RT Journal Article
SR Electronic
T1 Recognizing Pinhole Parallax Error for Accurate Localization of Thyroid and Parathyroid Disease
JF Journal of Nuclear Medicine Technology
JO J. Nucl. Med. Technol.
FD Society of Nuclear Medicine
SP 288
OP 289
DO 10.2967/jnmt.118.207928
VO 46
IS 3
A1 Ismet Sarikaya
A1 Zaina Al-Banna
A1 Ali Baqer
YR 2018
UL http://tech.snmjournals.org/content/46/3/288.abstract
AB Parallax error is a pitfall of pinhole scintigraphy that causes mislocalization of the findings. It is important to notice this error on pinhole thyroid and parathyroid scintigraphy and obtain additional images with a parallel-hole collimator to accurately determine the upper and lower margins of large goiters and nodules and the location of ectopic thyroid tissue and parathyroid adenomas. In this teaching case report, we revisit pinhole parallax error, present pinhole and SPECT/CT images of a patient with a large, hyperactive thyroid nodule, and review the literature and potential solutions to this important problem.