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Subdiaphragmatic activity-related artifacts in myocardial perfusion scintigraphy

Anja Strok

Anja Strok

Division of Nuclear Medicine, University Medical Centre LjubljanaLjubljana, Slovenia
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Strok, Anja
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Barbara Guzic Salobir

Barbara Guzic Salobir

Division of Nuclear Medicine, University Medical Centre LjubljanaLjubljana, Slovenia
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Salobir, Barbara Guzic
, 
Monika Stalc

Monika Stalc

  • Division of Nuclear Medicine, University Medical Centre LjubljanaLjubljana, Slovenia
  • Faculty of Medicine, University of LjubljanaLjubljana, Slovenia
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Stalc, Monika
 and 
Katja Zaletel

Katja Zaletel

  • Division of Nuclear Medicine, University Medical Centre LjubljanaLjubljana, Slovenia
  • Faculty of Medicine, University of LjubljanaLjubljana, Slovenia
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Zaletel, Katja
  
Sep 15, 2024
Subdiaphragmatic activity-related artifacts in myocardial perfusion scintigraphy's Cover Image
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Article Category: Review
Published Online: Sep 15, 2024
Page range: 313 - 319
Received: Jun 08, 2024
Accepted: Jun 21, 2024
DOI: https://doi.org/10.2478/raon-2024-0053
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© 2024 Anja Strok et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

FIGURE 1.

Interfering subdiaphragmatic activity (yellow arrow) on short and vertical long axis images of the left ventricle with (upper raw) and without attenuation correction (lower raw).
Interfering subdiaphragmatic activity (yellow arrow) on short and vertical long axis images of the left ventricle with (upper raw) and without attenuation correction (lower raw).

FIGURE 2.

An example of manually drawn regions of interests (ROIs) over the midportion of the inferior wall of the myocardium and the adjacent underlying abdominal regions on multiple projections on raw planar images of the stress study. After pixel counts were obtained for every ROI, the mean myocardial and extracardiac counts were used to calculate the ratio of myocardial to extracardiac activity (MYO:EXT ratio).
An example of manually drawn regions of interests (ROIs) over the midportion of the inferior wall of the myocardium and the adjacent underlying abdominal regions on multiple projections on raw planar images of the stress study. After pixel counts were obtained for every ROI, the mean myocardial and extracardiac counts were used to calculate the ratio of myocardial to extracardiac activity (MYO:EXT ratio).

FIGURE 3.

By administering carbonated water before imaging, carbon dioxide gas may additionally expand the stomach. The upper part of the stomach adjacent to the inferior wall of the heart is mainly filled with gas instead of water. By distending the stomach, we increase the distance between the gut and the heart, thereby reducing imaging artifacts (yellow arrow).
By administering carbonated water before imaging, carbon dioxide gas may additionally expand the stomach. The upper part of the stomach adjacent to the inferior wall of the heart is mainly filled with gas instead of water. By distending the stomach, we increase the distance between the gut and the heart, thereby reducing imaging artifacts (yellow arrow).
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English
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Journal Subjects:
Medicine, Clinical Medicine, Internal Medicine, Haematology, Oncology, Radiology
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