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Pediatric Radiology
Published in: Pediatric Radiology 4/2021

01-04-2021 | Magnetic Resonance Imaging | Original Article

Normal anterior-posterior diameters of the spinal cord and spinal canal in healthy term newborns on sonography

Authors: Gagandeep Singh, Alan J. True, Christopher C. Lui, Prateek Prasanna, Genevieve Orleans, Luke Partyka, Tej D. Phatak

Published in: Pediatric Radiology | Issue 4/2021

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Abstract

Background

There are no published normal values for spinal cord and canal diameters in newborns. Spinal cord and spinal canal diameters are assessed subjectively by radiologists without any objective values for the upper limit of normal.

Objective

To determine normal values for anteroposterior (AP) diameters of the spinal cord and spinal canal on sonography in healthy term newborns.

Materials and methods

We performed ultrasound of the entire spine on 37 healthy newborns (23 male, 14 female). The AP diameters of the spinal canal and spinal cord were measured at representative levels of the cervical (C4, C5, C6), thoracic (T5, T6, T7, T8) and lumbar spine (lumbar enlargement and above and below the lumbar enlargement level). Statistical analysis was performed to determine the mean and standard deviation of the spinal canal and spinal cord AP diameter at each aforementioned vertebral level, and their correlations with birth weight, length and head circumference.

Results

The mean AP spinal cord diameter was 4.1±0.5 mm at the cervical level, 3.3±0.3 mm at the thoracic level and 4.4±0.6 mm at the lumbar level. The mean AP spinal canal diameter was 7.7±0.7 mm at the cervical level, 6.2±0.8 mm at the thoracic level, and 8.4±0.7 mm at the lumbar level.

Conclusion

In this prospective study, we have determined normal values for AP diameters of the spinal cord and spinal canal on sonography in healthy newborns at representative cervical, thoracic and lumbar levels. This data may assist in evaluating the neonatal spine in clinical situations such as suspected spinal cord injury.
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Metadata
Title
Normal anterior-posterior diameters of the spinal cord and spinal canal in healthy term newborns on sonography
Authors
Gagandeep Singh
Alan J. True
Christopher C. Lui
Prateek Prasanna
Genevieve Orleans
Luke Partyka
Tej D. Phatak
Publication date
01-04-2021
Publisher
Springer Berlin Heidelberg
Published in
Pediatric Radiology / Issue 4/2021
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI
https://doi.org/10.1007/s00247-020-04879-8

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