicting LR and to evaluate radiomics as another tool for detecting LR.

Methods and Materials

We searched MEDLINE, EMBASE, and PubMed databases for published studies and Web of Science, Wiley Online, and Science Direct databases for conference abstracts that had patient populations with non-small cell lung cancer and reported post-SABR radiologic features of FDG-PET or CT and radiomics from either FDG-PET or CT. Studies for inclusion were independently reviewed by 2 authors.

Results

Across 32 relevant studies, the incidence of LR was 13% (222/1726). On CT, certain gross radiologic appearances and kinetic features of changes in size, diameter, volume, or 3 consecutive rises in volume of masslike consolidation are suggestive of LR. **Particular regard should be made for the presence of any ≥3 high-risk features on CT or the individual high-risk features of enlarging opacity at ≥12 month's post-SABR as being highly suspicious of LR. On FDG-PET a relative reduction of <5% of maximum standardised uptake value (SUVmax) from baseline in the first 12 months or cut-offs of SUVmax >5 and SUVmean >3.44 after 12 months can indicate LR. There is limited evidence available to corroborate radiomic features suggestive of LR.

Conclusions

This research has identified common features of LR compared with radiation-induced lung injury, which may aid in early and accurate detection of LR post-SABR; further research is required to validate these findings.

Original languageEnglish
Pages (from-to)40-59
Number of pages20
JournalInternational Journal of Radiation Oncology Biology Physics
Volume113
Issue number1
Early online date12 Apr 2022
DOIs
Publication statusPublished - 01 May 2022
Externally publishedYes

Bibliographical note

Funding Information:
Disclosures: D.P. receives funding from the Ontario Institute for Cancer Research and has a U.S. patent: A Method for Analyzing a Three-Dimensional Computed Tomography Image, No. 61/896349 (no financial implications or licensing). E.H. receives research grant funding from AstraZeneca and has received honorarium from AstraZeneca. G.G.H. has received honorarium from AstraZeneca. H.G. has received honorarium from AstraZeneca. S.V. has received and still receives research funding from the National Health and Medical Research Council (NHMRC), the University of New South Wales, and the Medical Research Future Fund. S.V. has also received honorarium from AstraZeneca. S.V. is an associate editor of the Journal of Medical Imaging and Radiation Oncology and is a member of the editorial board of the Journal of Thoracic Oncology.

Publisher Copyright:
© 2021

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

ASJC Scopus subject areas

  • Radiation
  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Cancer Research

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