Disparate Technetium and Iodine Thyroid Scintigraphy
Jeffrey R. Garber, MD
J. Anthony Parker, MD PhD
August 26, 1994
The thyroid scan on the left shows a nodule with increased uptake in the
right lobe of the thyroid. This scintigram was performed on 12/7/82 with
Technetium-99m pertechnetate. The thyroid scan on the right shows a nodule
with decreased uptake in the same location. This scintigram was performed
on 12/20/82 with Iodine-123 (arrows
show the nodule, 90k bytes). The nodule can trap pertechnetate (and iodine),
but has lost the ability to organify iodine. The pertechnetate scintigram
performed at 20 minutes after injection reflects trapping; the iodine scintigram
performed at 24 hours requires both trapping and organification.
Pathology on the surgical specimen showed Micro-macro follicular
adenoma.
Click here to go to Joint
Program in Nuclear Medicine home page and Copyright notice.
J. Anthony Parker, MD PhD, Tony_Parker@bih.harvard.edu