{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,4]],"date-time":"2022-04-04T06:31:39Z","timestamp":1649053899408},"reference-count":27,"publisher":"Akademiai Kiado Zrt.","issue":"32","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Orvosi Hetilap"],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:p> Aortic valve stenosis may be accompanied by angina despite coronary arteries free of significant stenosis due to microvascular abnormalities. Aims: The aim of the current study was to test whether densitometry-derived myocardial perfusion on coronary angiogram is reduced in patients with aortic valve stenosis. Methods: The study comprised 20 patients with aortic valve stenosis (mean transvalvular gradient: 47.4\u00b115.2 mm Hg) and 30 control subjects without significant epicardial coronary artery stenosis. A quantitative parameter of myocardial perfusion was calculated by the ratio of maximal density (G<jats:sub>max<\/jats:sub>) and time to reach maximum density (T<jats:sub>max<\/jats:sub>) on time\u2013density curves in regions of interest of each coronary artery on coronary angiograms. Results: Mean three-vessel G<jats:sub>max<\/jats:sub>\/T<jats:sub>max<\/jats:sub> proved to be significantly lower in patients with aortic valve stenosis compared to control subjects (2.55\u00b11.02 1\/sec vs. 3.39\u00b11.09 1\/sec, p&lt;0.01). Conclusions: Reduced G<jats:sub>max<\/jats:sub>\/T<jats:sub>max<\/jats:sub> values indicative of myocardial perfusion abnormalities as measured by densitometry on coronary angiograms could be demonstrated in patients with aortic valve stenosis compared to controls. Orv. Hetil., 2012, 153, 1256\u20131262. <\/jats:p>","DOI":"10.1556\/oh.2012.29409","type":"journal-article","created":{"date-parts":[[2012,8,10]],"date-time":"2012-08-10T07:29:27Z","timestamp":1344583767000},"page":"1256-1262","source":"Crossref","is-referenced-by-count":1,"title":["Aortic valve stenosis is associated with reduced myocardial perfusion as assessed by videodensitometry in coronary angiograms"],"prefix":"10.1556","volume":"153","author":[{"given":"Ferenc Tam\u00e1s","family":"Nagy","sequence":"first","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tam\u00e1s","family":"Horv\u00e1th","sequence":"additional","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tam\u00e1s","family":"Ungi","sequence":"additional","affiliation":[{"name":"Queen\u2019s University School of Computing Kingston ON Kanada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Viktor","family":"Sasi","sequence":"additional","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zsolt","family":"Zimmermann","sequence":"additional","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anita","family":"Kalapos","sequence":"additional","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tam\u00e1s","family":"Forster","sequence":"additional","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Imre","family":"Ungi","sequence":"additional","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Attila","family":"Nemes","sequence":"additional","affiliation":[{"name":"Szegedi Tudom\u00e1nyegyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar II. Belgy\u00f3gy\u00e1szati Klinika \u00e9s Kardiol\u00f3giai K\u00f6zpont, Invaz\u00edv Kardiol\u00f3giai R\u00e9szleg \u00e9s Hemodinamikai Laborat\u00f3rium Szeged Kor\u00e1nyi fasor 6. 6720"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"425","reference":[{"key":"atypb1","volume-title":"Braunwald\u2019s heart disease","year":"2011"},{"key":"atypb2","doi-asserted-by":"crossref","first-page":"258","DOI":"10.1016\/S0735-1097(83)80161-2","volume":"2","year":"1983","journal-title":"J. Am. Coll. 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