Fig. 2.

The effect of strenuous arm exercise. Maximum intensity projections from three representative patients who received [¹⁸F]methylcholine while already resting on the scanner (a), in a separate injection room followed by a short walk to the scanner (b) and while performing strenuous exercise with the right arm (c). Note the markedly increased uptake in the exercised biceps and the muscles used to retain body position (arrows) and intercostal muscles used for breathing