A Comparative Study of Electrocardiogram Multi-segment Reconstruction and Dual Source Computed Tomography Using a Computer Controlled Coronary Phantom
Currently, there are two main methods for improving temporal resolution of coronary computed tomography (CT): electrocardiogram-gated multi-segment reconstruction (EMR) and dual source scanning using dual source CT (DSCT). We developed a motion phantom system for image quality assessment of cardiac...
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| Veröffentlicht in: | Japanese Journal of Radiological Technology 2011/08/22, Vol.67(8), pp.880-887 |
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| container_title | Japanese Journal of Radiological Technology |
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| creator | Ohashi, Kazuya Ichikawa, Katsuhiro Higashide, Ryo Kunitomo, Hirosi |
| description | Currently, there are two main methods for improving temporal resolution of coronary computed tomography (CT): electrocardiogram-gated multi-segment reconstruction (EMR) and dual source scanning using dual source CT (DSCT). We developed a motion phantom system for image quality assessment of cardiac CT to evaluate these two methods. This phantom system was designed to move an object at arbitrary speeds during a desired phase range in cyclic motion. By using this system, we obtained coronary CT mode images for motion objects like coronary arteries. We investigated the difference in motion artifacts between EMR and the DSCT using a 3-mm-diameter acrylic rod resembling the coronary artery. EMR was evaluated using 16-row multi-slice CT (16MSCT). To evaluate the image quality, we examined the degree of motion artifacts by analyzing the profiles around the rod and the displacement of a peak pixel in the rod image. In the 16MSCT, remarkable increases of artifacts and displacement were caused by the EMR. In contrast, the DSCT presented excellent images with fewer artifacts. The results showed the validity of DSCT to improve true temporal resolution. |
| doi_str_mv | 10.6009/jjrt.67.880 |
| format | Article |
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J. Radiol. Technol.</addtitle><description>Currently, there are two main methods for improving temporal resolution of coronary computed tomography (CT): electrocardiogram-gated multi-segment reconstruction (EMR) and dual source scanning using dual source CT (DSCT). We developed a motion phantom system for image quality assessment of cardiac CT to evaluate these two methods. This phantom system was designed to move an object at arbitrary speeds during a desired phase range in cyclic motion. By using this system, we obtained coronary CT mode images for motion objects like coronary arteries. We investigated the difference in motion artifacts between EMR and the DSCT using a 3-mm-diameter acrylic rod resembling the coronary artery. EMR was evaluated using 16-row multi-slice CT (16MSCT). To evaluate the image quality, we examined the degree of motion artifacts by analyzing the profiles around the rod and the displacement of a peak pixel in the rod image. In the 16MSCT, remarkable increases of artifacts and displacement were caused by the EMR. In contrast, the DSCT presented excellent images with fewer artifacts. The results showed the validity of DSCT to improve true temporal resolution.</description><subject>computed tomography (CT)</subject><subject>Coronary Angiography - methods</subject><subject>coronary CT</subject><subject>dual source CT (DSCT)</subject><subject>Electrocardiography</subject><subject>Image Processing, Computer-Assisted - methods</subject><subject>Phantoms, Imaging</subject><subject>temporal resolution</subject><subject>temporal sensitivity profile (TSP)</subject><subject>Tomography, X-Ray Computed - methods</subject><issn>0369-4305</issn><issn>1881-4883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkMFu2zAMhoWhwxKkOfU-6D44kyLHkm8LsmwdkKFD054NSqYTB7YUSHKBvMied0qzpheSID_-JH5C7jibFYyVXw8HH2eFnCnFPpAxV4pnuVLihoyZKMosF2wxItMQWs0Snlos_0RGc66KcpHzMfm7pCvXH8FDbF-QbuNQn6hr6LpDE70z4OvW7Tz09PfQxTYLuOvRRvqIxtkQ_WBi6ywFW9PvA3R06wZv8FVziFjTJ9ef14_7E30Ord1ReJv5VNh0ousStnLeWfAn-mcPNrr-lnxsoAs4_Z8n5PnH-ml1n20efv5aLTeZmSvJsjqXULAy11qCYDpHKBdCCdFALbkxgs3lfIEATGJpQGrNAZFDUyihpdRGTMiXi67xLgSPTXX0bZ8eqTirzgZXZ4OrQlbJ4ER_vtDHQfdYX9k3OxPw7QIcQoQdXgHwsTUdvotdQtK8jswefIVW_AMd4ZLs</recordid><startdate>2011</startdate><enddate>2011</enddate><creator>Ohashi, Kazuya</creator><creator>Ichikawa, Katsuhiro</creator><creator>Higashide, Ryo</creator><creator>Kunitomo, Hirosi</creator><general>Japanese Society of Radiological Technology</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2011</creationdate><title>A Comparative Study of Electrocardiogram Multi-segment Reconstruction and Dual Source Computed Tomography Using a Computer Controlled Coronary Phantom</title><author>Ohashi, Kazuya ; Ichikawa, Katsuhiro ; Higashide, Ryo ; Kunitomo, Hirosi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2870-d47a6094bb7a30b4ea953833fad71cc302725eaa07e9ca7bb1aee1af683b77bc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>2011</creationdate><topic>computed tomography (CT)</topic><topic>Coronary Angiography - methods</topic><topic>coronary CT</topic><topic>dual source CT (DSCT)</topic><topic>Electrocardiography</topic><topic>Image Processing, Computer-Assisted - methods</topic><topic>Phantoms, Imaging</topic><topic>temporal resolution</topic><topic>temporal sensitivity profile (TSP)</topic><topic>Tomography, X-Ray Computed - methods</topic><toplevel>online_resources</toplevel><creatorcontrib>Ohashi, Kazuya</creatorcontrib><creatorcontrib>Ichikawa, Katsuhiro</creatorcontrib><creatorcontrib>Higashide, Ryo</creatorcontrib><creatorcontrib>Kunitomo, Hirosi</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Japanese Journal of Radiological Technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ohashi, Kazuya</au><au>Ichikawa, Katsuhiro</au><au>Higashide, Ryo</au><au>Kunitomo, Hirosi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Comparative Study of Electrocardiogram Multi-segment Reconstruction and Dual Source Computed Tomography Using a Computer Controlled Coronary Phantom</atitle><jtitle>Japanese Journal of Radiological Technology</jtitle><addtitle>Jpn. J. Radiol. Technol.</addtitle><date>2011</date><risdate>2011</risdate><volume>67</volume><issue>8</issue><spage>880</spage><epage>887</epage><pages>880-887</pages><issn>0369-4305</issn><eissn>1881-4883</eissn><abstract>Currently, there are two main methods for improving temporal resolution of coronary computed tomography (CT): electrocardiogram-gated multi-segment reconstruction (EMR) and dual source scanning using dual source CT (DSCT). We developed a motion phantom system for image quality assessment of cardiac CT to evaluate these two methods. This phantom system was designed to move an object at arbitrary speeds during a desired phase range in cyclic motion. By using this system, we obtained coronary CT mode images for motion objects like coronary arteries. We investigated the difference in motion artifacts between EMR and the DSCT using a 3-mm-diameter acrylic rod resembling the coronary artery. EMR was evaluated using 16-row multi-slice CT (16MSCT). 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| identifier | ISSN: 0369-4305 |
| ispartof | Japanese Journal of Radiological Technology, 2011/08/22, Vol.67(8), pp.880-887 |
| issn | 0369-4305 1881-4883 |
| language | eng ; jpn |
| recordid | cdi_crossref_primary_10_6009_jjrt_67_880 |
| source | MEDLINE; EZB-FREE-00999 freely available EZB journals |
| subjects | computed tomography (CT) Coronary Angiography - methods coronary CT dual source CT (DSCT) Electrocardiography Image Processing, Computer-Assisted - methods Phantoms, Imaging temporal resolution temporal sensitivity profile (TSP) Tomography, X-Ray Computed - methods |
| title | A Comparative Study of Electrocardiogram Multi-segment Reconstruction and Dual Source Computed Tomography Using a Computer Controlled Coronary Phantom |
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