Echo-planar DWI variants: A comparative study in vertebral marrow pathology.

Autor: Kesen S; Department of Radiology, Gazi University Faculty of Medicine, Ankara, Turkey., Tokgöz N; Department of Radiology, Gazi University Faculty of Medicine, Ankara, Turkey.
Jazyk: angličtina
Zdroj: Journal of clinical ultrasound : JCU [J Clin Ultrasound] 2024 Nov-Dec; Vol. 52 (9), pp. 1329-1337. Date of Electronic Publication: 2024 Aug 28.
DOI: 10.1002/jcu.23779
Abstrakt: Purpose: Single-shot echo-planar imaging (ss-EPI) has limited application in vertebral column imaging due to numerous artifacts. Therefore, we aimed to compare readout-segmented echo-planar imaging (rs-EPI) to ss-EPI and assess its value in the differential diagnosis of vertebral infectious, tumoral infiltrative, and degenerative disorders.
Materials and Methods: Sixty-six adult patients with spondylodiscitis (SD, n = 26), tumoral infiltration (TI, n = 20), or Modic type I degeneration (DE, n = 20) findings on spinal magnetic resonance imaging (MRI) included in this retrospective study. Two radiologists scored images for quality on a 4-point scale (image resolution, degree of geometric distortion, lesion selectivity, and diagnostic reliability) and measured signal intensity (SI), apparent diffusion coefficient (ADC), signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR). DE and SD groups also united to form the benign group.
Results: In all groups, rs-EPI performed better than ss-EPI in image quality, SNR, and CNR (p < 0.05). The difference between mean pathological ADC (ADC P ) in the two sequences was statistically significant (p < 0.05). There was no significant difference between the groups in terms of ADC P in rs-EPI (p = 0.229), unlike ss-EPI (p = .025). Pathological SI (SI P ) and CNR in rs-EPI were significantly higher in the malignant group than benign group (p = 0.002, p < 0.001). In rs-EPI, no significant difference was found between malignant and benign groups' ADC P (p = 0.13).
Conclusion: The rs-EPI is a diffusion-weighted imaging (DWI) method with higher image quality that diminishes motion-induced phase errors and increases resolution through phase corrections. However, the distinction of malignant and benign vertebral bone marrow pathologies is unsatisfactory for rs-EPI compared with ss-EPI.
(© 2024 Wiley Periodicals LLC.)
Databáze: MEDLINE
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