I hope this answers your question.
The other type of study is called a nuclear stress test. This test is typically ordered when there is a concern about impaired blood flow to the cardiac muscle, which could reflect a blockage in one of the coronary arteries that supply blood to the left ventricle. It’s done in two parts: after a small amount of a radioactive substance is injected, the first dose used to evaluate blood flow to the left ventricle while you are resting and relaxed (rest) and another dose used to evaluate blood flow to the left ventricle under conditions that simulate exercise (stress). If you can’t walk on a treadmill that increases in speed until you reach your specific maximum heart rate (based on your age), you will be injected with a medication that causes the coronary arteries to dilate which in turn increases blood flow. For both the rest and stress portions of the study, the heart is imaged; the injected radioactive substance demonstrating blood flow uptake to the various areas to the left ventricle. If there are "defects" (areas with decreased uptake) on the stress study not seen on the rest study, then there is concern for ischemia (diminished blood flow) to that territory. This is consistent with a significant blockage of a particular coronary artery god which you may need a stent. If you’ve had a heart attack in the past, the interpreting physician will see a defect on both the stress and rest images, indicating heart muscle that is no longer alive, but scarred (hence no blood flow).
I hope this answers your question!!
overexpress PSMA receptors and the radiolabeled PSMA ligand will bind to these receptors on prostrate cancer cells, with the energy released from decay of the attached radioactive isotope resulting in killing of the prostate cancer cell. Unfortunately, none of these agents are FDA approved for use in the US.
Hope this helps!
homeostasis functions, following destruction (or radioablation), an endocrinologist will prescribe thyroid hormone that the patient has to take for the rest of their life. The first few months, doses may change significantly as the right level of thyroid hormone needed varies with each person.
Hope this helps!
Typically, after a diagnosis of thyroid cancer, surgery is performed to removed the entire gland. Even in the hands of the best surgeon, there is often residual thyroid tissue remaining in the neck as surgeons are especially careful when operating in the neck due to multiple vascular and nerve structures in such a compact space. So, in order to "clean up" any
minute deposits of thyroid tissue, that can either be normal or cancerous, radioactive I-131 is given to kill or "ablate" any thyroid cells. Ablation is also helpful because it makes it easier to check if there is recurrence in the future by checking a protein in your blood called thyroglobulin, that is made by thyroid tissue. Since your gland will be removed and
ablation administered to destroy any remaining normal or cancer thyroid cells, a thyroglobulin level drawn from your blood several months later should be undetectable. If it is detectable, then there is concern that there is recurrent disease. A caveat to this is some people develop antibodies to thyroglobulin which makes a blood levels of the protein
unreliable. As such, follow-up is based solely on imaging (neck ultrasound which is done even if a person doesn’t make antibodies to thyroglobulin, a I-123 iodine scan, which you may get before ablation as well to assess how much residual tissue is in your neck, and sometimes a PET/CT if warranted). The size and type of thyroid cancer you have will determine the dose you receive.
People hear "radioactive" and are immediately afraid something weird will happen to them or they it’s dangerous. This is one of the safest, most effective treatments for thyroid cancer; so much so that it has been essentially unchanged and performed for over 70 years.
I hope this answers your question!
the radiation that irradiated the prostrate tissue over time.