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Distance between the tonsillar fossa and internal carotid artery in children
M D Deutsch1, V M Kriss, J P Willging
1Department of Pediatric Otolaryngology, Children's Hospital Medical Center, Cincinnati, Ohio, USA.
Insights
The distance between the tonsillar fossa and internal carotid artery in children increases with age and weight. This anatomical distance can be predicted using these parameters, aiding in pediatric imaging assessments.
Area of Science:
- Pediatric anatomy
- Medical imaging
- Otolaryngology
Background:
- The internal carotid artery (ICA) is a critical structure in the head and neck.
- Understanding the spatial relationship between the ICA and surrounding anatomical landmarks is crucial for surgical planning and diagnostic imaging in children.
- Normative data for the distance from the tonsillar fossa to the ICA in pediatric populations is limited.
Purpose of the Study:
- To establish normative data for the distance between the tonsillar fossa and the internal carotid artery in children.
- To investigate the correlation between this anatomical distance and pediatric age and weight parameters.
- To provide predictive models for this distance based on age and weight.
Main Methods:
- A prospective study involving 100 children undergoing magnetic resonance imaging (MRI) for non-aerodigestive tract pathologies.
- Measurements were taken from the tonsillar fossa, identified by the torus tubarius, to the internal carotid artery.
- Data analysis focused on establishing relationships between the measured distance and the children's age and weight.
Main Results:
- A consistent, regular increase in the distance between the tonsillar fossa and the internal carotid artery was observed with advancing age and weight, approaching 25 mm.
- Both age and weight demonstrated exponential relationships with this distance, with asymptotes reached around 56 kg or 12 years of age.
- High correlation coefficients (0.8616 for weight, 0.8452 for age) and R2 values (0.7423 for weight, 0.7143 for age) indicate strong predictive power.
Conclusions:
- Age and weight are reliable parameters for predicting the distance from the tonsillar fossa to the internal carotid artery in children.
- These findings contribute valuable normative data for pediatric anatomical studies and clinical applications.
- The established predictive models can aid radiologists and surgeons in interpreting pediatric imaging and planning interventions.
Objective:
Obtain normative data on the distance from the tonsillar fossa to the internal carotid artery in children, and relate this distance to age and weight parameters.
Design:
A prospective study of 100 children undergoing magnetic resonance imaging studies for pathology unrelated to the upper aerodigestive tract. The torus tubarius corresponds to the lateral extent of the tonsillar fossa and was used as the reference site for measurements. One hundred children (aged 7 days to 18 years; median, 6 years) were consecutively entered into the study. Exclusion criteria included any preexisting abnormalities of the upper aerodigestive tract. The study defined the distance from the tonsillar fossa to the internal carotid artery. Relationships of this distance were defined for both age and weight parameters.
Results:
With increasing age and weight, the distance between the tonsillar fossa and the internal carotid artery increases in a regular fashion to a value approaching 25 mm. Both relationships are exponential with asymptotes being achieved by 56 kg (correlation coefficient, 0.8616; R2 value, 0.7423) or 12 years of age (correlation coefficient, 0.8452; R2 value, 0.7143).
Conclusion:
Age and weight parameters can be used to predict the distance from the tonsillar fossa to the internal carotid artery in children.