{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T05:18:35Z","timestamp":1782969515107,"version":"3.54.5"},"reference-count":28,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2024,7,19]],"date-time":"2024-07-19T00:00:00Z","timestamp":1721347200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Ultrasound Medicine"],"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Four\u2010dimensional hysterosalpingo\u2010contrast sonography (4D\u2010HyCoSy) can non\u2010invasively evaluate the patency of the fallopian tubes and is increasingly used in clinical practice. However, some factors may lead to false\u2010positive diagnoses. This study aims to analyze the factors affecting clear imaging of the fallopian tubes in 4D\u2010HyCoSy and explore methods to improve the quality of fallopian tube imaging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 118 patients were enrolled in this retrospective study. After injecting the SonoVue into the uterine cavity, three <jats:italic>modes<\/jats:italic> of HyCoSy were completed in sequence: 4D\u2010HyCoSy, 2D\u2010HyCoSy, and second harmonic imaging (SHI). Participants were divided into two groups: the easy visualization group (fallopian tubes could be visualized using only 4D\u2010HyCoSy) and the difficult visualization group (a multimodal combination was required for visualization). The position of the uterus, the relationship between the ovaries and the uterus, endometrial thickness, time of catheterization in the uterine cavity, presence or absence of lesions in the uterine cavity, whether intestinal gas covers the fallopian tubes and the imaging effect of different modes on the fallopian tubes was analyzed, to determine the key factors affecting the clear imaging of the fallopian tubes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The positional relationship between the ovary and the uterus (OR\u2009=\u20094.711, 95% CI: 1.322\u201319.77, <jats:italic>P<\/jats:italic>\u2009=\u20090.023), the positioning of the uterus (OR\u2009=\u20093.843, 95% CI: 1.129\u201315.26, <jats:italic>P<\/jats:italic>\u2009=\u20090.04), endometrial thickness (OR\u2009=\u20093.985, 95% CI: 1.168\u201315.99, <jats:italic>P<\/jats:italic>\u2009=\u20090.036), and the duration of intrauterine catheter placement (OR\u2009=\u20093.547, 95% CI: 1.042\u201313.52, <jats:italic>P<\/jats:italic>\u2009=\u20090.05) were independent factors that affecting difficulty in visualizing the fallopian tubes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Uterine position, the positional relationship between the ovary and the uterus, endometrial thickness, and the time of catheter insertion are factors that affect visualizing the fallopian tubes during 4D\u2010HyCoSy. The combination of multimodal imaging, especially the combination of 4D\u2010HyCoSy with SHI mode, can help improve the quality of fallopian tube visualization.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jum.16530","type":"journal-article","created":{"date-parts":[[2024,7,19]],"date-time":"2024-07-19T12:43:51Z","timestamp":1721393031000},"page":"1957-1967","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Factors Influencing the Visualization of Fallopian Tubes in Hysterosalpingo\u2010Contrast Sonography (<scp>HyCoSy<\/scp>)\u2014The Value of Multimodal <scp>HyCoSy<\/scp> in Visualizing the Fallopian Tubes"],"prefix":"10.1002","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0868-9474","authenticated-orcid":false,"given":"Yan","family":"Li","sequence":"first","affiliation":[{"name":"Department of Ultrasound The First Clinical Medical College of Anhui University of Traditional Chinese Medicine  Anhui 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