intracoronary injections of 99mtc and 131i-labelled macroaggregated human serum albumin were performed ( 1 ) at rest , ( 2 ) during spontaneous angina , ( 3 ) after the administration of nitroglycerin and ( 4 ) during pacing-induced spasm and the resultant scans compared .
C0002962
angina
C0017887
nitroglycerin