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{"title"=>"Major radiodiagnostic imaging in pregnancy and the risk of childhood malignancy: A population-based cohort study in Ontario", "type"=>"journal", "authors"=>[{"first_name"=>"Joel G.", "last_name"=>"Ray", "scopus_author_id"=>"7402379058"}, {"first_name"=>"Michael J.", "last_name"=>"Schull", "scopus_author_id"=>"7003309512"}, {"first_name"=>"Marcelo L.", "last_name"=>"Urquia", "scopus_author_id"=>"16242834800"}, {"first_name"=>"John J.", "last_name"=>"You", "scopus_author_id"=>"13408013200"}, {"first_name"=>"Astrid", "last_name"=>"Guttmann", "scopus_author_id"=>"7004302588"}, {"first_name"=>"Marian J.", "last_name"=>"Vermeulen", "scopus_author_id"=>"7101748765"}], "year"=>2010, "source"=>"PLoS Medicine", "identifiers"=>{"sgr"=>"77957884449", "pmid"=>"20838660", "isbn"=>"1549-1277", "pui"=>"359754403", "issn"=>"15491277", "scopus"=>"2-s2.0-77957884449", "doi"=>"10.1371/journal.pmed.1000337"}, "id"=>"68851cf2-e7f3-3431-80eb-cc5808a82750", "abstract"=>"The association between fetal exposure to major radiodiagnostic testing in pregnancy-computed tomography (CT) and radionuclide imaging-and the risk of childhood cancer is not established.", "link"=>"http://www.mendeley.com/research/major-radiodiagnostic-imaging-pregnancy-risk-childhood-malignancy-populationbased-cohort-study-ontar", "reader_count"=>25, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>3, "Researcher"=>3, "Student > Ph. D. Student"=>4, "Student > Postgraduate"=>2, "Student > Master"=>3, "Other"=>4, "Student > Bachelor"=>1, "Lecturer"=>1, "Professor"=>3}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>3, "Researcher"=>3, "Student > Ph. D. Student"=>4, "Student > Postgraduate"=>2, "Student > Master"=>3, "Other"=>4, "Student > Bachelor"=>1, "Lecturer"=>1, "Professor"=>3}, "reader_count_by_subject_area"=>{"Unspecified"=>4, "Medicine and Dentistry"=>15, "Agricultural and Biological Sciences"=>1, "Physics and Astronomy"=>1, "Psychology"=>2, "Social Sciences"=>2}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>15}, "Social Sciences"=>{"Social Sciences"=>2}, "Physics and Astronomy"=>{"Physics and Astronomy"=>1}, "Psychology"=>{"Psychology"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>1}, "Unspecified"=>{"Unspecified"=>4}}, "reader_count_by_country"=>{"Canada"=>1, "United Kingdom"=>1}, "group_count"=>3}

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• http://doi.org/10.1088/0952-4746/33/1/1
• http://doi.org/10.1016/j.jcrc.2014.07.017
• http://doi.org/10.1007/s00247-011-2163-7
• http://doi.org/10.1016/j.pan.2018.09.010
• http://doi.org/10.1016/j.rcl.2011.08.001
• http://doi.org/10.1007/s00247-020-04803-0
• http://doi.org/10.1186/cc13895
• http://doi.org/10.1200/JCO.2015.62.4445
• http://doi.org/10.1056/NEJMoa1408932
• http://doi.org/10.1016/j.siny.2013.11.009
• http://doi.org/10.1007/s00411-016-0650-9
• http://doi.org/10.1111/jth.13980
• http://doi.org/10.1016/S1701-2163(15)30232-2
• http://doi.org/10.1016/j.emc.2019.01.009
• http://doi.org/10.1017/S0965539512000149
• http://doi.org/10.1016/j.jogc.2016.09.070
• http://doi.org/10.1016/j.jvir.2011.09.007
• http://doi.org/10.1016/j.jcmg.2016.09.012
• http://doi.org/10.3322/caac.21132
• http://doi.org/10.1016/S1701-2163(16)35159-3
• http://doi.org/10.17116/rosakush20181805132
• http://doi.org/10.1667/RR2848.1
• http://doi.org/10.1002/cam4.3138
• http://doi.org/10.1200/JCO.19.01382

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Figshare

• {"files"=>["https://ndownloader.figshare.com/files/830994"], "description"=>"<p>Data are presented for radionuclide testing (lower solid line), CT scan (upper dashed line), and both (solid bars with total number per year).</p>", "links"=>[], "tags"=>["radiodiagnostic", "ontario"], "article_id"=>501360, "categories"=>["Medicine", "Cell Biology", "Cancer"], "users"=>["Joel G. Ray", "Michael J. Schull", "Marcelo L. Urquia", "John J. You", "Astrid Guttmann", "Marian J. Vermeulen"], "doi"=>"https://dx.doi.org/10.1371/journal.pmed.1000337.g001", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Annual_rate_of_major_radiodiagnostic_testing_in_pregnancy_in_Ontario_over_time_/501360", "title"=>"Annual rate of major radiodiagnostic testing in pregnancy in Ontario over time.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-09-07 00:22:40"}
• {"files"=>["https://ndownloader.figshare.com/files/831193"], "description"=>"a<p>Adjusted for maternal age at delivery (continuous in years), income quintile, urban status, and diagnosed maternal cancer in the index pregnancy and up to 6 mo thereafter, as well as infant sex, a chromosomal or congenital anomaly, and exposure to a major radiodiagnostic test exposure after birth.</p>", "links"=>[], "tags"=>["malignancy", "offspring", "women", "exposed", "radiodiagnostic", "compared", "unexposed"], "article_id"=>501556, "categories"=>["Medicine", "Cell Biology", "Cancer"], "users"=>["Joel G. Ray", "Michael J. Schull", "Marcelo L. Urquia", "John J. You", "Astrid Guttmann", "Marian J. Vermeulen"], "doi"=>"https://dx.doi.org/10.1371/journal.pmed.1000337.t002", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Risk_of_childhood_malignancy_in_the_offspring_of_women_exposed_to_major_radiodiagnostic_testing_in_pregnancy_compared_to_unexposed_women_/501556", "title"=>"Risk of childhood malignancy in the offspring of women exposed to major radiodiagnostic testing in pregnancy compared to unexposed women.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2010-09-07 00:25:56"}
• {"files"=>["https://ndownloader.figshare.com/files/414114", "https://ndownloader.figshare.com/files/414151", "https://ndownloader.figshare.com/files/414197"], "description"=>"<div><h3>Background</h3><p>The association between fetal exposure to major radiodiagnostic testing in pregnancy—computed tomography (CT) and radionuclide imaging—and the risk of childhood cancer is not established.</p><h3>Methods and Findings</h3><p>We completed a population-based study of 1.8 million maternal-child pairs in the province of Ontario, from 1991 to 2008. We used Ontario's universal health care–linked administrative databases to identify all term obstetrical deliveries and newborn records, inpatient and outpatient major radiodiagnostic services, as well as all children with a malignancy after birth. There were 5,590 mothers exposed to major radiodiagnostic testing in pregnancy (3.0 per 1,000) and 1,829,927 mothers not exposed. The rate of radiodiagnostic testing increased from 1.1 to 6.3 per 1,000 pregnancies over the study period; about 73% of tests were CT scans. After a median duration of follow-up of 8.9 years, four childhood cancers arose in the exposed group (1.13 per 10,000 person-years) and 2,539 cancers in the unexposed group (1.56 per 10,000 person-years), a crude hazard ratio of 0.69 (95% confidence interval 0.26–1.82). After adjusting for maternal age, income quintile, urban status, and maternal cancer, as well as infant sex, chromosomal or congenital anomalies, and major radiodiagnostic test exposure after birth, the risk was essentially unchanged (hazard ratio 0.68, 95% confidence interval 0.25–1.80).</p><h3>Conclusions</h3><p>Although major radiodiagnostic testing is now performed in about 1 in 160 pregnancies in Ontario, the absolute annual risk of childhood malignancy following exposure in utero remains about 1 in 10,000. Since the upper confidence limit of the relative risk of malignancy may be as high as 1.8 times that of an unexposed pregnancy, we cannot exclude the possibility that fetal exposure to CT or radionuclide imaging is carcinogenic.</p><h3></h3><p><em>Please see later in the article for the Editors' Summary</em></p></div>", "links"=>[], "tags"=>["radiodiagnostic", "imaging", "population-based", "cohort", "ontario"], "article_id"=>141779, "categories"=>["Medicine", "Cell Biology", "Cancer"], "users"=>["Joel G. Ray", "Michael J. Schull", "Marcelo L. Urquia", "John J. You", "Astrid Guttmann", "Marian J. Vermeulen"], "doi"=>["https://dx.doi.org/10.1371/journal.pmed.1000337.s001", "https://dx.doi.org/10.1371/journal.pmed.1000337.s002", "https://dx.doi.org/10.1371/journal.pmed.1000337.s003"], "stats"=>{"downloads"=>16, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Major_Radiodiagnostic_Imaging_in_Pregnancy_and_the_Risk_of_Childhood_Malignancy_A_Population_Based_Cohort_Study_in_Ontario/141779", "title"=>"Major Radiodiagnostic Imaging in Pregnancy and the Risk of Childhood Malignancy: A Population-Based Cohort Study in Ontario", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2010-09-07 00:29:39"}
• {"files"=>["https://ndownloader.figshare.com/files/831068"], "description"=>"<p>Risk of childhood cancer in the offspring of women exposed (lower solid) and not exposed (upper dashed) to a major radiodiagnostic test in pregnancy.</p>", "links"=>[], "tags"=>["cancer", "offspring", "women", "exposed", "radiodiagnostic"], "article_id"=>501436, "categories"=>["Medicine", "Cell Biology", "Cancer"], "users"=>["Joel G. Ray", "Michael J. Schull", "Marcelo L. Urquia", "John J. You", "Astrid Guttmann", "Marian J. Vermeulen"], "doi"=>"https://dx.doi.org/10.1371/journal.pmed.1000337.g002", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Risk_of_childhood_cancer_in_the_offspring_of_women_exposed_lower_solid_and_not_exposed_upper_dashed_to_a_major_radiodiagnostic_test_in_pregnancy_/501436", "title"=>"Risk of childhood cancer in the offspring of women exposed (lower solid) and not exposed (upper dashed) to a major radiodiagnostic test in pregnancy.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-09-07 00:23:56"}
• {"files"=>["https://ndownloader.figshare.com/files/831243"], "description"=>"a<p>All data are presented as a number (%) unless otherwise indicated.</p>b<p>Ventilation-perfusion lung scan (89.4%) or thyroid scan (10.6%).</p>c<p>Determined using data from April 1, 2002 onward.</p>", "links"=>[], "tags"=>["mothers", "infants", "exposed", "radiodiagnostic"], "article_id"=>501607, "categories"=>["Medicine", "Cell Biology", "Cancer"], "users"=>["Joel G. Ray", "Michael J. Schull", "Marcelo L. Urquia", "John J. You", "Astrid Guttmann", "Marian J. Vermeulen"], "doi"=>"https://dx.doi.org/10.1371/journal.pmed.1000337.t001", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Characteristics_of_mothers_and_their_infants_who_were_and_who_were_not_exposed_to_a_major_radiodiagnostic_testing_in_pregnancy_/501607", "title"=>"Characteristics of mothers and their infants who were and who were not exposed to a major radiodiagnostic testing in pregnancy.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2010-09-07 00:26:47"}

PMC Usage Stats | Further Information

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Relative Metric

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F1000Prime