Journal List > J Korean Orthop Assoc > v.47(2) > 1013138

Shim, Kim, Oh, Lee, and Yang: Comparison of Ultrasonography and Magnetic Resonance Imaging in Measurement of Lumbar Spine Anatomic Structures

Abstract

Purpose

The aim of this study was to determine the usefulness of ultrasonography for lumbar anatomical structure measurement.

Materials and Methods

From January 2011 to April 2011, 41 patients (22 males, 19 females) with back pain who visited the outpatient department and underwent lumbar magnetic resonance imaging (MRI) were selected. In each level of L4 and L5, we measured the longest distance and horizontal distance between each inferior articular process based off a spinous process. We also measured the distance between the spinous process tip and the vertebral body posterior surface and the thickness and width of the multifidus muscle. All distances were measured with ultrasonography and MRI and the two measurement results were compared.

Results

Using ultrasonography and MRI, we measured the distance between the spinous process tip and the posterior surface of the body. The distances were 39.16±8.71 mm/39.53±6.01 mm at L4 and 38.32±9.66 mm/37.74±10.54 mm at L5. The right multifidus muscle thickness measurements were 32.13±10.79 mm/33.84±9 mm at L4 and 31.32±10.04 mm/32.84±12.28 mm at L5. The measuring distance between the spinous process center to the posterior vertebral body surface and thickness of multifidus muscles by ultrasonography and MRI had significant correlations (p<0.05).

Conclusion

Limitations still exist in measuring the structure of lumbar anatomy with ultrasonography. However, measuring the distance between the spinous process center to the vertebral body posterior surface and multifidus muscle thickness was effective.

Figures and Tables

Figure 1
(A) Longest distance of inferior articular surface (oblique line) and horizontal distance of inferior articular surface (...) at axial transverse ultrasound image of L4-5 level. (B) Longest distance of inferior articular surface (oblique line) and horizontal distance of inferior articular surface (...) at axial transverse magnetic resonance imaging image of L4-5 level.
jkoa-47-140-g001
Table 1
Distance between SP and VB
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*SPSS 12.0 version (SPSS Inc., Chicago, IL, USA) independence t test (p-value<0.05). SP, spinous process; VB, vertebral body; US, ultrasonography; SD, standard deviation; MRI, magnetic resonance imaging.

Table 2
Result of Measurance
jkoa-47-140-i002

*ANOVA test (p-value<0.05). US, ultrasonography; SD, standard deviation; MRI, magnetic resonance imaging; SP, spinous process; LD, longest distance; HD, horizontal distance.

Table 3
Reliability of Ultrasound
jkoa-47-140-i003

*Intra-observer, Pearson correlation cofeeicient (p-value<0.05); Inter-observer, Cronbach α (p-value<0.05). SP, spinous process; VPB, vertebral posterior border.

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