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Variation of Contrast Values for Myocardial Perfusion Imaging in Single-photon Emission Computed Tomography/Computed Tomography Hybrid Systems with Different Correction Methods
Single-photon emission computed tomography/computed tomography (SPECT/CT) hybrid systems have the advantage of performing various scans using the same imaging setting. Absorption and scattering of the gamma rays by the patient's body significantly affect images obtained from scintigraphy, espec...
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| Published in: | Journal of clinical imaging science 2020-09, Vol.10, p.58-58, Article 58 |
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| creator | Tantawy, Hazem M Abdelhafez, Yasser G Helal, Nadia L Saad, Ibrahim E |
| description | Single-photon emission computed tomography/computed tomography (SPECT/CT) hybrid systems have the advantage of performing various scans using the same imaging setting. Absorption and scattering of the gamma rays by the patient's body significantly affect images obtained from scintigraphy, especially in myocardial perfusion imaging. An important parameter for image quality in SPECT is image contrast which is defined as the difference in density between regions of the image corresponding to different levels of radioactive uptake in the patient. The objective of the study was to evaluate the influence of applying different correction methods on image contrast of myocardial SPECT/CT images.
A total of 114 patients, 43 females and 71 males, patient's raw data were processed and analyzed using attenuation correction (AC), scatter correction (SC), both attenuation and scatter correction together (ACSC), and no correction (NC). The short axis (coronal) slices resulted from the raw data reconstruction were chosen to perform the processing for hot and cold spheres for contrast values measurement. Statistical analysis was made for the measured contrast values for AC, SC, ACSC, and NC to determine the best image contrast.
When applying SC alone, it yields better contrast value (0.834), compared to AC (0.677) and ACSC (0.739). Both ACSC and AC had better image contrast compared to NC (0.592).
The intercomparison study between the correction conditions indicates that the counts in SPECT/ CT are highly affected by all correction methods. The image contrast has been significantly improved by using SC, AC, and ACSC when compared with the NC image. Furthermore, SC is superior in the image contrast than the other correction conditions in the reconstruction of SPECT/CT MPI. |
| doi_str_mv | 10.25259/JCIS_123_2020 |
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A total of 114 patients, 43 females and 71 males, patient's raw data were processed and analyzed using attenuation correction (AC), scatter correction (SC), both attenuation and scatter correction together (ACSC), and no correction (NC). The short axis (coronal) slices resulted from the raw data reconstruction were chosen to perform the processing for hot and cold spheres for contrast values measurement. Statistical analysis was made for the measured contrast values for AC, SC, ACSC, and NC to determine the best image contrast.
When applying SC alone, it yields better contrast value (0.834), compared to AC (0.677) and ACSC (0.739). Both ACSC and AC had better image contrast compared to NC (0.592).
The intercomparison study between the correction conditions indicates that the counts in SPECT/ CT are highly affected by all correction methods. The image contrast has been significantly improved by using SC, AC, and ACSC when compared with the NC image. Furthermore, SC is superior in the image contrast than the other correction conditions in the reconstruction of SPECT/CT MPI.</description><identifier>ISSN: 2156-7514</identifier><identifier>EISSN: 2156-5597</identifier><identifier>DOI: 10.25259/JCIS_123_2020</identifier><identifier>PMID: 33024613</identifier><language>eng</language><publisher>United States: Scientific Scholar</publisher><subject>Original Research</subject><ispartof>Journal of clinical imaging science, 2020-09, Vol.10, p.58-58, Article 58</ispartof><rights>2020 Published by Scientific Scholar on behalf of Journal of Clinical Imaging Science.</rights><rights>2020 Published by Scientific Scholar on behalf of Journal of Clinical Imaging Science 2020 Journal of Clinical Imaging Science</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c345t-b9985db96a9bf70aeaa1babebc48d29de4e3a84fa1cacf86712b9b90a102861c3</cites><orcidid>0000-0002-5478-4600</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7533088/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7533088/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,315,733,786,790,891,27957,27958,53827,53829</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33024613$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tantawy, Hazem M</creatorcontrib><creatorcontrib>Abdelhafez, Yasser G</creatorcontrib><creatorcontrib>Helal, Nadia L</creatorcontrib><creatorcontrib>Saad, Ibrahim E</creatorcontrib><title>Variation of Contrast Values for Myocardial Perfusion Imaging in Single-photon Emission Computed Tomography/Computed Tomography Hybrid Systems with Different Correction Methods</title><title>Journal of clinical imaging science</title><addtitle>J Clin Imaging Sci</addtitle><description>Single-photon emission computed tomography/computed tomography (SPECT/CT) hybrid systems have the advantage of performing various scans using the same imaging setting. Absorption and scattering of the gamma rays by the patient's body significantly affect images obtained from scintigraphy, especially in myocardial perfusion imaging. An important parameter for image quality in SPECT is image contrast which is defined as the difference in density between regions of the image corresponding to different levels of radioactive uptake in the patient. The objective of the study was to evaluate the influence of applying different correction methods on image contrast of myocardial SPECT/CT images.
A total of 114 patients, 43 females and 71 males, patient's raw data were processed and analyzed using attenuation correction (AC), scatter correction (SC), both attenuation and scatter correction together (ACSC), and no correction (NC). The short axis (coronal) slices resulted from the raw data reconstruction were chosen to perform the processing for hot and cold spheres for contrast values measurement. Statistical analysis was made for the measured contrast values for AC, SC, ACSC, and NC to determine the best image contrast.
When applying SC alone, it yields better contrast value (0.834), compared to AC (0.677) and ACSC (0.739). Both ACSC and AC had better image contrast compared to NC (0.592).
The intercomparison study between the correction conditions indicates that the counts in SPECT/ CT are highly affected by all correction methods. The image contrast has been significantly improved by using SC, AC, and ACSC when compared with the NC image. Furthermore, SC is superior in the image contrast than the other correction conditions in the reconstruction of SPECT/CT MPI.</description><subject>Original Research</subject><issn>2156-7514</issn><issn>2156-5597</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNptkUFv1DAQhSMEolXplSPykUta27GT-IKEQqGLWoG0pVdr7NgboyQOtgPKv-pPbLpdKirhy1iez29G72XZW4LPKKdcnH9tNltJaCEppvhFdkwJL3PORfXycK84YUfZaYw_8XqYYCXmr7OjosCUlaQ4zu5uIThIzo_IW9T4MQWICd1CP5uIrA_oevEaQuugR99NsHN8YDcD7Ny4Q25E27X2Jp86n9bGxeDinmj8MM3JtOjGD34XYOqW8_-8octFBdei7RKTGSL641KHPjlrTTBjWlVCMHq_3rVJnW_jm-yVhT6a00M9yX58vrhpLvOrb182zcerXBeMp1wJUfNWiRKEshUGA0AUKKM0q1sqWsNMATWzQDRoW5cVoUoogYFgWpdEFyfZh0fdaVaDabV5cKaXU3ADhEV6cPJ5Z3Sd3PnfsuKru3W9Crw_CAT_azUzydUabfoeRuPnKCljgtSE7NGzR1QHH2Mw9mkMwXKftHyW9Prh3b_LPeF_cy3uAT9Kq0E</recordid><startdate>20200925</startdate><enddate>20200925</enddate><creator>Tantawy, Hazem M</creator><creator>Abdelhafez, Yasser G</creator><creator>Helal, Nadia L</creator><creator>Saad, Ibrahim E</creator><general>Scientific Scholar</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-5478-4600</orcidid></search><sort><creationdate>20200925</creationdate><title>Variation of Contrast Values for Myocardial Perfusion Imaging in Single-photon Emission Computed Tomography/Computed Tomography Hybrid Systems with Different Correction Methods</title><author>Tantawy, Hazem M ; Abdelhafez, Yasser G ; Helal, Nadia L ; Saad, Ibrahim E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c345t-b9985db96a9bf70aeaa1babebc48d29de4e3a84fa1cacf86712b9b90a102861c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Original Research</topic><toplevel>online_resources</toplevel><creatorcontrib>Tantawy, Hazem M</creatorcontrib><creatorcontrib>Abdelhafez, Yasser G</creatorcontrib><creatorcontrib>Helal, Nadia L</creatorcontrib><creatorcontrib>Saad, Ibrahim E</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Journal of clinical imaging science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tantawy, Hazem M</au><au>Abdelhafez, Yasser G</au><au>Helal, Nadia L</au><au>Saad, Ibrahim E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Variation of Contrast Values for Myocardial Perfusion Imaging in Single-photon Emission Computed Tomography/Computed Tomography Hybrid Systems with Different Correction Methods</atitle><jtitle>Journal of clinical imaging science</jtitle><addtitle>J Clin Imaging Sci</addtitle><date>2020-09-25</date><risdate>2020</risdate><volume>10</volume><spage>58</spage><epage>58</epage><pages>58-58</pages><artnum>58</artnum><issn>2156-7514</issn><eissn>2156-5597</eissn><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Single-photon emission computed tomography/computed tomography (SPECT/CT) hybrid systems have the advantage of performing various scans using the same imaging setting. Absorption and scattering of the gamma rays by the patient's body significantly affect images obtained from scintigraphy, especially in myocardial perfusion imaging. An important parameter for image quality in SPECT is image contrast which is defined as the difference in density between regions of the image corresponding to different levels of radioactive uptake in the patient. The objective of the study was to evaluate the influence of applying different correction methods on image contrast of myocardial SPECT/CT images.
A total of 114 patients, 43 females and 71 males, patient's raw data were processed and analyzed using attenuation correction (AC), scatter correction (SC), both attenuation and scatter correction together (ACSC), and no correction (NC). The short axis (coronal) slices resulted from the raw data reconstruction were chosen to perform the processing for hot and cold spheres for contrast values measurement. Statistical analysis was made for the measured contrast values for AC, SC, ACSC, and NC to determine the best image contrast.
When applying SC alone, it yields better contrast value (0.834), compared to AC (0.677) and ACSC (0.739). Both ACSC and AC had better image contrast compared to NC (0.592).
The intercomparison study between the correction conditions indicates that the counts in SPECT/ CT are highly affected by all correction methods. The image contrast has been significantly improved by using SC, AC, and ACSC when compared with the NC image. Furthermore, SC is superior in the image contrast than the other correction conditions in the reconstruction of SPECT/CT MPI.</abstract><cop>United States</cop><pub>Scientific Scholar</pub><pmid>33024613</pmid><doi>10.25259/JCIS_123_2020</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-5478-4600</orcidid><oa>free_for_read</oa></addata></record> |
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| title | Variation of Contrast Values for Myocardial Perfusion Imaging in Single-photon Emission Computed Tomography/Computed Tomography Hybrid Systems with Different Correction Methods |
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