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<p>Silent magnetic resonance angiography (S-MRA) is primarily utilized to assess the blood flow in aneurysms and parent vessels of treated intracranial aneurysms. This study aimed to compare the diagnostic value of S-MRA and three-dimensional time of flight (3D-TOF) MRA for unruptured intracranial aneurysms. We included patients diagnosed with unruptured intracranial aneurysms using digital subtraction angiography (DSA) who subsequently underwent S-MRA and 3D-TOF MRA. Two independent neuroimaging and neurointerventional doctors evaluated the DSA images and measured aneurysm dimensions. Using DSA results as the gold standard, we determined the sensitivity and specificity of S-MRA and 3D-TOF MRA, as well as their accuracy in measuring aneurysm size and identifying aneurysms with daughter sacs. We detected a total of 41 intracranial aneurysms (in 37 patients) on both S-MRA and 3D-TOF MRA, with both techniques achieving a sensitivity and specificity of 100%. For aneurysm height, the intraclass correlation coefficient (ICC) was 0.977 (<i>P</i> &lt; 0.001) between S-MRA and DSA, and 0.908 (<i>P</i> &lt; 0.001) between 3D-TOF MRA and DSA. For neck width, the ICC was 0.663 (<i>P</i> &lt; 0.001) between S-MRA and DSA, and 0.563 (<i>P</i> &lt; 0.001) between 3D-TOF MRA and DSA. <i>In terms of daughter aneurysm detection</i>,<i> 3D-TOF MRA Sensitivity 40%; specificity 92%: positive predictive value 100%; S-MRA sensitivity 60%; specificity 89%; positive predictive value 42%.</i> In conclusion, S-MRA and 3D-TOF MRA did not significantly differ in aneurysm detection ability. For the detection of aneurysm with dauthger sacs indicators, <i>the sensitivity is also higher.</i></p>

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Silent magnetic resonance angiography diagnostic value of intracranial unruptured aneurysms

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月7日

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  • Bin Lv,
  • Tingyang Zhang,
  • Ning Wang,
  • Lu Liu,
  • Mingyu Li,
  • Meng Li,
  • Mingguang Sun,
  • Xiao Zang,
  • Xinfeng Liu,
  • Rongju Zhang,
  • Xiangyu Cao,
  • Zhihua Du,
  • Jun Wang,
  • Jinhao Lyu,
  • Xueyang Wang,
  • Qi Duan,
  • Fangfang Guo,
  • Xin Lou,
  • Chenglin Tian

摘要

Silent magnetic resonance angiography (S-MRA) is primarily utilized to assess the blood flow in aneurysms and parent vessels of treated intracranial aneurysms. This study aimed to compare the diagnostic value of S-MRA and three-dimensional time of flight (3D-TOF) MRA for unruptured intracranial aneurysms. We included patients diagnosed with unruptured intracranial aneurysms using digital subtraction angiography (DSA) who subsequently underwent S-MRA and 3D-TOF MRA. Two independent neuroimaging and neurointerventional doctors evaluated the DSA images and measured aneurysm dimensions. Using DSA results as the gold standard, we determined the sensitivity and specificity of S-MRA and 3D-TOF MRA, as well as their accuracy in measuring aneurysm size and identifying aneurysms with daughter sacs. We detected a total of 41 intracranial aneurysms (in 37 patients) on both S-MRA and 3D-TOF MRA, with both techniques achieving a sensitivity and specificity of 100%. For aneurysm height, the intraclass correlation coefficient (ICC) was 0.977 (P < 0.001) between S-MRA and DSA, and 0.908 (P < 0.001) between 3D-TOF MRA and DSA. For neck width, the ICC was 0.663 (P < 0.001) between S-MRA and DSA, and 0.563 (P < 0.001) between 3D-TOF MRA and DSA. In terms of daughter aneurysm detection, 3D-TOF MRA Sensitivity 40%; specificity 92%: positive predictive value 100%; S-MRA sensitivity 60%; specificity 89%; positive predictive value 42%. In conclusion, S-MRA and 3D-TOF MRA did not significantly differ in aneurysm detection ability. For the detection of aneurysm with dauthger sacs indicators, the sensitivity is also higher.