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M dwarf main-sequence stars pass through the instability strip as shown above.
Lung Perfusion Scan
A diagnostic test that uses a radioactive substance to evaluate the circulation of blood in the lungs.
Radioactive Contrast Medium
A type of contrast agent used in medical imaging that contains radioactive materials to improve the visibility of internal organs or structures.
Pulmonary Blood Flow
involves the circulation of blood from the heart to the lungs and back, facilitating oxygenation of the blood.
Chronic Bronchitis
A long-term inflammation of the bronchial tubes, leading to coughing, phlegm, and breathing difficulties, often associated with smoking.
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