https://cdn.shortpixel.ai/spai/q_lossy+ret_img/https://cosmosmagazine.com/wp-content/uploads/2021/12/Capture-trex111.jpg


Quote:

Along with a normal CT scan, the team also used a technique called dual-energy computed tomography (DECT). This scans the sample with X-rays at two different energy levels, giving information about tissue composition and disease processes invisible to a single-energy CT scan. For example, the CT scan of a portion of the jaw called the left dentary revealed thickening and a mass on its surface. Then the DECT detected an accumulation of fluorine within the mass. The researchers say that together, these indicate that the T-rex had tumefactive osteomyelitis, an infection of the bone.

https://cosmosmagazine.com/history/palaeontology/medical-researchers-find-bone-disease-in-t-rex-jaw-fossil/

Just what you would want to meet in a dark alley—a Tyrannosaurus Rex with a toothache!