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Case Reports
. 2023 Apr-Jun;38(2):151-153.
doi: 10.4103/ijnm.ijnm_182_22. Epub 2023 Jun 8.

Artifactual Hot Spots on Technetium-99m Macroaggregated Albumin Perfusion Lung Scan

Chaimae Sebbar  1 , Soufiane Hiroual  1 , Nathalie Kouassi  1 , Mohamed Aziz Bsiss  1 , Aboubaker Matrane  1
Affiliations
Case Reports

Artifactual Hot Spots on Technetium-99m Macroaggregated Albumin Perfusion Lung Scan

Chaimae Sebbar et al. Indian J Nucl Med. 2023 Apr-Jun.

Abstract

A 40-year-old male patient with pulmonary tuberculosis was subjected to a perfusion lung scan to rule out pulmonary embolism. Administration of technetium-99m macroaggregated albumin through preexisting venous access resulted in multiple round hot spots in both pulmonary fields. This finding was interpreted as an artifact caused by injection through preexisting venous access.

Keywords: Artifact; pulmonary hot spots; technetium-99m macroaggregated albumin lung scan.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
The planar images of 99mTc–MAA lung perfusion scan show multiple hot spots in both pulmonary fields. 99mTc–MAA: Technetium-99m macroaggregated albumin
Figure 2
Figure 2
SPECT-CT images show a heterogeneous distribution of the radiotracer on both lung fields with a hot spot adjacent to a perfusion defect. SPECT-CT: Single-photon emission computed tomography–computed tomography
See this image and copyright information in PMC

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