于阳,杨旗,杨晓旭,吴芳,齐志刚,卢洁.基于DANTE预脉冲SPACE MR序列定量评价蛛网膜颗粒[J].中国医学影像技术,2019,35(4):592~595 |
基于DANTE预脉冲SPACE MR序列定量评价蛛网膜颗粒 |
DANTE prepulse SPACE MR sequence in quantitative evaluation of arachnoid granules |
投稿时间:2018-10-18 修订日期:2019-01-08 |
DOI:10.13929/j.1003-3289.201810095 |
中文关键词: 蛛网膜颗粒 磁共振成像 延迟交变章动调整激发 |
英文关键词:arachnoid granulations magnetic resonance imaging delay alternating with nutation for tailored excitation |
基金项目:国家自然科学基金优秀青年科学基金项目(81522021)、国家重点研发计划(2016YFC1301702、2016YFC0107107)、北京市医院管理局"登峰"计划专项(DFL20180802)。 |
作者 | 单位 | E-mail | 于阳 | 首都医科大学宣武医院 放射科, 北京 100053 磁共振成像脑信息学北京市重点实验室, 北京 100053 | | 杨旗 | 首都医科大学宣武医院 放射科, 北京 100053 磁共振成像脑信息学北京市重点实验室, 北京 100053 | | 杨晓旭 | 首都医科大学宣武医院 放射科, 北京 100053 磁共振成像脑信息学北京市重点实验室, 北京 100053 | | 吴芳 | 首都医科大学宣武医院 放射科, 北京 100053 磁共振成像脑信息学北京市重点实验室, 北京 100053 | | 齐志刚 | 首都医科大学宣武医院 放射科, 北京 100053 磁共振成像脑信息学北京市重点实验室, 北京 100053 | | 卢洁 | 首都医科大学宣武医院 放射科, 北京 100053 磁共振成像脑信息学北京市重点实验室, 北京 100053 | imaginglu@hotmail.com |
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中文摘要: |
目的 评价基于DANTE预脉冲SPACE定量评价蛛网膜颗粒的价值。方法 纳入头颅影像学检查证实存在蛛网膜颗粒的30例患者,分别进行SPACE序列成像和基于DANTE预脉冲的SPACE序列成像。评价SPACE序列图像和DANTE-SPACE序列图像中静脉窦内和颅板下蛛网膜颗粒分布特征,并进行定量测量,包括最大横截面积、最长径、SNR和CNR。比较两种方法获得各测量指标的统计学差异。结果 采用SPACE序列发现43个蛛网膜颗粒,位于静脉窦内29个,颅板下14个;DANTE-SPACE序列检出45个蛛网膜颗粒,其中位于静脉窦内31个,颅板下14个。SPACE和DANTE-SPACE序列显示蛛网膜颗粒分布特征差异无统计学意义(χ2=0.155,P=0.997)。SPACE和DANTE-SPACE序列测量静脉窦腔内蛛网膜颗粒最大横截面积[(32.55±17.08) mm2,(29.15±16.24) mm2]、最长径[(7.13±2.00) mm,(6.42±1.81) mm]、SNR (88.82±29.57,83.30±32.11)、CNR (45.99±28.57,65.33±30.96)差异均有统计学意义(P均<0.05),测量颅板下蛛网膜颗粒最大横截面积[(21.62±9.01) mm2,(21.83±9.04) mm2]、最长径[(6.74±2.83) mm,(6.66±2.87) mm]、SNR (86.91±35.48,76.82±36.20)、CNR (16.87±6.32,20.07±12.76)差异均无统计学意义(P均>0.05)。结论 基于DANTE预脉冲SPACE序列可有效抑制静脉窦内的慢血流伪影,更精准地显示蛛网膜颗粒。 |
英文摘要: |
Objective To explore the value of delay alternating with nutation for tailored excitation (DANTE)-sampling perfection with application optimized contrast using different flip-angle evolution (SPACE) sequences in quantitative evaluation of arachnoid granules (AG). Methods Thirty patients with arachnoid granules confirmed by conventional imaging were enrolled. All patients underwent SPACE and DANTE-SPACE sequences scanning. Distribution characteristics of arachnoid particles in sinus cavities and cranial plate on SPACE and DANTE-SPACE sequence images were evaluated, and the measurements were performed and statistically analyzed, including maximum cross-sectional area, longest diameter, SNR and CNR. Results A total of 43 arachnoid particles were detected with SPACE sequence, 29 in the sinus cavities and 14 in the cranial plate, while 45 arachnoid particles were found with DANTE-SPACE, 31 in the sinus cavities and 14 in the cranial plate. SPACE and DANTE-SPACE sequences showed no statistically significant difference in distribution of arachnoid particles (χ2=0.155, P=0.997). In the sinus cavity, SPACE and DANTE-SPACE sequences showed significant differences of the maximum cross-sectional area ([32.55±17.08]mm2,[29.15±16.24]mm2), the longest diameter ([7.13±2.00]mm,[6.42±1.81]mm), SNR (88.82±29.57, 83.30±32.11) and CNR (45.99±28.57, 65.33±30.96) of arachnoid particles (all P<0.05), but no statistical difference was found in maximum cross-sectional area ([21.62±9.01]mm2 and[21.83±9.04]mm2), longest diameter ([6.74±2.83)mm,[6.66±2.87]mm), SNR(86.91±35.48, 76.82±36.20) nor CNR(16.87±6.32, 20.07±12.76) in the cranial plate (all P>0.05). Conclusion DANTE-SPACE can effectively inhibit slow blood flow artifacts in the sinus, and accurately display arachnoid particles. |
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