Qualitative and quantitative assessment of the effect of respiratory movement on right lung tumors in PET/CT images
For specific clinical diagnoses, positron emission tomography (PET) can detect more sites of disease than conventional anatomical imaging such as x-ray computed tomography (CT) or magnetic resonance imaging (MRI). Interpretation of PET can be difficult; however, PET images have few anatomical landma...
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Nuclear Science and Technology Research Institute
2020-05-01
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| Series: | مجله علوم و فنون هستهای |
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| Online Access: | https://jonsat.nstri.ir/article_1098_34dd5b485fa1e76add4d274ee174f36a.pdf |
| _version_ | 1797835413632581632 |
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| author | F. Gholami M. Shamsaei-Zafarghandi E. Alibeigi M. Sanei B. Teymourian |
| author_facet | F. Gholami M. Shamsaei-Zafarghandi E. Alibeigi M. Sanei B. Teymourian |
| author_sort | F. Gholami |
| collection | DOAJ |
| description | For specific clinical diagnoses, positron emission tomography (PET) can detect more sites of disease than conventional anatomical imaging such as x-ray computed tomography (CT) or magnetic resonance imaging (MRI). Interpretation of PET can be difficult; however, PET images have few anatomical landmarks for determining the location of abnormal findings. Combining PET and CT images acquired sequentially on their separate devices provides a partial solution to this problem. In earlier years PET/CT has an important role in detecting tumors, planning radiation treatment and evaluating response to therapy. Differences in PET and CT imaging time, especially in the lung region, cause artifacts and errors in estimating tumor uptake and volume determination. The purpose of this paper was to investigate qualitative and quantitative errors due to respiratory artifacts on tumors of the lung. For this purpose, the XCAT phantom was used to simulate respiratory motion and also, STIR was used to apply attenuation maps on reconstruction of PET images. The evaluation of results was performed by ROI and SULmax parameters. The images from various methods of attenuation correction, indicated that respiratory motion on regions above the lungs is poorly. The best method is the Initial review of PET images to obtain the size and location of the tumor and then make a decision about the appropriate respiratory phase based on the size and location of the tumor for attenuation correction of PET images. |
| first_indexed | 2024-04-09T14:52:29Z |
| format | Article |
| id | doaj.art-d3aec0255c5b4c9982211ed108669a32 |
| institution | Directory Open Access Journal |
| issn | 1735-1871 2676-5861 |
| language | fas |
| last_indexed | 2024-04-09T14:52:29Z |
| publishDate | 2020-05-01 |
| publisher | Nuclear Science and Technology Research Institute |
| record_format | Article |
| series | مجله علوم و فنون هستهای |
| spelling | doaj.art-d3aec0255c5b4c9982211ed108669a322023-05-02T09:08:16ZfasNuclear Science and Technology Research Instituteمجله علوم و فنون هستهای1735-18712676-58612020-05-01411818810.24200/nst.2020.10981098Qualitative and quantitative assessment of the effect of respiratory movement on right lung tumors in PET/CT imagesF. Gholami0M. Shamsaei-Zafarghandi1E. Alibeigi2M. Sanei3B. Teymourian4Medical Radiation, Faculty of Energy Engineering and Physics, Amirkabir University of Technology, P.O. Box: 4413-15875, Tehran, IranMedical Radiation, Faculty of Energy Engineering and Physics, Amirkabir University of Technology, P.O. Box: 4413-15875, Tehran, IranPhysics and Accelerators Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 14155-1339, Tehran-IranDepartment of Radiotherapy, School of Medicine, Iran University of Medical Sciences, P.O. Box: 14665-354, Tehran, IranMedical Radiation, Faculty of Energy Engineering and Physics, Amirkabir University of Technology, P.O. Box: 4413-15875, Tehran, IranFor specific clinical diagnoses, positron emission tomography (PET) can detect more sites of disease than conventional anatomical imaging such as x-ray computed tomography (CT) or magnetic resonance imaging (MRI). Interpretation of PET can be difficult; however, PET images have few anatomical landmarks for determining the location of abnormal findings. Combining PET and CT images acquired sequentially on their separate devices provides a partial solution to this problem. In earlier years PET/CT has an important role in detecting tumors, planning radiation treatment and evaluating response to therapy. Differences in PET and CT imaging time, especially in the lung region, cause artifacts and errors in estimating tumor uptake and volume determination. The purpose of this paper was to investigate qualitative and quantitative errors due to respiratory artifacts on tumors of the lung. For this purpose, the XCAT phantom was used to simulate respiratory motion and also, STIR was used to apply attenuation maps on reconstruction of PET images. The evaluation of results was performed by ROI and SULmax parameters. The images from various methods of attenuation correction, indicated that respiratory motion on regions above the lungs is poorly. The best method is the Initial review of PET images to obtain the size and location of the tumor and then make a decision about the appropriate respiratory phase based on the size and location of the tumor for attenuation correction of PET images.https://jonsat.nstri.ir/article_1098_34dd5b485fa1e76add4d274ee174f36a.pdfpetctxcat phantomroistirsulmax |
| spellingShingle | F. Gholami M. Shamsaei-Zafarghandi E. Alibeigi M. Sanei B. Teymourian Qualitative and quantitative assessment of the effect of respiratory movement on right lung tumors in PET/CT images مجله علوم و فنون هستهای pet ct xcat phantom roi stir sulmax |
| title | Qualitative and quantitative assessment of the effect of respiratory
movement on right lung tumors in PET/CT images |
| title_full | Qualitative and quantitative assessment of the effect of respiratory
movement on right lung tumors in PET/CT images |
| title_fullStr | Qualitative and quantitative assessment of the effect of respiratory
movement on right lung tumors in PET/CT images |
| title_full_unstemmed | Qualitative and quantitative assessment of the effect of respiratory
movement on right lung tumors in PET/CT images |
| title_short | Qualitative and quantitative assessment of the effect of respiratory
movement on right lung tumors in PET/CT images |
| title_sort | qualitative and quantitative assessment of the effect of respiratory movement on right lung tumors in pet ct images |
| topic | pet ct xcat phantom roi stir sulmax |
| url | https://jonsat.nstri.ir/article_1098_34dd5b485fa1e76add4d274ee174f36a.pdf |
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