Axial T1-weighted bilateral thigh MR images (IMAGE) Radiological Society of North America Caption Axial T1-weighted bilateral thigh MR images and magnified frames providing a closer look at the areas in lateral aspects of quadriceps femoris muscles (knee extensors) from two obese, female participants, aged 58 (A) and 62 years (B), respectively. In A, the thigh muscles on both sides demonstrate abundant fatty streaks, consistent with a high Goutallier grade of 45 for this participant, whose diet from the past 12 months consisted 68% of ultra-processed foods. In B, the thigh muscles show fewer fatty streaks as highlighted in the magnified image, consistent with a low Goutallier grade of 17 for this participant, whose diet contained only 36% ultra-processed foods. Credit Radiological Society of North Aurora (RSNA) and Zehra Akkaya, M.D. Usage Restrictions May use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.