4D CT to assess spinal instability in developmental anomaly of posterior arch of atlas

Author:

Yip Stefanie WY1ORCID,Griffith James F1,Lee Ryan KL1,Liu King Lok

Affiliation:

1. Department of Imaging and Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong

Abstract

Four-dimensional (4D) CT uniquely allows cinematic visualization of the entirety of joint motion throughout dynamic movement, which can reveal subtle or transient internal joint derangements not evident on static images. As developmental anomalies of the posterior arch can predispose to cervical spinal instability and neurological morbidity, precise assessment of spinal movement during motion is of clinical relevance. We describe the use of 4D-CT in a subject with partial absence of posterior C1 arch. This, to our knowledge, is the first such report. In at-risk individuals, 4D-CT has the potential to enable an assessment of spinal instability with a higher level of clarity and, in this sense, its more routine implementation may be a future direction.

Publisher

British Institute of Radiology

Subject

Pharmacology (medical),Complementary and alternative medicine,Pharmaceutical Science

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