Diagnostic and Interventional Radiology
Neuroradiology - Original Article
Prediction of degree of carotid stenosis with the transluminal attenuation difference ratio

Prediction of degree of carotid stenosis with the transluminal attenuation difference ratio

1.

Department of Radiology, Ankara University School of Medicine, Ankara, Turkey

2.

Department of Neurology, Ankara University School of Medicine, Ankara, Turkey

3.

Department of Biostatistics, Ankara University School of Medicine, Ankara, Turkey

Diagn Interv Radiol 2020; 26: 249-254
DOI: 10.5152/dir.2019.19259
Read: 178 Downloads: 74 Published: 18 February 2020

PURPOSE

We aimed to assess the diagnostic performance of transluminal attenuation difference (TAD) in predicting the severity of internal carotid artery (ICA) stenosis.

 

METHODS

The study cohort consisted of 48 patients with <50% stenosis, 50%–69% stenosis, 70%–99% stenosis, and 51 controls without plaque development in ICA. A total of 143 measurements were performed through right and left internal and common carotid arteries. The TAD ratio was calculated as the difference between the mean attenuation values of the common carotid artery (CCA) and ICA, divided by the MAV of the CCA, multiplied by 100.

 

RESULTS

TAD ratio was significantly higher in severe (>70%) stenosis compared with control arteries and low-moderate stenosis. A TAD ratio cutoff of 4.5 predicted 70%–99% stenosis with a sensitivity of 100% and specificity of 93%. The inter- and intraobserver agreements in TAD measurements were almost perfect (ICC, 0.89–0.86).

 

CONCLUSION

Assessment of TAD ratio predicts the degree of stenosis in concordance with NASCET system.

 

You may cite this article as: Gürsoy Çoruh A, Peker E, Gülpınar B, Sorgun MH, Elhan AH, Fitoz ÖS. Prediction of degree of carotid stenosis with the transluminal attenuation difference ratio. Diagn Interv Radiol 2020; 26:249–254.

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