Article Figures & Data
Figures
- FIG 1.
A 56-year-old woman status post coil embolization of a posterior communicating artery aneurysm. Sagittal multiplanar reformats and volume-rendered images from TOF-MRA (A and B) and DISCO-MRA (C and D) in addition to sagittal projection and 3D from DSA (white arrows in E and F) are shown. There is a recanalized aneurysm measuring approximately 5 mm (MRRC IIIB) seen on the DSA images (E and F). Note the location of the embolization coil mass (vertical arrow on F). The recanalized aneurysm is visualized with a similar size and conspicuity on DISCO-MRA (arrows on C and D), while it is not clearly seen on TOF-MRA (A and B).
- FIG 2.
A 70-year-old woman status post endovascular treatment of a left ICA bifurcation aneurysm. Coronal multiplanar reformats from TOF-MRA (A) and DISCO-MRA (B) and coronal-oblique DSA (C) are shown. There is a 6-mm residual neck (MRRC II) at the base of the coil embolization mass on DSA (arrow in C), which is also noted with a similar size and conspicuity on DISCO-MRA (arrow in B). The residual aneurysm neck is less conspicuous on TOF-MRA (arrow in A), where it was scored as MRRC I by 1 observer.
- FIG 3.
A 67-year-old woman with an aneurysm of the left supraclinoid ICA, treated with a Pipeline Embolization Device (Medtronic) stent. Sagittal oblique multiplanar reformats from TOF-MRA (A) and DISCO-MRA (B) and sagittal-oblique DSA (C) are shown. There is a 4-mm residual aneurysm (MRRC IIIb) projecting superior to the stent on DSA (arrow in C), which is also noted with similar size and conspicuity on DISCO-MRA (arrow in B). The residual aneurysm is less conspicuous on TOF-MRA (arrow in A), where it was scored as MRRC I by one observer and II by the other.
- FIG 4.
A 57-year-old woman with an aneurysm of the right supraclinoid ICA, treated with coil embolization. Sagittal oblique multiplanar reformats from DISCO-MRA (A) and TOF-MRA (B) are shown. There is a 3-mm posteriorly projecting residual aneurysm at the base of coil embolization noted on DISCO-MRA (arrow in A), which was acquired during a 6-second acquisition time. Note that the residual aneurysm is not well-evaluated on the concurrent motion-degraded TOF-MRA, which was obtained during an approximately 6-minute acquisition time.
Tables
Characteristics Female (No.) (%) 59 (86) Age (mean) (yr) 59.4 (SD, 11.4) Aneurysm location Internal carotid artery (No.) (%) 28 (41) Anterior cerebral artery (No.) (%) 3 (4) Anterior communicating artery (No.) (%) 8 (12) Middle cerebral artery (No.) (%) 4 (6) Posterior communicating artery (No.) (%) 17 (25) Posterior circulationa (No.) (%) 8 (12) Endovascular treatment Stent only (No.) (%) 6 (9) Coil only (No.) (%) 34 (50) Stent-assisted coil (No.) (%) 28 (41) ↵a Includes aneurysms involving the posterior cerebral artery (n = 1), vertebral artery (n = 3), and basilar artery (n = 4).
DSA DISCO-MRA TOF-MRA I II IIIa IIIb Total I II IIIa IIIb Total I 32 1 0 0 33 (49) 32 1 0 0 33 (49) II 2 15 3 0 20 (29) 11 9 0 0 20 (29) IIIA 0 2 6 0 8 (12) 1 4 3 0 8 (12) IIIB 0 0 0 7 7 (10) 1 4 0 2 7 (10) Total 34 (50) 18 (26) 9 (13) 7 (10) 68 (100) 45 (66) 18 (26) 3 (4) 2 (3) 68 (100) ↵a Data are presented as counts with percentages in parenthesis.
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