Figure 109b

Normal 201Tl study showing homogenous distribution of the radiotracer in the anterior (ANT), 45 degrees LAO and 70 degrees LAO projections. Images acquired early are depicted in the top row, while images acquired 3 to 4 h later are illustrated in the bottom row. It should be noted that reduced activity in the region of the apex on the ANT view is consistent with normal apical thinning. Also, activity seems to decrease from apex to base related to the increase distance from the gamma camera crystal between apex and base.

G Pohost, R O'Rourke (eds): Principles and Practice of Cardiac Imaging. Boston, Little Brown, 1991:196.