{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T21:48:45Z","timestamp":1791928125985,"version":"4.3.4"},"reference-count":22,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2013,11,5]],"date-time":"2013-11-05T00:00:00Z","timestamp":1383609600000},"content-version":"vor","delay-in-days":4,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Colorectal Disease"],"published-print":{"date-parts":[[2013,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>The purpose of this study was to demonstrate the distribution of haemorrhoidal arteries and the relationship between vascularity and growth of haemorrhoids.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>One\u2010hundred and three patients with haemorrhoids were studied. Using power <jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>oppler imaging (<jats:styled-content style=\"fixed-case\">PDI<\/jats:styled-content>) transanal ultrasound and three\u2010dimensional power <jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>oppler angiography (3<jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">PDA<\/jats:styled-content>), the course of the arteries supplying the haemorrhoids was identified. Measurement of the <jats:styled-content style=\"fixed-case\">PDI<\/jats:styled-content> area was made using the cursor to outline the power <jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>oppler signal of the haemorrhoid, approximately 1\u00a0cm above the dentate line.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The haemorrhoidal arteries were seen as branches of the superior rectal artery and were detected in 75.7, 71.8, 68.0 and 62.1% of the 11, 7, 3 and 1 o'clock positions in the lithotomy position. The median number of haemorrhoidal arteries significantly increased from three to six with progression of the <jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>oligher classification from <jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>rade 1 to <jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>rade 4 (<jats:italic><jats:styled-content style=\"fixed-case\">P<\/jats:styled-content><\/jats:italic>\u00a0&lt;\u00a00.0001). The <jats:styled-content style=\"fixed-case\">PDI<\/jats:styled-content> areas in <jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>rades 1, 2, 3 and 4 were 0.04\u00a0\u00b1\u00a00.03, 0.18\u00a0\u00b1\u00a00.07, 0.38\u00a0\u00b1\u00a00.18 and 0.96\u00a0\u00b1\u00a00.32\u00a0cm<jats:sup>2<\/jats:sup> (<jats:italic><jats:styled-content style=\"fixed-case\">P<\/jats:styled-content><\/jats:italic>\u00a0&lt;\u00a00.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The distribution of haemorrhoidal arteries varies widely in both number and position. Using <jats:styled-content style=\"fixed-case\">PDI<\/jats:styled-content> transanal ultrasonography and 3<jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">PDA<\/jats:styled-content> it was possible to visualize the haemorrhoid plexus and the course of the haemorrhoidal artery <jats:italic>in vivo<\/jats:italic>.<\/jats:p><\/jats:sec>","DOI":"10.1111\/codi.12406","type":"journal-article","created":{"date-parts":[[2013,8,27]],"date-time":"2013-08-27T07:49:46Z","timestamp":1377589786000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Visualization and hypervascularization of the haemorrhoidal plexus <i>in vivo<\/i> using power <scp>D<\/scp>oppler imaging transanal ultrasonography and three\u2010dimensional power <scp>D<\/scp>oppler angiography"],"prefix":"10.1111","volume":"15","author":[{"given":"H.","family":"Miyamoto","sequence":"first","affiliation":[{"name":"Department of Surgery and Proctologic Surgery Miyamoto Hospital Anan Japan"},{"name":"Department of Digestive and Pediatric Surgery Institute of Health Biosciences University of Tokushima Graduate School Tokushima Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Asanoma","sequence":"additional","affiliation":[{"name":"Department of Surgery and Proctologic Surgery Miyamoto Hospital Anan Japan"},{"name":"Department of Digestive and Pediatric Surgery Institute of Health Biosciences University of Tokushima Graduate School Tokushima Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"Miyamoto","sequence":"additional","affiliation":[{"name":"Department of Surgery and Proctologic Surgery Miyamoto Hospital Anan Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Takasu","sequence":"additional","affiliation":[{"name":"Department of Digestive and Pediatric Surgery Institute of Health Biosciences University of Tokushima Graduate School Tokushima Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K.","family":"Masamune","sequence":"additional","affiliation":[{"name":"Department of Surgery Anan Kyoei Hospital Anan Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Shimada","sequence":"additional","affiliation":[{"name":"Department of Digestive and Pediatric Surgery Institute of Health Biosciences University of Tokushima Graduate School Tokushima 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