Interobserver and inter-modality concordance of quiescent interval slice selective magnetic resonance angiography and CT angiography in assessment of critical lower limb ischemia.

Autor: Abdelzaher, Dina Gamal, Elmokadem, Ali Hassan, Saleh, Gehad Ahmad, Abdelrazek, Ahmed Abdelkhalek, Elshafei, Amr Mohamed
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Zdroj: Egyptian Journal of Radiology & Nuclear Medicine; 10/10/2024, Vol. 55 Issue 1, p1-9, 9p
Abstrakt: Background: We evaluated the noncontrast MRA as an alternate method to CT angiography in assessment of patients with lower limb ischemia, 30 patients were included in a prospective cohort study; they underwent quiescent interval slice selective magnetic resonance angiography (QISS-MRA) and computed tomographic angiography (CTA). The assessment of images was evaluated by two independent consultants. The overall subjective image quality, interobserver and intermodality concordance were calculated. Results: The median acquisition time in QISS-MRA was 20 min (range 18–30 min), The overall subjective image quality was rated similarly with QISS-MRA (3.13 [95% CI 2.84–3.42]) and CTA (3.23 [95% CI 2.94–3.52]; p = 0.08) with interobserver concordance for lesion ratings in QISS-MRA reached (κ = 0.987 (SD 0.006)), while for CTA it was (κ = 0.99 (SD 0.006)), while the intermodality concordance between QISS-MRA and CTA in lesion ratings were calculated on a per segment basis and was (κ = 0.944 (SD 0.013)) for reader 1 and (κ = 0.947 (SD 0.013)) for reader 2, with sensitivity 100% and specificity 97.6% Conclusions: QISS-MRA is a reliable modality for assessment of patients with critical limb ischemia. [ABSTRACT FROM AUTHOR]
Databáze: Supplemental Index
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