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However, the diagnostic requirements are not usually satisfied when using single imaging techniques. Diagnostic accuracy can be improved by combining different imaging techniques. Contrast agents that can be used for combined imaging modalities are needed. In this study, the feasibility of using microbubbles containing gadolinium (MCG) as contrast agents for both phase contrast imaging (PCI) and magnetic resonance imaging (MRI) are investigated. MCG were made by encapsulating sulfur hexafluoride (SF<jats:sub>6<\/jats:sub>) gas with gadolinium and lyophilized powder. Absorption contrast imaging (ACI) and PCI of MCG were performed and compared<jats:italic>in vitro<\/jats:italic>. MCG were injected into the main portal trunk of living rats. PCI and MRI were performed at 2\u2005min and 10\u2005min after MCG injection, respectively. PCI exploited the differences in the refractive index and visibly showed the MCG, which were not detectable by ACI. PCI could facilitate clear revelation of the MCG-infused portal veins. The diameter of the portal veins could be determined by the largest MCG in the same portal vein. The minimum diameter of clearly detected portal veins was about 300\u2005\u00b5m by MRI. These results indicate that MCG could enhance both PCI and MRI for imaging portal veins. The detection sensitivity of PCI and MRI could compensate for each other when using MCG contrast agents for animals.<\/jats:p>","DOI":"10.1107\/s1600577517017404","type":"journal-article","created":{"date-parts":[[2018,2,14]],"date-time":"2018-02-14T16:44:37Z","timestamp":1518626677000},"page":"560-564","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":3,"title":["Microbubbles containing gadolinium as contrast agents for both phase contrast and magnetic resonance imaging"],"prefix":"10.1107","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7931-7796","authenticated-orcid":true,"given":"Rongbiao","family":"Tang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fuhua","family":"Yan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guo-Yuan","family":"Yang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ke-Min","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2018,2,14]]},"reference":[{"key":"pp5112_bb1","doi-asserted-by":"crossref","first-page":"551","DOI":"10.1002\/jbm.b.31614","volume":"93B","author":"Ao","year":"2010","journal-title":"J. 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