膈下动脉CT成像中碘总量固定不同碘流率对成像的影响

发布时间：2018-08-07 07:06

【摘要】：目的比较碘总量固定情况下不同碘流率(IDR)对膈下动脉(IPA)CT成像的影响。方法选取行腹部CT血管成像(CTA)患者60例,碘总量为350 mg I/kg,随机分为A、B、C组,每组20例。A组:碘浓度300 mg I/m L,注射流率5 m L/s,IDR 1 500 mg I/s;B组:碘浓度350 mg I/m L,注射流率4.3 m L/s,IDR 1 505 mg I/s;C组:碘浓度370 mg I/m L,注射流率4.3 m L/s,IDR 1 591 mg I/s。记录各组IPA各级血管的显示情况及图像质量,测量各组RIPA一级血管及二级血管的CT值。结果 A组和B组IPA各级血管的显示、图像质量、RIPA一级和二级血管的CT值差异无统计学意义(P0.05);C组IPA三级血管及其以上分支的显示及图像质量高于A组和B组,差异有统计学意义(P0.05);C组RIPA一级和二级血管的CT值高于A组和B组,差异有统计学意义(P0.05)。结论碘总量固定情况下,IDR增加使得IPA强化程度增高,图像质量提高,有助于IPA三级及其以上分支能更好地显示。
[Abstract]:Objective to compare the effect of different iodine flow rate (IDR) on (IPA) CT imaging of inferior phrenic artery under fixed iodine content. Methods 60 patients with abdominal CT angiography (CTA) were randomly divided into two groups: the total iodine content was 350mg / kg, and the total iodine content was 350mg / kg. Each group consisted of 20 cases. Group A: iodine concentration 300 mg I / m L, injection rate 5 mL / sIDR 1 500 mg I / sL, group B: iodine concentration 350 mg I / m L, injection rate 4.3 mL / s / s IDR 1 505 mg / I / ml, Group C: iodine concentration 370 mg / I / mL, injection rate 4.3 mL / sIDR 1 591 mg / m / s. The display and image quality of IPA blood vessels were recorded, and the CT values of the primary and secondary blood vessels of RIPA in each group were measured. Results there was no significant difference in image quality between group A and group B in the display of blood vessels at different levels of IPA. There was no significant difference in CT value between group A and group B (P0.05). The display and image quality of three or more branches of IPA in group C were higher than those in group A and group B. The difference was statistically significant (P0.05). The CT value of RIPA in group C was higher than that in group A and group B. the difference was statistically significant (P0.05). Conclusion under the condition of fixed iodine content, the enhancement degree of IPA is increased and the image quality is improved with the increase of IDR, which is helpful for the better display of IPA grade III and above branches.
【作者单位】：河北联合大学附属医院CT室;河北联合大学附属医院核医学科;
【分类号】：R816.2

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