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Delta radiomics: a systematic review.

Valerio Nardone1, Alfonso Reginelli2, Roberta Grassi1

  • 1Department of Precision Medicine, University of Campania "L. Vanvitelli", 80138, Naples, Italy.

La Radiologia Medica
|December 5, 2021
PubMed
Summary
This summary is machine-generated.

Delta radiomics, analyzing changes in medical imaging features over time, shows promise in oncology for diagnosis and treatment prediction. However, current studies are of low quality, limiting robust clinical conclusions and requiring further validation.

Keywords:
Delta radiomicsMeta-analysisOncologyPrecision medicineRadiomicsRadiotherapyTexture analysis

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Area of Science:

  • Radiology
  • Medical Imaging Analysis
  • Oncology

Background:

  • Radiomics extracts quantitative imaging features correlated with biological and clinical data.
  • Delta radiomics analyzes feature variations across different time points, typically pre- and post-therapy.
  • This systematic review focuses on various delta radiomics methodologies.

Purpose of the Study:

  • To systematically review and analyze different delta radiomics approaches.
  • To assess the current state of research in delta radiomics.

Main Methods:

  • A systematic literature search was conducted in Embase, PubMed, and ScienceDirect.
  • Keywords included "radiomics", "texture", and "delta" (free text and MeSH terms).
  • Study quality was assessed using QUADAS-2 and the RQS tool.

Main Results:

  • Forty-eight studies were included, covering various cancer types like lung, rectal, and gastrointestinal malignancies.
  • The median Research Quality Score (RQS) was low (25%), with over 50% of studies scoring below 25%.
  • Cancer types included lung (25%), gastrointestinal (14.6%), rectal (12.5%), and head and neck (12.5%).

Conclusions:

  • Delta radiomics demonstrates potential for differential diagnosis, prognosis, treatment response prediction, and side effect evaluation in oncology.
  • The overall low quality of included studies leads to heterogeneous, non-robust, and non-replicable conclusions.
  • Further prospective, multicenter studies are essential for the clinical validation of delta radiomics.