In an abnormal technetium heart scan, hot spots reveal damage to the heart. The larger the hot spots, the poorer the patient's prognosis.
I'm not 100 percent sure, but I believe that the "dark spots", often called hot spots, refer to abnormal amounts of radionuclide in the bone, determining that it is infected or diseased. Though the previous person isn't completely wrong, it really depends on how the images are displayed. If there is a white background, anything dark = increase tracer uptake, which could be a multitude of things, from trauma (bruises), to fractures, to cancer. Other scans are performed to distinguish between the many possibilities. Basically the premise of a bone scan is to image the physiology of bones. The drug used for the scan is what your body uses to repair bones. Bones are constantly under repair due to old cells dying, and new cells taking their place so that is why the whole skeleton shows up. So, when there is an increase in the repair of bone, it wills how up brighter on the scan (if black background, it will be more white, and if white background, it will be more black). Hope that answers your question a tad better.
MRI
Black spots on a bone scan may indicate areas of increased bone activity or hot spots, which can be caused by conditions such as fractures, infection, inflammation, or bone tumors. These areas typically show up as dark areas on the scan due to higher uptake of the radioactive tracer used in the scan.
It is not possible for a CAT scan to not be visible to a surgeon or radiologist if it has been performed correctly. A CAT scan provides detailed images of the internal structures of the body, including bones, which can be interpreted by medical professionals for diagnosis and treatment planning. If there is an issue with visibility, it may be due to technical factors or the need for clarification from the radiologist.
Get a Bone Density Scan.
You go for CAT scan for study of bones and you go for MRI for study of organs.
White spots on a bone nuclear medicine scan of the foot can indicate areas of increased bone activity, which may be suggestive of inflammation, infection, or bone injury. Further evaluation by a healthcare provider is recommended to determine the underlying cause of these white spots.
Yes. The ultrasound at five weeks will show the yolk sac. The fetus may or may not be visible yet as a small tube shape. By seven to eight weeks, the scan will show a little triangular shape embryo with the body cavities visible, and a beating heart.
The scan port is usually located under the dash, near the steering column. It may be visible, or behind a small cover that can be removed.
White spots on a neck CT scan can indicate various conditions, such as lymphadenopathy (enlarged lymph nodes), infections, or tumors. These spots may represent areas of increased density due to fluid, inflammation, or abnormal growths. The specific significance of the white spots depends on their size, shape, and location, as well as the clinical context and symptoms of the patient. Further evaluation, including additional imaging or biopsy, may be necessary to determine the exact cause.
Dark spots on a bone scan in painful areas can indicate increased bone activity, which may suggest inflammation and arthritis. However, further evaluation by a healthcare professional, such as an orthopedic specialist or rheumatologist, is needed to confirm the diagnosis and determine the appropriate treatment.