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Radiation doses were recorded, and overall and specific diagnostic quality (1\u20134) were scored by four paediatric radiologists. Agreement, differences, and trends were assessed by percent rater agreement, intraclass correlation, Mann\u2013Whitney tests, and Jonckheere-Terpstra tests.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Seventy children with congenital heart defects were examined at 70\u00a0kV (<jats:italic>n<\/jats:italic>\u2009=\u200935; age 2\u00a0days\u201316\u00a0years; 63% boys) or 90\u00a0kV (<jats:italic>n<\/jats:italic>\u2009=\u200935; age 2\u00a0days\u201317\u00a0years; 51% boys). All observers gave a median score of 4 (high diagnostic quality) for both 70\u00a0kV and 90\u00a0kV, with no difference in median values between tube voltages (all\u00a0<jats:italic>P<\/jats:italic>\u2009&gt;\u20090.06). Agreement for overall scores was 66\u201394% for 70\u00a0kV and 60\u201377% for 90\u00a0kV. Agreement for specific scores was 80\u201397% for 70\u00a0kV and 83\u201389% for 90\u00a0kV. Size-dependent dose estimate was 0.68 mGy (0.25\u20132.02 mGy) for 70\u00a0kV and 1.10 mGy (0.58\u20132.71 mGy;<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001) for 90 kV. Effective dose was 0.30 mSv (0.15\u20130.82 mSv) for 70 kV and 0.39 mSv (0.22\u20131.51 mSv;<jats:italic>P<\/jats:italic>\u2009=\u20090.01) for 90 kV.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Paediatric cardiovascular PCCT yields images for congenital heart defects of high diagnostic quality with low radiation dose at both 70 kV and 90 kV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00247-024-05939-z","type":"journal-article","created":{"date-parts":[[2024,5,3]],"date-time":"2024-05-03T14:37:57Z","timestamp":1714747077000},"page":"1187-1196","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Photon-counting computed tomography for paediatric congenital heart defects yields images of high diagnostic quality with low radiation doses at both 70 kV and 90 kV"],"prefix":"10.1007","volume":"54","author":[{"given":"Fredrik","family":"St\u00e5lhammar","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-7044-2419","authenticated-orcid":false,"given":"Marie-Louise","family":"Aurumskj\u00f6ld","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sofie","family":"Meyer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marie","family":"Wiklund","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P\u00e4r","family":"Wingren","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9680-4972","authenticated-orcid":false,"given":"Petru","family":"Liuba","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0041-9357","authenticated-orcid":false,"given":"Erik","family":"Hedstr\u00f6m","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,5,3]]},"reference":[{"key":"5939_CR1","doi-asserted-by":"publisher","first-page":"112","DOI":"10.1161\/CIRCIMAGING.109.875021","volume":"3","author":"A Prakash","year":"2010","unstructured":"Prakash A, Powell AJ, Geva T (2010) Multimodality noninvasive imaging for assessment of congenital heart disease. 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