Introduction: Cardiothoracic ratio and vertical height are important indicators of cardiac size. The chest radiograph provides excellent contrast between the air-filled, cardiac, and aortic outlines. Aim of the study: This study was aimed at determining the cardiothoracic ratio, vertical height, transverse dimension of the trachea of Nigerians resident in Port Harcourt. Materials and Methods: This was a retrospective descriptive study carried out in the Radiology Department of the University of Port Harcourt Teaching Hospital, Rivers State. The study duration was 8 months (January–September, 2021), which involved four hundred and forty-eight (216 males and 232 females) normal chest radiographs of adult Rivers aged between 18 and above. The radiographs were found to be normal by a qualified radiologist in the department. Random sampling was used to determine the sample size for the study. Results and Discussions: Males [VH(cm) 1.49±0.40; TDT(cm) 20.20±2.81; ACR(cm) 0.46±0.068]; females [VH(cm) 19.08±2.58; ACR(cm) 0.48±0.06; CTR (cm) 41.44±3.40]. The males had repeatedly higher values vertical height and cardiothoracic ratio than the females, while the females had a higher value for aorto-cardiac ratio. Conclusions: The values of vertical height, cardiothoracic ratio, transverse dimension of trachea, and aorto-cardiac ratio demonstrated sexual dimorphism, the males had consistently higher values than the females except for aorto-cardiac ratio.

Aim: This study was conducted to gather data on the normal measurements of facial features in healthy children from South-East Nigeria. The aim was to measure the distance between the pupils (IPD), the distance between the inner corners of the eyes (ICD), and the distance between the outer corners of the eyes (OCD) in order to establish a reference for ophthalmological assessments and diagnoses. The study was based on the understanding that these orbitofacial measurements and canthal indices are important tools for anatomists and craniofacial surgeons in evaluating systemic syndromes, craniofacial abnormalities, and post-traumatic telecanthus. Method: A sample of 120 healthy subjects within the age range of 1 to 5 years was enrolled in this study. The photographs of the face were captured non- invasively using a Nikon D 90 camera, orbitofacial landmarks were identified and measured using Image J Software. The data was then analyzed to determine the normal measurements for these facial features in healthy children from South- East Nigeria. Results: showed that all parameters measured (IPD, ICD, OCD) were higher in females than in males, but the difference was not statistically significant. Conclusion: The study presents a primary data base for orbitofacial anthropometric indices of children in South-East Nigerian which can be used as a reference for ophthalmological assessments and diagnoses. This data can be used to aid in the diagnosis of craniofacial abnormalities and post-traumatic telecanthus, as well as to evaluate systemic syndromes. Additionally, this study can be used as a benchmark for future studies on this topic in the same population or other population as well.