Quantitative Evaluation of Cervical Spine Morphometry: Zero Echo Time MRI Versus Multislice CT
Xuelin Pan1, Li Peng1, Huilou Liang2
1Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China.
Journal of Magnetic Resonance Imaging : JMRI
|August 7, 2026
Summary
Zero-echo-time (ZTE) MRI shows excellent agreement with CT for cervical spine morphometry and better depicts degenerative osseous changes than conventional MRI. However, CT may still be needed for precise pedicle evaluation in surgical planning.
Area of Science:
- Radiology
- Medical Imaging
- Orthopedic Surgery
Background:
- Preoperative cervical assessment often requires both CT and MRI for comprehensive bony and soft-tissue evaluation.
- CT involves radiation exposure, while MRI has limitations in depicting cortical bone detail.
- Zero-echo-time (ZTE) MRI offers CT-like contrast in a single examination, but its quantitative accuracy for cervical morphometry compared to CT is uncertain.
Purpose of the Study:
- To quantitatively assess the agreement between ZTE MRI and CT for cervical osseous morphometry.
- To compare the ability of ZTE MRI versus conventional MRI in visualizing degenerative osseous features.
Main Methods:
- Prospective study involving 38 surgical patients (mean age 54.3 years).
- Quantitative morphometric measurements (80 per patient) and qualitative assessment of degenerative osseous features were performed.
- Interobserver agreement was evaluated using Intraclass Correlation Coefficients (ICC) and Fleiss' kappa.
Main Results:
- ZTE MRI demonstrated good-to-excellent agreement with CT for mean measurements of vertebral body height, disc height, and neuroforaminal dimensions (ICC 0.85-0.94).
- Agreement for minimum measurements, particularly pedicle dimensions, showed lower correlation with CT (ICC < 0.60), with ZTE overestimating narrow pedicles.
- ZTE MRI improved the depiction of degenerative osseous features compared to conventional MRI in 92.1% of patients (Fleiss' κ = 0.86).
Conclusions:
- ZTE MRI exhibits strong agreement with CT for key cervical spine morphometric parameters.
- ZTE MRI enhances the visualization of degenerative osseous changes compared to conventional MRI.
- CT remains essential for precise pedicle evaluation when required for surgical planning.
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