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Fırat Tıp Dergisi
2014, Cilt 19, Sayı 2, Sayfa(lar) 064-071
[ Turkish ] [ Tam Metin ] [ PDF ]
Diffusion-Weighted Imaging of the Spinal Lesions as Spondylodiscitis, Metastases, and Degeneration with a Non-Carr-Purcell-Meibom-Gill Single-shot Fast Spin Echo Sequence
Fatih ÇELİKYAY1, Yusuf ÖNER2, Turgut TALI2, PH Le ROUX3, Şule DEVECİ4, Ruken YÜKSEKKAYA1
1Gaziosmanpaşa Üniversitesi Tıp Fakültesi, Radyoloji Anabilim Dalı, Tokat, Türkiye
2Gazi Üniversitesi, Radyoloji Anabilim Dalı, Ankara, Türkiye
3General Electric Medical Sysytems, Buc Cedex, Fransa
4Lüleburgaz Devlet Hastanesi, Nöroloji Anabilim Dalı, Kırklareli, Türkiye

Objective: To determine the efficacy of apparent diffusion coefficient (ADC) values obtained by using non-Carr-Purcell-Meibom-Gill (Non-CPMG) single-shot fast-spin-echo (SS-FSE) diffusion weighted imaging (DWI) technique in the differential diagnosis of spondylodiscitis, type 1 spinal degenerative changes, and spinal metastases.

Material and Method: Fifty-seven patients with 24 spinal metastases, 18 spondylodiscitis, and 15 type 1 spinal degenerative changes were examined by using non-CPMG SS-FSE DWI technique. The ADC values of affected vertebrae were calculated. In addition to the ADC values of the affected and normal vertebrae were rationed. The calculated ADC values and ratios were compared between spondylodiscitis, degeneration, and spinal metastasis. The patients were also grouped as benign and malignant processes. These groups were also compared with each other.

Results: ADC maps of all three groups showed hyper signal intensity. The average ADC values for normal and pathological groups were 0.25 ± 0.05 mm2/sn and 1.07 ± 022 mm2/sn respectively. There was significantly difference between normal and pathological groups. The values and ratios of ADC in both spondylodiscitis and type 1 degeneration groups were significantly higher than metastatic group. There was statistically significant difference in the ADC values and ratios between benign and malignant groups.

Conclusion: Non–CPMG SS-FSE DWI is less prone to the magnetic suseptibility artefacts because it bases on FSE. Although there is some overlaping between groups the ADC values and ratios with sufficient image quality obtained by using Non-CPMG SS-FSE DWI may contributed to the evaluation of vertebra bone marrow disorders.


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