Clinical Utility of Masking in Planar and Single-Photon Emission Computed Tomography/Computed Tomography Lung Perfusion Imaging in the Presence of 99mTc-Macroaggregated Albumin Embolus

Ji Young Kim; Seo Young Kang; Byung Seok Moon; Bom Sahn Kim; Hai Jeon Yoon

doi:10.1007/s13139-025-00929-x

Clinical Utility of Masking in Planar and Single-Photon Emission Computed Tomography/Computed Tomography Lung Perfusion Imaging in the Presence of ^99mTc-Macroaggregated Albumin Embolus

Ji Young Kim
, Seo Young Kang
, Byung Seok Moon
, Bom Sahn Kim
, Hai Jeon Yoon

Department of Nuclear Medicine

Research output: Contribution to journal › Article › peer-review

Abstract

A 74-year-old male with lung cancer in right lower lobe underwent lung perfusion planar imaging and SPECT/CT scan for preoperative evaluation. A focal intense uptake artifact was shown on the initial scan, prompting a repeat scan 5 days later. A MAA embolus artifact can disrupt the analysis of radioactivity in each lung segment, potentially causing errors in postoperative residual lung function. Consequently, repeat imaging or correction may be necessary. When repeat images without MAA embolus were used for comparison, applying a mask to exclude the MAA embolus lesion provided reliable results, eliminating the need for further repeat imaging.

Original language	English
Pages (from-to)	479-481
Number of pages	3
Journal	Nuclear Medicine and Molecular Imaging
Volume	59
Issue number	6
DOIs	https://doi.org/10.1007/s13139-025-00929-x
State	Published - Dec 2025

Bibliographical note

Publisher Copyright:
© The Author(s), under exclusive licence to Korean Society of Nuclear Medicine 2025.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

Access to Document

10.1007/s13139-025-00929-x

Cite this

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title = "Clinical Utility of Masking in Planar and Single-Photon Emission Computed Tomography/Computed Tomography Lung Perfusion Imaging in the Presence of 99mTc-Macroaggregated Albumin Embolus",

abstract = "A 74-year-old male with lung cancer in right lower lobe underwent lung perfusion planar imaging and SPECT/CT scan for preoperative evaluation. A focal intense uptake artifact was shown on the initial scan, prompting a repeat scan 5 days later. A MAA embolus artifact can disrupt the analysis of radioactivity in each lung segment, potentially causing errors in postoperative residual lung function. Consequently, repeat imaging or correction may be necessary. When repeat images without MAA embolus were used for comparison, applying a mask to exclude the MAA embolus lesion provided reliable results, eliminating the need for further repeat imaging.",

author = "Kim, \{Ji Young\} and Kang, \{Seo Young\} and Moon, \{Byung Seok\} and Kim, \{Bom Sahn\} and Yoon, \{Hai Jeon\}",

note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive licence to Korean Society of Nuclear Medicine 2025.",

year = "2025",

month = dec,

doi = "10.1007/s13139-025-00929-x",

language = "English",

volume = "59",

pages = "479--481",

journal = "Nuclear Medicine and Molecular Imaging",

issn = "1869-3474",

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Clinical Utility of Masking in Planar and Single-Photon Emission Computed Tomography/Computed Tomography Lung Perfusion Imaging in the Presence of ^99mTc-Macroaggregated Albumin Embolus. / Kim, Ji Young; Kang, Seo Young; Moon, Byung Seok et al.
In: Nuclear Medicine and Molecular Imaging, Vol. 59, No. 6, 12.2025, p. 479-481.

Research output: Contribution to journal › Article › peer-review

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AU - Moon, Byung Seok

AU - Kim, Bom Sahn

AU - Yoon, Hai Jeon

PY - 2025/12

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N2 - A 74-year-old male with lung cancer in right lower lobe underwent lung perfusion planar imaging and SPECT/CT scan for preoperative evaluation. A focal intense uptake artifact was shown on the initial scan, prompting a repeat scan 5 days later. A MAA embolus artifact can disrupt the analysis of radioactivity in each lung segment, potentially causing errors in postoperative residual lung function. Consequently, repeat imaging or correction may be necessary. When repeat images without MAA embolus were used for comparison, applying a mask to exclude the MAA embolus lesion provided reliable results, eliminating the need for further repeat imaging.

AB - A 74-year-old male with lung cancer in right lower lobe underwent lung perfusion planar imaging and SPECT/CT scan for preoperative evaluation. A focal intense uptake artifact was shown on the initial scan, prompting a repeat scan 5 days later. A MAA embolus artifact can disrupt the analysis of radioactivity in each lung segment, potentially causing errors in postoperative residual lung function. Consequently, repeat imaging or correction may be necessary. When repeat images without MAA embolus were used for comparison, applying a mask to exclude the MAA embolus lesion provided reliable results, eliminating the need for further repeat imaging.

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