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Courtesy of Intermountain Medical Imaging, Boise,
A lung scan is a test that uses a radioactive tracer to look at the lungs. Areas of the lung that retain too much air show up as bright or "hot" spots on the pictures. Areas that are not receiving enough air show up as dark or "cold" spots.
Figure 1 shows normal blood flow in healthy lungs. Figure 2 shows
dark areas where blood clots (pulmonary emboli) are preventing normal blood
flow through the lungs.
ByHealthwise StaffPrimary Medical ReviewerAnne C. Poinier, MD - Internal MedicineSpecialist Medical ReviewerMyo Min Han, MD - Nuclear Medicine
Current as ofFebruary 19, 2016
Current as of:
February 19, 2016
Anne C. Poinier, MD - Internal Medicine & Myo Min Han, MD - Nuclear Medicine
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