Key result
Digital subtraction angiography demonstrated 85% sensitivity, 100% specificity, and 93% accuracy for detecting occlusive carotid lesions compared to conventional angiography.
Why the study?
Does digital subtraction angiography accurately detect occlusive carotid lesions compared to conventional angiography in patients with suspected cervical carotid disease?
Observational (n=17)
No
Does digital subtraction angiography accurately detect occlusive carotid lesions compared to conventional angiography in patients with suspected cervical carotid disease?
Digital subtraction angiography is a safe and reliable noninvasive screening method with high diagnostic accuracy (93%) for detecting occlusive carotid disease.
Answers are grounded in this paper and cite their sources.
May support DSA screening in suspected carotid disease; leaves open prospective validation before practice change.
Digital subtraction angiography (DSA), high resolution real time B-mode scanner (HRS), and pulsed doppler sonography were used to examine the cervical carotid lesions. Seventeen patients were studied by DSA before or after conventional angiography. To obtain good images, exposures were performed in both oblique positions. Sometimes, repeat studies were required with different degrees of obliquity to obtain more information. Subtracted images were obtained in real time, and post processing, especially remasking, was used to improve the image quality. In 28 carotid arteries of 17 patients, good images were obtained through such procedures. The quality of detecting carotid lesions with DSA was fairly good (sensitivity of 85%, specificity of 100%, accuracy of 93%). HRS demonstrated minor irregularities or slight stenosis within the lumen of the carotid artery, while the doppler examination appeared to be more useful in demonstrating obstructions of the carotid artery. It was concluded that DSA is a safe and reliable noninvasive screening method for detection of occlusive carotid disease.
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Koga et al. (1983) conducted an observational in Cervical carotid lesions (n=17). Digital subtraction angiography (DSA) vs. Conventional angiography was evaluated on Diagnostic accuracy for detecting occlusive carotid lesions (Accuracy 93% (Sensitivity 85%, Specificity 100%)). Digital subtraction angiography demonstrated 85% sensitivity, 100% specificity, and 93% accuracy for detecting occlusive carotid lesions compared to conventional angiography.
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