Estimation of Chest Wall Attenuation of 123I Emissions in Substernal Goiter: A Phantom Study

Article Figures & Data

Download figure
Open in new tab
Download powerpoint
Download figure
Open in new tab
Download powerpoint
FIGURE 1.
Demonstration of counting of capsule of iodine without attenuator. Probe is 26 cm from capsule (equivalent to 24 cm from surface of phantom, when used, plus 2 cm from surface to capsule).
Download figure
Open in new tab
Download powerpoint
FIGURE 2.
Demonstration of counting of iodine capsule within standard neck phantom using thyroid probe. Probe is 24 cm from surface of phantom. Same position is used for patient studies.
Download figure
Open in new tab
Download powerpoint
FIGURE 3.
Demonstration of counting of iodine capsule attenuated by cadaver chest wall. Capsule is within sealed plastic bag below chest wall. Thyroid probe is 26 cm from capsule.

TABLE 1

Thyroid Probe Counts of 11.1-MBq Capsule of ¹²³I Without Attenuator, Within Neck Phantom, and Behind Cadaver Chest Wall