1. Zaret BL, Strauss HW, Hurley PJ, Natarajan TK, Pitt B. A noninvasive scintigraphic method for detecting regional ventricular dysfunction in man. N Engl J Med 1971;284:1165-70.
2. Parker JA, Secker-Walker R, Hill R, Siegel BA, Potchen EJ. A new technique for the calculation of left ventricular ejection fraction. J Nucl Med 1972;13:649-51.
3. Lebowitz E, Greene MW, Fairchild R, Bradley-Moore PR, Atkins HL, Ansari AN, et al. Thallium-201 for medical use I. J Nucl Med 1975;16:151-5.
4. Strauss HW, Harrison K, Langan JK, Lebowitz E, Pitt B. Thallium-201 for myocardial imaging. Relation of thallium-201 to regional myocardial perfusion. Circulation 1975;51:641-5.
5. Goris ML, Daspit SG, McLaughlin P, Kriss JP. Interpolative background subtraction. J Nucl Med 1976;17:7.