Functional assessment of coronary artery flow using adenosine stress dual-energy CT: a preliminary study
We attempted to assess coronary artery flow using adenosine-stress and dual-energy mode with dual-source CT (DE-CT). Data of 18 patients with suspected coronary arteries disease who had undergone cardiac DE-CT were retrospectively analyzed. The patients were divided into two groups: 10 patients who...
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| Veröffentlicht in: | The International Journal of Cardiovascular Imaging 2011-03, Vol.27 (3), p.471-481 |
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| creator | Nagao, Michinobu Kido, Teruhito Watanabe, Kouki Saeki, Hideyuki Okayama, Hideki Kurata, Akira Hosokawa, Kohei Higashino, Hiroshi Mochizuki, Teruhito |
| description | We attempted to assess coronary artery flow using adenosine-stress and dual-energy mode with dual-source CT (DE-CT). Data of 18 patients with suspected coronary arteries disease who had undergone cardiac DE-CT were retrospectively analyzed. The patients were divided into two groups: 10 patients who performed adenosine stress CT, and 8 patients who performed rest CT as controls. We reconstructed an iodine map and composite images at 120 kV (120 kV images) using raw data with scan parameters of 100 and 140 kV. We measured mean attenuation in the coronary artery proximal to the distal portion on both the iodine map and 120 kV images. Coronary enhancement ratio (CER) was calculated by dividing mean attenuation in the coronary artery by attenuation in the aortic root, and was used as an estimate of coronary enhancement. Coronary stenosis was identified as a reduction in diameter of >50% on CT angiogram, and myocardial ischemia was diagnosed by adenosine-stress myocardial perfusion scintigraphy. The iodine map showed that CER was significantly lower for ischemic territories (0.76 ± 0.06) or stenosed coronary arteries (0.77 ± 0.06) than for non-ischemic territories (0.95 ± 0.21,
P
= 0.02) or non-stenosed coronary arteries (1.07 ± 0.33,
P
|
| doi_str_mv | 10.1007/s10554-010-9676-2 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_3092061</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>866250145</sourcerecordid><originalsourceid>FETCH-LOGICAL-c534t-99a7d29ba476c21d5611fcce3c5e179ce5081e6e269e4d0d6db4dc192a6f774f3</originalsourceid><addsrcrecordid>eNp1kU1vFDEMhiMEoqXwA7igiAungJPJx4YDElq1gFSJSzlH2cSznWomWZKZov33ZLulfEicbMWP39h-CXnJ4S0HMO8qB6UkAw7MaqOZeEROuTIdAyO7x4dcW6aMlSfkWa03ACBAdE_JiQC90ivVnZLriyWFecjJj9TXirVOmGaaexpyaa9lT32ZsYV-zD_oUoe0pT5iyi1DWufSWmhc_MgwYdnu6frqPfV0V3AcpuFOoM5L3D8nT3o_VnxxH8_It4vzq_Vndvn105f1x0sWVCdnZq03UdiNl0YHwaPSnPchYBcUcmMDKlhx1Ci0RRkh6riRMXArvO6NkX13Rj4cdXfLZsIY2jbFj25XhqnN4rIf3N-VNFy7bb51Hdh2Ft4E3twLlPx9wTq7aagBx9EnzEt1K62FAi5VI1__Q97kpbRLNshoqZQwB4gfoVByrQX7h1E4uIOL7uiiay66g4tOtJ5Xf-7w0PHLtgaII1BbKW2x_P75_6o_AVU_qpU</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>876455275</pqid></control><display><type>article</type><title>Functional assessment of coronary artery flow using adenosine stress dual-energy CT: a preliminary study</title><source>MEDLINE</source><source>Springer Nature - Complete Springer Journals</source><creator>Nagao, Michinobu ; Kido, Teruhito ; Watanabe, Kouki ; Saeki, Hideyuki ; Okayama, Hideki ; Kurata, Akira ; Hosokawa, Kohei ; Higashino, Hiroshi ; Mochizuki, Teruhito</creator><creatorcontrib>Nagao, Michinobu ; Kido, Teruhito ; Watanabe, Kouki ; Saeki, Hideyuki ; Okayama, Hideki ; Kurata, Akira ; Hosokawa, Kohei ; Higashino, Hiroshi ; Mochizuki, Teruhito</creatorcontrib><description>We attempted to assess coronary artery flow using adenosine-stress and dual-energy mode with dual-source CT (DE-CT). Data of 18 patients with suspected coronary arteries disease who had undergone cardiac DE-CT were retrospectively analyzed. The patients were divided into two groups: 10 patients who performed adenosine stress CT, and 8 patients who performed rest CT as controls. We reconstructed an iodine map and composite images at 120 kV (120 kV images) using raw data with scan parameters of 100 and 140 kV. We measured mean attenuation in the coronary artery proximal to the distal portion on both the iodine map and 120 kV images. Coronary enhancement ratio (CER) was calculated by dividing mean attenuation in the coronary artery by attenuation in the aortic root, and was used as an estimate of coronary enhancement. Coronary stenosis was identified as a reduction in diameter of >50% on CT angiogram, and myocardial ischemia was diagnosed by adenosine-stress myocardial perfusion scintigraphy. The iodine map showed that CER was significantly lower for ischemic territories (0.76 ± 0.06) or stenosed coronary arteries (0.77 ± 0.06) than for non-ischemic territories (0.95 ± 0.21,
P
= 0.02) or non-stenosed coronary arteries (1.07 ± 0.33,
P
< 0.001). The 120 kV images showed no difference in CER between these two groups. Use of CER on the iodine map separated ischemic territories from non-ischemic territories with a sensitivity of 86% and a specificity of 75%. Our quantification is the first non-invasive analytical technique for assessment of coronary artery flow using cardiac CT. CER on the iodine map is a candidate method for demonstration of alteration in coronary artery flow under adenosine stress, which is related to the physiological significance of coronary artery disease.</description><identifier>ISSN: 1569-5794</identifier><identifier>EISSN: 1573-0743</identifier><identifier>EISSN: 1875-8312</identifier><identifier>DOI: 10.1007/s10554-010-9676-2</identifier><identifier>PMID: 20686853</identifier><identifier>CODEN: IJCIBI</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Adenosine ; Aged ; Aged, 80 and over ; Cardiac Imaging ; Cardiology ; Case-Control Studies ; Contrast Media ; Coronary Angiography - methods ; Coronary Circulation ; Coronary Stenosis - diagnostic imaging ; Coronary Stenosis - physiopathology ; Female ; Humans ; Imaging ; Iopamidol ; Japan ; Male ; Medicine ; Medicine & Public Health ; Middle Aged ; Myocardial Ischemia - diagnostic imaging ; Myocardial Ischemia - physiopathology ; Myocardial Perfusion Imaging - methods ; Original Paper ; Pilot Projects ; Predictive Value of Tests ; Radiographic Image Interpretation, Computer-Assisted ; Radiology ; Retrospective Studies ; Severity of Illness Index ; Tomography, X-Ray Computed ; Vasodilator Agents</subject><ispartof>The International Journal of Cardiovascular Imaging, 2011-03, Vol.27 (3), p.471-481</ispartof><rights>The Author(s) 2010</rights><rights>The Author(s) 2010.</rights><rights>Springer Science+Business Media, B.V. 2011</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c534t-99a7d29ba476c21d5611fcce3c5e179ce5081e6e269e4d0d6db4dc192a6f774f3</citedby><cites>FETCH-LOGICAL-c534t-99a7d29ba476c21d5611fcce3c5e179ce5081e6e269e4d0d6db4dc192a6f774f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10554-010-9676-2$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10554-010-9676-2$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>230,314,776,780,881,27903,27904,41467,42536,51298</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20686853$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Nagao, Michinobu</creatorcontrib><creatorcontrib>Kido, Teruhito</creatorcontrib><creatorcontrib>Watanabe, Kouki</creatorcontrib><creatorcontrib>Saeki, Hideyuki</creatorcontrib><creatorcontrib>Okayama, Hideki</creatorcontrib><creatorcontrib>Kurata, Akira</creatorcontrib><creatorcontrib>Hosokawa, Kohei</creatorcontrib><creatorcontrib>Higashino, Hiroshi</creatorcontrib><creatorcontrib>Mochizuki, Teruhito</creatorcontrib><title>Functional assessment of coronary artery flow using adenosine stress dual-energy CT: a preliminary study</title><title>The International Journal of Cardiovascular Imaging</title><addtitle>Int J Cardiovasc Imaging</addtitle><addtitle>Int J Cardiovasc Imaging</addtitle><description>We attempted to assess coronary artery flow using adenosine-stress and dual-energy mode with dual-source CT (DE-CT). Data of 18 patients with suspected coronary arteries disease who had undergone cardiac DE-CT were retrospectively analyzed. The patients were divided into two groups: 10 patients who performed adenosine stress CT, and 8 patients who performed rest CT as controls. We reconstructed an iodine map and composite images at 120 kV (120 kV images) using raw data with scan parameters of 100 and 140 kV. We measured mean attenuation in the coronary artery proximal to the distal portion on both the iodine map and 120 kV images. Coronary enhancement ratio (CER) was calculated by dividing mean attenuation in the coronary artery by attenuation in the aortic root, and was used as an estimate of coronary enhancement. Coronary stenosis was identified as a reduction in diameter of >50% on CT angiogram, and myocardial ischemia was diagnosed by adenosine-stress myocardial perfusion scintigraphy. The iodine map showed that CER was significantly lower for ischemic territories (0.76 ± 0.06) or stenosed coronary arteries (0.77 ± 0.06) than for non-ischemic territories (0.95 ± 0.21,
P
= 0.02) or non-stenosed coronary arteries (1.07 ± 0.33,
P
< 0.001). The 120 kV images showed no difference in CER between these two groups. Use of CER on the iodine map separated ischemic territories from non-ischemic territories with a sensitivity of 86% and a specificity of 75%. Our quantification is the first non-invasive analytical technique for assessment of coronary artery flow using cardiac CT. CER on the iodine map is a candidate method for demonstration of alteration in coronary artery flow under adenosine stress, which is related to the physiological significance of coronary artery disease.</description><subject>Adenosine</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Cardiac Imaging</subject><subject>Cardiology</subject><subject>Case-Control Studies</subject><subject>Contrast Media</subject><subject>Coronary Angiography - methods</subject><subject>Coronary Circulation</subject><subject>Coronary Stenosis - diagnostic imaging</subject><subject>Coronary Stenosis - physiopathology</subject><subject>Female</subject><subject>Humans</subject><subject>Imaging</subject><subject>Iopamidol</subject><subject>Japan</subject><subject>Male</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Middle Aged</subject><subject>Myocardial Ischemia - diagnostic imaging</subject><subject>Myocardial Ischemia - physiopathology</subject><subject>Myocardial Perfusion Imaging - methods</subject><subject>Original Paper</subject><subject>Pilot Projects</subject><subject>Predictive Value of Tests</subject><subject>Radiographic Image Interpretation, Computer-Assisted</subject><subject>Radiology</subject><subject>Retrospective Studies</subject><subject>Severity of Illness Index</subject><subject>Tomography, X-Ray Computed</subject><subject>Vasodilator Agents</subject><issn>1569-5794</issn><issn>1573-0743</issn><issn>1875-8312</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><recordid>eNp1kU1vFDEMhiMEoqXwA7igiAungJPJx4YDElq1gFSJSzlH2cSznWomWZKZov33ZLulfEicbMWP39h-CXnJ4S0HMO8qB6UkAw7MaqOZeEROuTIdAyO7x4dcW6aMlSfkWa03ACBAdE_JiQC90ivVnZLriyWFecjJj9TXirVOmGaaexpyaa9lT32ZsYV-zD_oUoe0pT5iyi1DWufSWmhc_MgwYdnu6frqPfV0V3AcpuFOoM5L3D8nT3o_VnxxH8_It4vzq_Vndvn105f1x0sWVCdnZq03UdiNl0YHwaPSnPchYBcUcmMDKlhx1Ci0RRkh6riRMXArvO6NkX13Rj4cdXfLZsIY2jbFj25XhqnN4rIf3N-VNFy7bb51Hdh2Ft4E3twLlPx9wTq7aagBx9EnzEt1K62FAi5VI1__Q97kpbRLNshoqZQwB4gfoVByrQX7h1E4uIOL7uiiay66g4tOtJ5Xf-7w0PHLtgaII1BbKW2x_P75_6o_AVU_qpU</recordid><startdate>20110301</startdate><enddate>20110301</enddate><creator>Nagao, Michinobu</creator><creator>Kido, Teruhito</creator><creator>Watanabe, Kouki</creator><creator>Saeki, Hideyuki</creator><creator>Okayama, Hideki</creator><creator>Kurata, Akira</creator><creator>Hosokawa, Kohei</creator><creator>Higashino, Hiroshi</creator><creator>Mochizuki, Teruhito</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>C6C</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>K9.</scope><scope>M0S</scope><scope>M1P</scope><scope>M7Z</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20110301</creationdate><title>Functional assessment of coronary artery flow using adenosine stress dual-energy CT: a preliminary study</title><author>Nagao, Michinobu ; 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Data of 18 patients with suspected coronary arteries disease who had undergone cardiac DE-CT were retrospectively analyzed. The patients were divided into two groups: 10 patients who performed adenosine stress CT, and 8 patients who performed rest CT as controls. We reconstructed an iodine map and composite images at 120 kV (120 kV images) using raw data with scan parameters of 100 and 140 kV. We measured mean attenuation in the coronary artery proximal to the distal portion on both the iodine map and 120 kV images. Coronary enhancement ratio (CER) was calculated by dividing mean attenuation in the coronary artery by attenuation in the aortic root, and was used as an estimate of coronary enhancement. Coronary stenosis was identified as a reduction in diameter of >50% on CT angiogram, and myocardial ischemia was diagnosed by adenosine-stress myocardial perfusion scintigraphy. The iodine map showed that CER was significantly lower for ischemic territories (0.76 ± 0.06) or stenosed coronary arteries (0.77 ± 0.06) than for non-ischemic territories (0.95 ± 0.21,
P
= 0.02) or non-stenosed coronary arteries (1.07 ± 0.33,
P
< 0.001). The 120 kV images showed no difference in CER between these two groups. Use of CER on the iodine map separated ischemic territories from non-ischemic territories with a sensitivity of 86% and a specificity of 75%. Our quantification is the first non-invasive analytical technique for assessment of coronary artery flow using cardiac CT. CER on the iodine map is a candidate method for demonstration of alteration in coronary artery flow under adenosine stress, which is related to the physiological significance of coronary artery disease.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><pmid>20686853</pmid><doi>10.1007/s10554-010-9676-2</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Adenosine Aged Aged, 80 and over Cardiac Imaging Cardiology Case-Control Studies Contrast Media Coronary Angiography - methods Coronary Circulation Coronary Stenosis - diagnostic imaging Coronary Stenosis - physiopathology Female Humans Imaging Iopamidol Japan Male Medicine Medicine & Public Health Middle Aged Myocardial Ischemia - diagnostic imaging Myocardial Ischemia - physiopathology Myocardial Perfusion Imaging - methods Original Paper Pilot Projects Predictive Value of Tests Radiographic Image Interpretation, Computer-Assisted Radiology Retrospective Studies Severity of Illness Index Tomography, X-Ray Computed Vasodilator Agents |
| title | Functional assessment of coronary artery flow using adenosine stress dual-energy CT: a preliminary study |
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