[Diagnostic significance of electrocardiography and myocardial scintigraphy with 99m Tc-Sn-pyrophosphate and 99m Tc-Sn-phosphone in patients with stenocardia]. / Diagnosticheskaia znachimost' élektrokardiografii, stsintigrafi miokarda s 99mTc-Sn-pirofosfatom i 99mTc-Sn-fosfonom u bol'nykh so stenokardiei.

Altogether 123 angina patients were examined using electrocardiography and scintigraphy of the myocardium with two 99m Tc radiopharmaceutical complexes: pyrophosphate and phosphone. A comparative analysis of the results obtained with different methods of investigation before and after an attack of angina pectoris was made. The authors have shown some peculiarities of radionuclide distribution in the myocardium and the diagnostic value of each method of investigation in patients with different clinical forms of angina pectoris.

[Diagnostic possibilities of radionuclide methods of studying patients with stable and unstable angina pectoris]. / Diagnosticheskie vozmozhnosti radionuklidnykh metodov issledovaniia u bol'nykh so stabil'noi i nestabil'noi stenokardiei.

Myocardial radiocardiography and scintigraphy with 99mTc-pyrophosphate was performed in 58 patients with stable angina and 60 patients with unstable angina. In patients with stable angina, positive scintigrams were mostly recorded after anginal attacks. Their central hemodynamic parameters deteriorated progressively as angina increased in severity. Patients with unstable angina typically showed myocardial accumulation of the label that was unrelated to anginal attacks and recordable by direct-projection scintigraphy. The assessment of myocardial radiocardiographic and scintigraphic data allows one to differentiate between stable and unstable angina.