Dual-energy X-ray absorptiometry provides two modes of head computed tomography （CT） angiography scanning： neuro-digital subtraction angiography and dual-energy CT angiography （DE-CTA）. Previous studies have comp...Dual-energy X-ray absorptiometry provides two modes of head computed tomography （CT） angiography scanning： neuro-digital subtraction angiography and dual-energy CT angiography （DE-CTA）. Previous studies have compared image quality, radiation exposure, and bone removal between neuro-digital subtraction angiography and DE-CTA. However, the number of cases was relatively small. The present study examined 300 suspected cases of cerebrovascular disease and observed the methods and duration of post-processing, examination time, and data volume. Results demonstrated similar image quality between the two methods, but lower radiation doses and shorter examination time in DE-CTA. DE-CTA allowed for faster and more stable scanning performance and post-processing methods, facilitating accurate and direct diagnosis of cerebrovascular disease.展开更多
目的探讨CT血管造影(CTA)与多普勒超声(DUS)检查在下肢动脉硬化性闭塞症(ASO)中的诊断效能。方法选取我院经数字减影血管造影(DSA)检查并接受腔内血管成形术治疗的80例ASO患者。以DSA作为金标准,对比患者术前CTA及DUS诊断ASO的效能及一...目的探讨CT血管造影(CTA)与多普勒超声(DUS)检查在下肢动脉硬化性闭塞症(ASO)中的诊断效能。方法选取我院经数字减影血管造影(DSA)检查并接受腔内血管成形术治疗的80例ASO患者。以DSA作为金标准,对比患者术前CTA及DUS诊断ASO的效能及一致性。结果CTA对全段下肢动脉及髂动脉段≥50%血管狭窄及闭塞的检出率分别较DUS高4.89%(P=0.002)和2.29%(P=0.007)。CTA对下肢全段≥50%血管狭窄及腘上动脉段管腔闭塞的诊断效能及一致性均高于DUS(敏感性:81.47%~96.84%vs 80.35%~89.66%;特异性82.39%~90.75%vs 82.16%~87.25%;Kappa值:0.82~0.98 vs 0.79~0.94),而对腘下动脉段血管闭塞的评估表现不及DUS(敏感性:77.83%vs 78.49%;特异性:72.15%vs 79.28%;Kappa值:0.72 vs 0.76)。结论CTA对ASO患者的血管评估效能总体优于DUS,而对于腘下动脉段血管重度狭窄及闭塞仍需联合DUS综合评估,以制定最佳临床治疗方案。展开更多
文摘Dual-energy X-ray absorptiometry provides two modes of head computed tomography （CT） angiography scanning： neuro-digital subtraction angiography and dual-energy CT angiography （DE-CTA）. Previous studies have compared image quality, radiation exposure, and bone removal between neuro-digital subtraction angiography and DE-CTA. However, the number of cases was relatively small. The present study examined 300 suspected cases of cerebrovascular disease and observed the methods and duration of post-processing, examination time, and data volume. Results demonstrated similar image quality between the two methods, but lower radiation doses and shorter examination time in DE-CTA. DE-CTA allowed for faster and more stable scanning performance and post-processing methods, facilitating accurate and direct diagnosis of cerebrovascular disease.
文摘目的探讨CT血管造影(CTA)与多普勒超声(DUS)检查在下肢动脉硬化性闭塞症(ASO)中的诊断效能。方法选取我院经数字减影血管造影(DSA)检查并接受腔内血管成形术治疗的80例ASO患者。以DSA作为金标准,对比患者术前CTA及DUS诊断ASO的效能及一致性。结果CTA对全段下肢动脉及髂动脉段≥50%血管狭窄及闭塞的检出率分别较DUS高4.89%(P=0.002)和2.29%(P=0.007)。CTA对下肢全段≥50%血管狭窄及腘上动脉段管腔闭塞的诊断效能及一致性均高于DUS(敏感性:81.47%~96.84%vs 80.35%~89.66%;特异性82.39%~90.75%vs 82.16%~87.25%;Kappa值:0.82~0.98 vs 0.79~0.94),而对腘下动脉段血管闭塞的评估表现不及DUS(敏感性:77.83%vs 78.49%;特异性:72.15%vs 79.28%;Kappa值:0.72 vs 0.76)。结论CTA对ASO患者的血管评估效能总体优于DUS,而对于腘下动脉段血管重度狭窄及闭塞仍需联合DUS综合评估,以制定最佳临床治疗方案。
