Article Figures & Data
Figures
- Fig 1.
Anterior communicating artery aneurysm treated with coils. MRA at 1.5T (source images, A; MIP reconstruction, B) shows total occlusion of the aneurysm (white arrow). MRA at 3T (source images, C; MIP reconstruction, D) shows an aneurysm remnant (white arrow). DSA (anteroposterior view, E; lateral view, F shows the aneurysm remnant (white arrow).
Tables
- Table 1:
Anatomic results (adequate occlusion/aneurysm remnant) with 1.5T and 3T MRA versus DSA
DSA 1.5T 3T Total Adequate Occlusion Aneurysm Remnant Adequate Occlusion Aneurysm Remnant Adequate occlusion 89 2 85 6 91 Aneurysm remnant 16 19 9 26 35 Total 105 21 94 32 126 - Table 2:
Sensitivity, specificity, positive predictive value, and negative predictive value for 3T MRA and 1.5T MRA (DSA as the criterion standard): adequate occlusion/aneurysm remnant
SE (95% CI) Sp (95% CI) PPV (95% CI) NPV (95% CI) 3T MRA 0.74 (0.60–0.89) 0.93 (0.88–0.99) 0.81 (0.68–0.95) 0.90 (0.84–0.96) 1.5T MRA 0.54 (0.38–0.71) 0.98 (0.95–1.00) 0.90 (0.78–1.00) 0.85 (0.78–0.92) -
Note:—Sp = specificity.
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- Table 3:
Sensitivity, specificity, positive predictive value, and negative predictive value for 3T MRA and 1.5T MRA (DSA as the criterion standard): total occlusion/neck or aneurysm remnants
SE (95% CI) Sp (95% CI) PPV (95% CI) NPV (95% CI) 3T MRA 0.74 (0.63–0.84) 0.81 (0.71–0.91) 0.82 (0.72–0.92) 0.72 (0.61–0.83) 1.5T MRA 0.65 (0.53–0.76) 0.88 (0.80–0.96) 0.86 (0.77–0.96) 0.68 (0.57–0.79) -
Note:—Sp = specificity.
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