Diagnosis is made when someone who has worked with silica has chest computed tomography (CT) that shows distinctive patterns consistent with the disease. A chest x-ray can also be done to help diagnose silicosis. When imaging findings are unclear, samples of lung tissue can help confirm the diagnosis. How earlyRead More →
A sarcoma may appear as a painless lump under the skin, often on an arm or a leg. Sarcomas that begin in the abdomen may not cause signs or symptoms until they get very big. As the sarcoma grows bigger and presses on nearby organs, nerves, muscles, or blood vessels,Read More →
Doctors often use X-rays to diagnose fractures, but many early stress fractures are too small to appear on an X-ray. If an X-ray looks normal but symptoms suggest the presence of a stress fracture, your doctor may recommend another imaging test, such as an MRI scan. What does the beginningRead More →
X-ray diffraction (XRD) relies on the dual wave/particle nature of X-rays to obtain information about the structure of crystalline materials. … In materials with regular structure (i.e. crystalline), the scattered X-rays undergo constructive and destructive interference. This is the process of diffraction. What does a diffractometer measure? A diffractometer isRead More →
X-ray diffraction analysis (XRD) is a technique used in materials science to determine the crystallographic structure of a material. XRD works by irradiating a material with incident X-rays and then measuring the intensities and scattering angles of the X-rays that leave the material . Why do we use X-ray crystallography?Read More →
Imaging Studies Your doctor may order x-rays, magnetic resonance imaging (MRI) scans, and computerized tomography (CT) scans to help assess the problem. In this MRI scan, a herniated disk (arrow) is compressing the cauda equina. How do you rule out cauda equina syndrome? Magnetic resonance imaging (MRI): the best methodRead More →