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The effect and outcomes between underwent OCT-guided RA and IVUS-guided RA were compared.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 33 lesions in 32 patients received OCT-guided RA and 51 lesions in 47 patients received IVUS-guided RA. There was no significant difference between OCT-guided RA group and IVUS-guided RA group in clinical baselines characteristics. Comparing the procedural and lesions characteristics of the two groups, the contrast volume was larger [(348.8\u2009\u00b1\u2009110.6) ml vs. (275.2\u2009\u00b1\u200976.8) ml,<jats:italic>P<\/jats:italic>\u2009=\u20090.002] and the scoring balloon was more frequently performed (33.3% vs. 3.9%,<jats:italic>P<\/jats:italic>\u2009=\u20090.001) after RA and before stenting in the OCT-guided RA group. Comparing the intravascular imaging findings of the two groups, stent expansion was significantly larger in the OCT-guided RA group ([82\u2009\u00b1\u20098]% vs. [75\u2009\u00b1\u20099]%,<jats:italic>P<\/jats:italic>\u2009=\u20090.001). Both groups achieved procedural success immediately. There were no significantly differences in the incidence of complications. Although there was no statistical difference in the occurrence of MACE at 1 year between OCT-guided RA group and IVUS-guided RA group (3.1% vs. 6.4%,<jats:italic>P<\/jats:italic>\u2009=\u20090.517), no cardiovascular death, TVR and stent thrombosis occurred in OCT-guided RA group.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>OCT-guided RA compared to IVUS-guided RA for treating calcified coronary lesions resulted in better stent expansion and may have improved prognosis.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s12872-021-02103-5","type":"journal-article","created":{"date-parts":[[2021,6,11]],"date-time":"2021-06-11T09:03:34Z","timestamp":1623402214000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Comparison of optical coherence tomography-guided and intravascular ultrasound-guided rotational atherectomy for calcified coronary lesions"],"prefix":"10.1186","volume":"21","author":[{"given":"Weili","family":"Teng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuliang","family":"Ma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengfu","family":"Cao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingyu","family":"Lu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chang","family":"Hou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weimin","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,6,11]]},"reference":[{"issue":"6","key":"2103_CR1","doi-asserted-by":"crossref","first-page":"905","DOI":"10.1002\/ccd.22347","volume":"75","author":"M Wiemer","year":"2010","unstructured":"Wiemer M, Butz T, Schmidt W, Schmitz KP, Horstkotte D, Langer C. 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