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Recognizing Pinhole Parallax Error for Accurate Localization of Thyroid and Parathyroid Disease

Ismet Sarikaya, Zaina Al-Banna and Ali Baqer
Journal of Nuclear Medicine Technology September 2018, 46 (3) 288-289; DOI: https://doi.org/10.2967/jnmt.118.207928

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Figures

  • FIGURE 1.
    FIGURE 1.

    99mTc-pertechnetate anterior (ANT) pinhole image of thyroid gland with marker at suprasternal notch (SSN) reveals large, hyperactive nodule in left lobe. Nodule shows cold areas laterally, likely because of degeneration or necrosis. Remainder of thyroid gland is suppressed, with only mild activity seen in right lobe. Lower margin of this nodule is far above suprasternal notch.

  • FIGURE 2.
    FIGURE 2.

    Selected 99mTc-pertechnetate sagittal CT, SPECT, and SPECT/CT images of thyroid gland show that lower margin of left thyroid nodule is at level of suprasternal notch. Arrow indicates upper margin of sternum.

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