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Reliability and variability in the interpretation of lumbar high intensity zone

Yıl 2015, Cilt: 49 Sayı: 6, 606 - , 28.10.2015

Öz

Objective: The aim of this study was to evaluate the reliability of high intensity zone (HIZ) and to assess discrepancy in the interpretation, as well as investigate the effects of parameters of HIZ on interobserver variation.
Methods: Four spine surgeons made independent observations on lumbar magnetic resonance imaging (MRI) from 207 consecutive patients from 3 institutions. The κ statistic was used to characterize inter- and intraobserver reliability for visual assessments of HIZ. The corresponding MRI was provided to 2 additional spine surgeons for quantitative measurements. The parameters of HIZ, including signal intensity (SI) and area ratio (HIZ%), were used to assess the interobserver variation of HIZ.
Results: The overall interobserver agreement for visual assessments was substantial (κ=0.62 at L4–5 and 0.61 at L5–S1), and intraobserver agreement was excellent (κ=0.84 at L4–5 and 0.86 at L5–S1). Of 93 observed HIZ, 17 instances (18.3%) were agreed upon by all visual observers. The SI with full agreement was significantly brighter than all the others (p<0.01). The HIZ% with 2 agreements was significantly smaller than those with 4 agreements (p=0.04) and 3 agreements (p=0.03). Although fewer observers with consensus were associated with smaller HIZ%, the difference was not significant (p>0.05).
Conclusion: The reliability in the interpretation of HIZ was sufficient for spine surgeons with differing levels of experience. This study highlighted that signal intensity was the primary cause of variability in visual observation.

 

DOI: 10.3944/AOTT.2015.14.0267

Kaynakça

  • Brant-Zawadzki MN, Jensen MC, Obuchowski N, Ross JS, Modic MT. Interobserver and intraobserver vari
Yıl 2015, Cilt: 49 Sayı: 6, 606 - , 28.10.2015

Öz

Kaynakça

  • Brant-Zawadzki MN, Jensen MC, Obuchowski N, Ross JS, Modic MT. Interobserver and intraobserver vari
Toplam 1 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Bölüm Orijinal Makale
Yazarlar

Chao Liu Bu kişi benim

Shun-Wu Fan Bu kişi benim

Xiang-Qian Fang Bu kişi benim

Yun-Jian Liu Bu kişi benim

He-Jun Yu Bu kişi benim

Yin-Jiang Lu Bu kişi benim

Yayımlanma Tarihi 28 Ekim 2015
Yayımlandığı Sayı Yıl 2015 Cilt: 49 Sayı: 6

Kaynak Göster

APA Liu, C., Fan, S.-W., Fang, X.-Q., Liu, Y.-J., vd. (2015). Reliability and variability in the interpretation of lumbar high intensity zone. Acta Orthopaedica Et Traumatologica Turcica, 49(6), 606. https://doi.org/10.3944/AOTT.2015.14.0267
AMA Liu C, Fan SW, Fang XQ, Liu YJ, Yu HJ, Lu YJ. Reliability and variability in the interpretation of lumbar high intensity zone. Acta Orthopaedica et Traumatologica Turcica. Ekim 2015;49(6):606. doi:10.3944/AOTT.2015.14.0267
Chicago Liu, Chao, Shun-Wu Fan, Xiang-Qian Fang, Yun-Jian Liu, He-Jun Yu, ve Yin-Jiang Lu. “Reliability and Variability in the Interpretation of Lumbar High Intensity Zone”. Acta Orthopaedica Et Traumatologica Turcica 49, sy. 6 (Ekim 2015): 606. https://doi.org/10.3944/AOTT.2015.14.0267.
EndNote Liu C, Fan S-W, Fang X-Q, Liu Y-J, Yu H-J, Lu Y-J (01 Ekim 2015) Reliability and variability in the interpretation of lumbar high intensity zone. Acta Orthopaedica et Traumatologica Turcica 49 6 606.
IEEE C. Liu, S.-W. Fan, X.-Q. Fang, Y.-J. Liu, H.-J. Yu, ve Y.-J. Lu, “Reliability and variability in the interpretation of lumbar high intensity zone”, Acta Orthopaedica et Traumatologica Turcica, c. 49, sy. 6, s. 606, 2015, doi: 10.3944/AOTT.2015.14.0267.
ISNAD Liu, Chao vd. “Reliability and Variability in the Interpretation of Lumbar High Intensity Zone”. Acta Orthopaedica et Traumatologica Turcica 49/6 (Ekim 2015), 606. https://doi.org/10.3944/AOTT.2015.14.0267.
JAMA Liu C, Fan S-W, Fang X-Q, Liu Y-J, Yu H-J, Lu Y-J. Reliability and variability in the interpretation of lumbar high intensity zone. Acta Orthopaedica et Traumatologica Turcica. 2015;49:606.
MLA Liu, Chao vd. “Reliability and Variability in the Interpretation of Lumbar High Intensity Zone”. Acta Orthopaedica Et Traumatologica Turcica, c. 49, sy. 6, 2015, s. 606, doi:10.3944/AOTT.2015.14.0267.
Vancouver Liu C, Fan S-W, Fang X-Q, Liu Y-J, Yu H-J, Lu Y-J. Reliability and variability in the interpretation of lumbar high intensity zone. Acta Orthopaedica et Traumatologica Turcica. 2015;49(6):606.