Differentiating low- and high-proliferative soft tissue sarcomas using conventional imaging features and radiomics on MRI
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View abstract on PubMed
Summary
This summary is machine-generated.Radiomics and MRI imaging can differentiate soft tissue sarcomas based on proliferation. Features like heterogeneity and peritumoral edema help distinguish high- from low-proliferative tumors.
Area Of Science
- Oncology
- Radiology
- Medical Imaging
Background
- Soft-tissue sarcomas are rare tumors.
- Previous studies had limited cases and conventional imaging analysis.
- This study explored MRI-based radiomics and conventional imaging for differentiating tumor proliferation.
Purpose Of The Study
- To investigate if conventional imaging and radiomics features on MRI can differentiate low- and high-proliferative soft tissue sarcomas.
- To identify imaging biomarkers predictive of tumor proliferation.
Main Methods
- Retrospective analysis of 118 soft tissue sarcoma cases.
- Classification into high-proliferative (Ki-67 ≥ 20%) and low-proliferative (Ki-67 < 20%) groups.
- Extraction and comparison of radiomics and conventional MRI features (heterogeneity, edema, margins, ADC, AUC).
Main Results
- High-proliferative sarcomas showed higher prevalence of metastases and negative correlation with time to metastasis.
- Significant differences in intratumoral heterogeneity (T2w, CE-T1w), peritumoral enhancement, edema, and ill-defined margins between groups.
- Apparent Diffusion Coefficient (ADC) values and contrast dynamics (AUC) did not significantly differ.
Conclusions
- Radiomics and conventional MRI features can distinguish between low- and high-proliferative soft tissue sarcomas.
- Intratumoral heterogeneity and peritumoral characteristics are key indicators of proliferation.
- These imaging features can aid in non-invasively assessing tumor aggressiveness.
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