Objective To observe the value of flexible splicing contrast-enhancement boost(CE-boost)technique applicated in head and neck CT angiography(CTA).Methods Data of 40 patients who underwent head and neck CT A examination were retrospectively analyzed.Subjective evaluation of conventional CTA images(group A)and CE-boost images(group B)were performed using a 5-point scale according to overall image quality,vascular clarity and integrity of vascular tree,while objective evaluation of both groups were performed focused on the average CT value,image noise,signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of the main vessels.The outcomes of subjective and objective evaluations were compared between groups.Results The subjective scores of images in group B were higher than those in group A in terms of overall image quality,vessel sharpness and integrity of vascular tree(all P＜0.001).The mean CT value,SNR and CNR of vessels at all levels in group B were significantly higher than those in group A(all P＜0.001).Conclusion Flexible splicing CE-boost technique could improve image quality of head and neck CTA.
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