CN105686845A - 一种主动脉mscta图像最佳对比剂用量的试验方法 - Google Patents
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Abstract
本发明涉及一种主动脉MSCTA图像最佳对比剂用量的试验方法,该试验方法的具体步骤如下:(1)搜集疑似主动脉病变的病例行主动脉MSCTA检查,根据对比剂用量的不同分为不同的组别,所采用的对比剂为碘帕醇;(2)采用多层螺旋CT进行扫描;(3) CT原始数据均传至工作站,进行图像重组,并测量升主动脉、T7及L2水平降主动脉、主动脉分叉处CT值;(4)对血管强化程度、主要分支血管显示清晰度进行评价;(5)比较不同剂量组间的差异,找到一种使用较少对比剂量,但又不影响图像质量的最佳方案。本发明的优点在于:通过本发明的试验方法,选择最优方案,降低对比剂用量,减少对比剂肾病的发生率,同时,减轻患者的经济负担及减少不必要的医疗资源浪费。
Description
技术领域
本发明涉及主动脉MSCTA图像研究领域,特别涉及一种主动脉MSCTA图像最佳对比剂用量的试验方法。
背景技术
随着人们生活及饮食习惯的改变,主动脉病变的发病率呈明显上升趋势。目前作为主动脉病变辅助诊断的方法主要有超声心动图、多层螺旋CT血管成像(multi-sliceCTangiography,MSCTA)、磁共振血管成像(magneticresonanceangiography,MRA)和数字减影血管造影(DigitalSubtractionAngiography,DSA)。
超声心动图的优势在于不受肺组织及肥胖的干扰,可以清晰地显示主动脉壁内的微细病变及其腔内血流情况。但其对降主动脉检查时,常不经过胸骨上窝、锁骨上窝探查,易造成假阴性的结果。
MRA有较高的敏感性和特异性,但对于急诊患者,其图像采集时间长的弊端可能会延误治疗,且对于主动脉及内膜片钙化显示不如CT。
一直以来,DSA血管造影被称为诊断主动脉病变的“金标准”,但其不足之处在于对假腔、内膜片等情况显示率不及CT,尤其是假腔内血栓形成时,逆行血管造影将受限。且由于DSA具有创伤性和较高的费用,目前就主动脉病变的诊断而言,已较少应用。
相反,随着多层螺旋CT的快速发展,由于其创伤小,费用低,而且扫描速度快,图像分辨率高,使其在主动脉病变的临床诊断中占据了越来越重要的位置。主动脉MSCTA不但可以了解主动脉病变及其分支受累情况,还可以同时观察主动脉管壁及其周围结构。其图像直观、清晰度高,对临床怀疑的主动脉真、假性动脉瘤,主动脉夹层、主动脉壁内血肿及主动脉变异等具有很高的诊断价值。因此,在很多医疗机构,MSCTA已成为主动脉病变诊断首选的影像检查手段,甚至被认为可作为影像诊断的金标准。
当然,多层螺旋CT主动脉成像如同其他增强CT扫描需要注射对比剂,且对比剂用量可影响MSCTA图像的质量。但对比剂对人体有一定的危害性,因此如何兼顾对比剂量与图像质量的关系,成为国内外心血管无创成像的研究热点之一。
发明内容
本发明要解决的技术问题是提供一种主动脉MSCTA图像最佳对
比剂用量的试验方法,通过比较注射不同剂量的对比剂对主动脉图像质量的影响,从而选择最优方案,降低对比剂用量,减少对比剂肾病的发生率,同时,减轻患者的经济负担及减少不必要的医疗资源浪费。
为解决上述技术问题,本发明的技术方案为:一种主动脉MSCTA图像最佳对比剂用量的试验方法,其创新点在于:所述试验方法的具体步骤如下:
(1)搜集疑似主动脉病变的病例行主动脉MSCTA检查,检查前禁食4~6h,然后根据60kg以上患者,碘帕醇对比剂量为60ml~80ml,60kg以下患者,按1ml/kg使用碘帕醇对比剂量分为不同的组别;
(2)采用多层螺旋CT进行扫描,扫描参数为:管电压120kV,管电流110mAs,准直器宽度64x0.6mm,螺距1.5,重建层厚0.75mm,重建增量0.5mm,采用双筒高压注射器经肘前静脉注射370mgI/m1的碘帕醇注射液,注射速率5ml/s,延迟时间采用自动触发技术,触发点选择在T7水平降主动脉,触发阈值100HU,然后自肺尖至耻骨联合水平扫描;
(3)CT原始数据均传至工作站,进行图像重组,并测量升主动脉、T7及L2水平降主动脉、主动脉分叉处CT值;
(4)选择最佳视角多方位显示主动脉及其主要分支血管,并对血管强化程度、主要分支血管显示清晰度进行评价;
(5)比较不同剂量组间的差异,找到一种使用较少对比剂量,但又不影响图像质量的最佳方案。
进一步地,所述步骤(3)中图像重组主要为容积再现、最大密度投影和多平面重组。
本发明的优点在于:本发明的试验方法,通过在管电压120kV,管电流110mAs,准直器宽度64x0.6mm,螺距1.5,重建层厚0.75mm,重建增量0.5mm,采用双筒高压注射器经肘前静脉注射370mgI/m1的碘帕醇注射液,注射速率5ml/s,延迟时间采用自动触发技术,触发点选择在T7水平降主动脉,触发阈值100HU的扫描条件下,比较注射不同剂量的对比剂对主动脉图像质量的影响,选择最优方案,进而降低对比剂用量,减少对比剂肾病的发生率,同时,减轻患者的经济负担及减少不必要的医疗资源浪费。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图1是实施例1的MSCTA图像的主视图。
图2是实施例1的MSCTA图像的侧视图。
图3是实施例2的MSCTA图像的主视图。
图4是实施例2的MSCTA图像的侧视图。
图5是实施例3的MSCTA图像的主视图。
图6是实施例3的MSCTA图像的侧视图。
具体实施方式
下面的实施例可以使本专业的技术人员更全面地理解本发明,但并不因此将本发明限制在所述的实施例范围之中。
实施例1
患者体质量76kg,使用80ml对比剂,对比剂为370mgI/ml的碘帕醇,注射速率5ml/s,延迟时间采用自动触发技术,主动脉强化明显,分支血管显示清晰。
实施例2
患者体质量72kg,使用70ml对比剂,对比剂为370mgI/ml的碘帕醇,注射速率5ml/s,延迟时间采用自动触发技术,主动脉、分支血管显示清晰。
实施例3
患者体质量75kg,使用60ml对比剂,对比剂为370mgI/ml的碘帕醇,注射速率5ml/s,延迟时间采用自动触发技术,血管强化程度较前两者稍低,但主动脉、分支血管显示清晰。
实施例4
不同对比剂用量对主动脉MSCTA图像质量影响:
(1)行主动脉血管成像检查的影像资料60例,其中男37例,女23例,年龄37-79岁,平均年龄56.30岁,体重41-86kg,平均67.23kg。根据对比剂用量的不同分为A、B、C组,每组20例。A组对比剂量80ml+生理盐水20ml冲洗;B组对比剂量70ml+生理盐水30ml冲洗;C组对比剂量60ml+生理盐水40ml冲洗。
(2)三组主动脉强化情况(HU)
表1三组主动脉强化情况(HU)
注:三组病例在升主动脉、T7及L2水平降主动脉、主动脉分叉处平均强化程度差异无统计学意义。
(3)三组重组图像质量评价情况
三组重组图像质量评价情况
注:三组间重组图像质量差异无统计学意义(P>0.05)。
(4)结果显示,主动脉MSCTA中使用低对比剂量60ml+生理盐水40ml冲洗,主动脉强化满意,重组图像质量满意,且使用了较低对比剂的用量,此结果与文献报道的研究结果基本一致。
实施例4
不同对比剂用量对主动脉MSCTA图像质量影响:
(1)主动脉MSCTA检查的影像资料共60例,其中男36例,女24例,年龄18~86岁,平均(57.11±3.38)岁。根据体质量不同分为A(60kg以上,含60kg)、B(60kg以下)两组,A组、B组体质量平均为(72.10±6.76)kg、(53.34±3.92)kg。对比剂注射方案分别为A组:对比剂浓度370mgI/mL,注射速率5mL/s,一次性注入对比剂60mL,后用40mL生理盐水冲洗;B组:对比剂浓度370mgI/mL,注射速率相同,按1mL/kg注射对比剂后,注射适量生理盐水冲洗,保证液体总量100ml。
(2)使用SiemensSomatomSensation64层螺旋CT。先行平扫,初步观察主动脉及胸腹部情况。扫描范围从肺尖至耻骨联合水平。扫描参数为:管电压120kV,管电流110mAs,准直器宽度64x0.6mm,螺距1.5,重建层厚0.75mm,重建增量0.5mm。后行增强扫描,对比剂为碘帕醇注射液(370mgI/m1),采用双筒高压注射器经肘前静脉注射,注射速率5ml/s。延迟时间采用自动触发技术,触发点选择在T7水平降主动脉,触发阈值100HU。触发延迟时间5s。生理盐水的使用量与对比剂用量相加为100ml,以保证每组液体总量的一致。CT原始数据传至后处理工作站进行图像重组,每个病例均在轴位图像测量升主动脉、T7及L2水平降主动脉、主动脉分叉处CT值。数值均表示为均数±标准差。选择最佳视角多方位显示主动脉及腹腔干、肠系膜上动脉、双侧肾动脉等主要分支。主动脉及主要分支血管显示不清晰,边缘模糊,评为图像不达标;主动脉及主要分支血管显示清晰,边缘锐利,评为图像达标。
(3)两组主动脉强化程度及血管横截面直径比较
两组血管强化CT值及血管横截面直径
A组、B组主动脉强化平均值分别为383.19HU,391.58HU,差异无统计学意义(t=0.198,P>0.05)。
(4)两组重组图像质量评价情况
注:两组间重组图像质量差异无统计学意义(P>0.05)。
(5)研究结果显示,A、B两组的主动脉强化程度,重组图像的清晰度差异无统计学意义,因此,对于小于60kg患者,按1mL/kg对比剂量进行主动脉MSCTA是可行的,可进一步减少对比剂用量,值得临床推广。
本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (2)
1.一种主动脉MSCTA图像最佳对比剂用量的试验方法,其特征在于:
所述试验方法的具体步骤如下:
(1)搜集疑似主动脉病变的病例行主动脉MSCTA检查,检查前禁食4~6h,然后根据60kg以上患者,碘帕醇对比剂量为60ml~80ml,60kg以下患者,按1ml/kg使用碘帕醇对比剂量分为不同的组别;
(2)采用多层螺旋CT进行扫描,扫描参数为:管电压120kV,管电流110mAs,准直器宽度64x0.6mm,螺距1.5,重建层厚0.75mm,重建增量0.5mm,采用双筒高压注射器经肘前静脉注射370mgI/m1的碘帕醇注射液,注射速率5ml/s,延迟时间采用自动触发技术,触发点选择在T7水平降主动脉,触发阈值100HU,然后自肺尖至耻骨联合水平扫描;
(3)CT原始数据均传至工作站,进行图像重组,并测量升主动脉、T7及L2水平降主动脉、主动脉分叉处CT值;
(4)选择最佳视角多方位显示主动脉及其主要分支血管,并对血管强化程度、主要分支血管显示清晰度进行评价;
(5)比较不同剂量组间的差异,找到一种使用较少对比剂量,但又不影响图像质量的最佳方案。
2.根据权利要求1所述的主动脉MSCTA图像最佳对比剂用量的试验方法,其特征在于:所述步骤(3)中图像重组主要为容积再现、最大密度投影和多平面重组。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113331848A (zh) * | 2021-06-03 | 2021-09-03 | 宋培记 | 超低量对比剂在肾功能不全患者冠状动脉成像中的应用 |
CN114209918A (zh) * | 2022-01-18 | 2022-03-22 | 中南大学湘雅医院 | 高压注射器联动低阈值触发在主动脉cta中降低对比剂用量的应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040101090A1 (en) * | 2002-11-27 | 2004-05-27 | Danielle Drummond | Methods and apparatus for acquiring perfusion data |
CN101779963A (zh) * | 2010-02-23 | 2010-07-21 | 上海市第八人民医院 | 减影计算机体层灌注功能成像方法 |
-
2016
- 2016-01-13 CN CN201610019932.XA patent/CN105686845A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040101090A1 (en) * | 2002-11-27 | 2004-05-27 | Danielle Drummond | Methods and apparatus for acquiring perfusion data |
CN101779963A (zh) * | 2010-02-23 | 2010-07-21 | 上海市第八人民医院 | 减影计算机体层灌注功能成像方法 |
Non-Patent Citations (2)
Title |
---|
付传明 等: "低剂量对比剂在64排螺旋CT主动脉成像中的探讨", 《中国体视学与图像分析》 * |
蒋华东 等: "64层螺旋CT低剂量对比剂主动脉成像的可行性研究", 《医学影像学杂志》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113331848A (zh) * | 2021-06-03 | 2021-09-03 | 宋培记 | 超低量对比剂在肾功能不全患者冠状动脉成像中的应用 |
CN114209918A (zh) * | 2022-01-18 | 2022-03-22 | 中南大学湘雅医院 | 高压注射器联动低阈值触发在主动脉cta中降低对比剂用量的应用 |
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