Question

8. In nuclear medicine what is Scintimammography and how and when is this procedure performed? 9. What do the terms Image Intensifier Tube, Multifield Image Intensification and Flux Gain mean with respect to fluoroscopy? 10. What are the strengths and weaknesses of PET-CT imaging overall and how might PET-MRI be better for some types of imaging?

Answer 1

8) Scintimammography is a type of breast imaging test that is used to detect cancer cells in the breasts of some women who have had abnormal mammograms, or for those who have dense breast tissue, post-operative scar tissue or breast implants.

Nuclear medicine breast imaging may be appropriate for patients with:

Dense breast tissue

Large, palpable (able to be felt) abnormalities that cannot be imaged well with mammography or ultrasound

Breast implants

When multiple tumors are suspected

A lump at the surgical site after mastectomy since scar tissue may be difficult to distinguish from other tumors with other breast imaging exams

To check the axillary (underarm) lymph nodes to determine whether they contain cancer cells.

9) Image intensifier is a device that intensifies (or amplifies) low light level image to levels that can be seen with the human eye or detected by digital image sensors. They  collect the existing ambient light through the objective lens of the night vision device.

The multifield image intensifier is an electronic vacuum tube that converts the remnant beam to light, then to electrons, then back to light, increasing the light intensity in the process.

Flux gain Is the ratio of the number of light photons at the output phosphor to the number of photons at the input phosphor.

10)Strength :Clinical research has shown that in comparison to a PET scan alone, PET/CT technology provides new information that can alter a patient's treatment plan to better target the cancer in approximately one-third of the cases.

Weakness :Pregnant women should not undergo PET/CT scans because the radioactive tracers used may be dangerous to the baby. ... Before having a PET/CT scan, a diabetic patient's blood sugar level will be evaluated, and a glucose serum blood test might be administered.

An PET-MRI scan can be used when your organ shape or blood vessels are in abnormal state, whereas PET CTscans will be used to see your body's function.