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Published in: Insights into Imaging 1/2014

Open Access 01-02-2014 | Original Article

The prevalence of morphological changes in the thoracolumbar spine on whole-spine computed tomographic images

Authors: Aya Nakajima, Akihito Usui, Yoshiyuki Hosokai, Yusuke Kawasumi, Kenta Abiko, Masato Funayama, Haruo Saito

Published in: Insights into Imaging | Issue 1/2014

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Abstract

Objectives

This article reviews the prevalence of lumbarisation, sacralisation and lumbar ribs, and their morphological relevance by evaluating multi-slice computed tomography (MSCT) images. These segment variations can cause miscounting of vertebrae at the lumbar spinal level.

Methods

A retrospective radiographic analysis of 226 cases scanned by MSCT prior to forensic autopsy was undertaken. MSCT scans of the entire spine were obtained. Radiological data were evaluated on a three-dimensional image workstation. Vertebral levels were determined by counting downward from the first cervical vertebra, based on the assumption of seven cervical, 12 thoracic and five lumbar vertebrae. The prevalence of lumbarisation, sacralisation and lumbar ribs was assessed.

Results

Lumbar ribs were observed in 13 of the 226 cases (5.8 %). Lumbarisation and sacralisation were observed in 14 cases (6.2 %) and six cases (2.7 %), respectively. Lumbar ribs were present in 11 of the 14 cases with lumbarisation, and in two of the 206 cases with normal lumbar vertebral configuration. Lumbarisation had a statistically significant association with lumbar ribs (p < 0.01).

Conclusions

There was a strong association between lumbar ribs and lumbarisation, with a resulting miscount rate for the lumbar spine of slightly less than 10 %.

Teaching points

  • Lumbarisation and sacralisation are observed 6.2 % and 2.7 %, respectively.
  • Thoracolumbar segment variations can cause a miscount rate for the lumbar spine of less than 10 %.
  • Lumbar rib is significantly associated to lumbarisation.
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Metadata
Title
The prevalence of morphological changes in the thoracolumbar spine on whole-spine computed tomographic images
Authors
Aya Nakajima
Akihito Usui
Yoshiyuki Hosokai
Yusuke Kawasumi
Kenta Abiko
Masato Funayama
Haruo Saito
Publication date
01-02-2014
Publisher
Springer Berlin Heidelberg
Published in
Insights into Imaging / Issue 1/2014
Electronic ISSN: 1869-4101
DOI
https://doi.org/10.1007/s13244-013-0286-0

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