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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Clin Transl Imaging. 2017 Sep 11;5(5):473–485. doi: 10.1007/s40336-017-0245-8

Figure 10. Gastric mucosa. Also present: Thyroid, salivary glands, kidney.

Figure 10

A 78-year-old male with hepatocellular carcinoma and no prior radioembolization was injected with 99mTc-MAA via right groin access into the right hepatic artery and was imaged 109 minutes after injection. Calculated lung shunt fraction was 16%. He did not undergo 90Y-radioembolization because of extensive portal venous thrombus identified during angiography.

Axial, coronal, and MIP SPECT (Row A), axial and coronal fused SPECT/CT (Row B), axial and coronal CT (Row C), and anterior planar (D) images demonstrate radiotracer uptake within the gastric mucosa and not the serosa, as well as in the thyroid and salivary glands, consistent with a pertechnetate distribution. This case also demonstrates radiotracer uptake in the spleen, which, similar to but less commonly seen than the renal cortex, is hypothesized to relate to proteolytic breakdown of MAA into smaller aggregates, which may be subsequently cleared by the reticuloendotheliar system.