Aortic Knob Diameter in Chest Radiographs of Healthy Adults in Uganda

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dc.contributor.authorMagera, Steven
dc.contributor.authorSereke, Senai Goitom
dc.contributor.authorOkello, Emmy
dc.contributor.authorAmeda, Faith
dc.contributor.authorErem, Geoffrey
dc.date.accessioned2025-06-30T08:22:34Z
dc.date.available2025-06-30T08:22:34Z
dc.date.issued2022-03
dc.description.abstractBackground The burden of cardiovascular diseases, such as aortic and degenerative diseases, grows in the aging population. Chest radiograph still plays an important role in the diagnosis of cardiovascular diseases. Aortic knob diameter in chest radiographs can be used to evaluate early changes of the aortic structure and together with clinical and laboratory findings. This study was aimed at determining the mean values of aortic knob diameter among healthy adults in Uganda. Methods We conducted a descriptive cross-sectional study in three selected hospitals in Kampala Uganda. All participants had normal chest radiographs without radiological evidence of cardiovascular disease. Chest radiograph findings extracted included aortic knob diameter, aortic arch diameter, transverse heart diameter, and transverse thoracic diameter. All films were independently examined by two experienced radiologists. Results We analyzed chest radiograph findings of 294 participants, of which 204 (69.4%) were male. Aortic knob diameter increased with age (p – 0.000). The mean aortic knob diameter of males was higher than for females (3.14±0.34cm versus 2.77±0.37cm, p – 0.000). The mean aortic knob diameter on the digital screen was higher than plain films (3.03±0.393cm versus 2.96±0.392cm, p – 0.000). Aortic knob diameter positively correlated with age (p – 0.000) and aortic arch diameter (p – 0.000). Aortic knob diameter also correlated positively with a transverse thoracic diameter (p – 0.05), transverse heart diameter (p – 0.05), and cardiothoracic ratios (p – 0.05). Conclusion The aortic knob diameter was higher in males and there was a positive correlation with age, aortic arch diameter, transverse heart diameter, and transverse thoracic diameter. Aortic knob diameter measurements should be done on digital rather than printed x-ray films.
dc.identifier.citation: Steven Magera, Senai Goitom Sereke, Emmy Okello, Faith Ameda & Geoffrey Erem (2022) Aortic Knob Diameter in Chest Radiographs of Healthy Adults in Uganda, Reports in Medical Imaging, , 21-29, DOI: 10.2147/RMI.S356443
dc.identifier.doi10.2147/rmi.s356443
dc.identifier.issn1179-1586
dc.identifier.urihttps://doi.org/10.2147/RMI.S356443
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/11914
dc.language.isoen
dc.publisherInforma UK Limited
dc.relation.ispartofReports in Medical Imaging
dc.titleAortic Knob Diameter in Chest Radiographs of Healthy Adults in Uganda
dc.typejournal-article
oaire.citation.volumeVolume 15
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