Cardiology · ⁹⁹ᵐTc-tetrofosmin · Beginner

Chest tightness walking uphill in a 63-year-old man

History

63-year-old man with 3 months of central chest tightness walking uphill, relieved by rest. Type 2 diabetes, hypertension, ex-smoker. Resting ECG normal; echocardiogram shows normal left ventricular size and function. Cannot exercise adequately because of knee osteoarthritis. Referred for regadenoson stress / rest ⁹⁹ᵐTc-tetrofosmin myocardial perfusion imaging (1-day protocol): is there ischaemia, and how much?

Step 1 · Stress and rest slices

Regadenoson stress and rest ⁹⁹ᵐTc-tetrofosmin SPECT: short-axis, vertical and horizontal long-axis slices, displayed at the same spatial scale.

What is the main perfusion finding?

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