That depends:
- If You see straight paralell lines (shadows) one close to another (filling all the screen) You may see the antiscatter grid shadow. This could mean that the grid isn't moving or the exposure time is too short to move the grid. Try to use less current to increase exposure time and check if the grid mechanism is ok.
- If You see curved lines or repeating patterns that are visible if the image isn't 1:1 zoomed - it may be moire effect. It's the output of adding 3 spatial frequencies: grid density , scanning resolution and monitor resolution. Consult it with Your CR/DR service. Sometimes it's possible to add filters or change the parameters of image.
- If You see some lines through all the image (like scratches) something is wrong with CR reader. Consult service.
Christian Villarreal
Bones appear on x-rays because they are denser than soft tissues, allowing them to absorb more of the x-ray radiation and show up as white on the image.
solar flares appear as a dark spot
they are fast ,they are less expensive ,they use lower amount of radiation
Medical X-rays work by using high-energy electromagnetic radiation to penetrate the body and create images of internal structures. When X-rays pass through the body, they are absorbed at varying degrees by different tissues; denser tissues, like bones, absorb more X-rays and appear white on the film or digital image, while softer tissues, like muscles and organs, appear darker. A specialized detector captures the X-rays that exit the body, translating them into a visual representation for medical analysis. This process helps doctors diagnose fractures, infections, tumors, and other conditions.
X-rays will "Fog" photographic plates. That means the plates act as if 'exposed' to light. If the X-rays are intense enough, the plates will appear to be totally exposed.
Barium salt mainly Barium sulfate is good absorber of X-rays and help stomach to appear clear
On an x ray, empyema thoracis will appear as a cloudy or opaque ar
NO, tissue appears gray and bone appears white
Before digital imaging, x-rays were captured on film using photographic plates or films coated with a light-sensitive emulsion. When x-rays passed through the body, they would expose these films, creating a negative image that could then be developed in a darkroom. This analog process required careful handling and processing to ensure image quality and accuracy.
X-rays can penetrate the body and are absorbed differently by different tissues. Dense tissues like bones absorb more x-rays and appear white on the image, while softer tissues absorb fewer x-rays and appear gray. This contrast helps to visualize internal structures like bones, organs, and foreign objects inside the body.
More of the x-rays will be absorbed by the denser material of bones, so the areas where a bone is discontinuous (broken) will allow the x-rays to pass through, or at least to a greater extent. The x-rays darken a film, and on the negative image produced, the breaks will appear as darker than the lighter areas representing undamaged bone.