LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Radiomics analysis of amide proton transfer‐weighted and structural MR images for treatment response assessment in malignant gliomas

Photo from wikipedia

The purpose of this study was to evaluate the value of amide proton transfer‐weighted (APTw) MRI radiomic features for the differentiation of tumor recurrence from treatment effect in malignant gliomas.… Click to show full abstract

The purpose of this study was to evaluate the value of amide proton transfer‐weighted (APTw) MRI radiomic features for the differentiation of tumor recurrence from treatment effect in malignant gliomas. Eighty‐six patients who had suspected tumor recurrence after completion of chemoradiation or radiotherapy, and who had APTw‐MRI data acquired at 3 T, were retrospectively analyzed. Using a fluid‐attenuated inversion recovery (FLAIR) image‐based mask, radiomics analysis was applied to the processed APTw and structural MR images. A chi‐square automatic interaction detector decision tree was used for classification analysis. Models with and without APTw features were built using the same strategy. Tenfold cross‐validation was applied to obtain the overall classification performance of each model. Sixty patients were confirmed as having tumor recurrence, and the remainder were confirmed as having treatment effect, at median time points of 190 and 171 days after therapy, respectively. There were 525 radiomic features extracted from each of the processed APTw and structural MR images. Based on these, the APTw‐based model yielded the highest accuracy (86.0%) for the differentiation of tumor recurrence from treatment effect, compared with 74.4%, 76.7%, 83.7%, and 76.7% for T1w, T2w, FLAIR, and Gd‐T1w, respectively. Model classification accuracy was 82.6% when using the combined structural MR images (T1w, T2w, FLAIR, Gd‐T1w), and increased to 89.5% when using these structural plus APTw images. The corresponding sensitivity and specificity were 85.0% and 76.9% for the combination of structural MR images, and 85.0% and 100% after adding APTw image features. Adding APTw‐based radiomic features increased MRI accuracy in the assessment of the treatment response in post‐treatment malignant gliomas.

Keywords: analysis; amide proton; structural images; treatment; malignant gliomas

Journal Title: NMR in Biomedicine
Year Published: 2022

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.