Lung Scintiphoto by Means of Technetium MAA Kit

Abstract

Lungs are obviously most strongly influenced organs by respiration, because of their own movement.
^99mTc-MAAis easily obtained by only adding sterilized^99mTc-pertechnetate into the MAA vial containing MAA and stannous chloride in acetate buffer.
By injecting this^99mTc-MAA, multi-directional lung scintiphotos, that is, frontal, both laterals and posterior view of the lungs, are obtainable safely and rapidly, even during the breath holding, resulting in good clinical information by the better quality of the images.
Sixty-nine cases are subjected to study. Group I consists of 22 cases of lung cancer and other cancers which have invaded hilar lymph nodes. Group II, 16 cases of postoperative breast cancer to be examined radiation effect upon the apex. Group III, 23 cases of mitral stenosis, congenital heart disease and so on. Group IV, 8 cases of aortitis syndrome and others.
Exactly knowing the distribution of^99mTc-MAAperfusion in the lungs, elucidation of pathophysiology of these diseases is greatly supported.
In the Group II, “Apex View” is newly considered for better observation of apical blood flow. This technique is performed by placing the scinticainera head facing to the back of the patients posteriorly with 30°of inclination. Before and after irradiation therapy, this technique is applied to the investigation of a more innocuous method of irradiation to the supraclavicular region.