TY - JOUR
T1 - Differential Subsampling with Cartesian Ordering–MRA for Classifying Residual Treated Aneurysms
AU - Shahrouki, P.
AU - Gupta, R.
AU - Belani, P.
AU - Chien, A.
AU - Doshi, A. H.
AU - De Leacy, R.
AU - Fifi, J. T.
AU - Mocco, J.
AU - Nael, K.
N1 - Funding Information:
Received September 11, 2021; accepted after revision April 14, 2022. From the Department of Radiological Sciences (P.S., A.C., K.N.), University of California Los Angeles, Los Angeles, California; and Departments of Radiology (R.G., P.B., A.H.D., K.N.) and Neurosurgery (R.D.L., J.T.F., J.M.), Icahn School of Medicine at the Mount Sinai Hospital, New York, New York. This work was supported by the National Institutes of Health (NIH R01HL152270) for Aichi Chien. Please address correspondence to Kambiz Nael, MD, Department of Radiological Sciences, University of California Los Angeles, 757 Westwood Plaza, Suite 1621, Los Angeles, CA 90095–7532; e-mail: kambiznael@gmail.com; @KambizNael
Publisher Copyright:
© 2022 American Society of Neuroradiology. All rights reserved.
PY - 2022/6/1
Y1 - 2022/6/1
N2 - BACKGROUND AND PURPOSE: Differential Subsampling with Cartesian Ordering (DISCO), an ultrafast high-spatial-resolution head MRA, has been introduced. We aimed to determine the diagnostic performance of DISCO-MRA in grading residual aneurysm in comparison with TOF-MRA in patients with treated intracranial aneurysms. MATERIALS AND METHODS: Patients with endovascular treatment and having undergone DISCO-MRA, TOF-MRA, and DSA were included for review. The voxel size and acquisition time were 0.75 × 0.75 × 1 mm3/6 seconds for DISCO-MRA and 0.6 × 0.6 × 1 mm3/6 minutes for TOF-MRA. Residual aneurysms were determined using the Modified Raymond-Roy Classification on TOF-MRA and DISCO-MRA by 2 neuroradiologists independently and were compared against DSA as the reference standard. Statistical analysis was performed using the k statistic and the x 2 test. RESULTS: Sixty-eight treated intracranial aneurysms were included. The intermodality agreement was k = 0.82 (95% CI, 0.67–0.97) between DISCO and DSA and 0.44 (95% CI, 0.28–0.61) between TOF and DSA. Modified Raymond-Roy Classification scores matched DSA scores in 60/68 cases (88%; x 2 = 144.4, P, .001 for DISCO and 46/68 cases (68%; x 2 = 65.0, P, .001) for TOF. The diagnostic accuracy for the detection of aneurysm remnants was higher for DISCO (0.96; 95% CI, 0.88–0.99) than for TOF (0.79; 95% CI, 0.68–0.88). CONCLUSIONS: In patients with endovascularly treated intracranial aneurysms, DISCO-MRA provides superior diagnostic performance in comparison with TOF-MRA in delineating residual aneurysms in a fraction of the time.
AB - BACKGROUND AND PURPOSE: Differential Subsampling with Cartesian Ordering (DISCO), an ultrafast high-spatial-resolution head MRA, has been introduced. We aimed to determine the diagnostic performance of DISCO-MRA in grading residual aneurysm in comparison with TOF-MRA in patients with treated intracranial aneurysms. MATERIALS AND METHODS: Patients with endovascular treatment and having undergone DISCO-MRA, TOF-MRA, and DSA were included for review. The voxel size and acquisition time were 0.75 × 0.75 × 1 mm3/6 seconds for DISCO-MRA and 0.6 × 0.6 × 1 mm3/6 minutes for TOF-MRA. Residual aneurysms were determined using the Modified Raymond-Roy Classification on TOF-MRA and DISCO-MRA by 2 neuroradiologists independently and were compared against DSA as the reference standard. Statistical analysis was performed using the k statistic and the x 2 test. RESULTS: Sixty-eight treated intracranial aneurysms were included. The intermodality agreement was k = 0.82 (95% CI, 0.67–0.97) between DISCO and DSA and 0.44 (95% CI, 0.28–0.61) between TOF and DSA. Modified Raymond-Roy Classification scores matched DSA scores in 60/68 cases (88%; x 2 = 144.4, P, .001 for DISCO and 46/68 cases (68%; x 2 = 65.0, P, .001) for TOF. The diagnostic accuracy for the detection of aneurysm remnants was higher for DISCO (0.96; 95% CI, 0.88–0.99) than for TOF (0.79; 95% CI, 0.68–0.88). CONCLUSIONS: In patients with endovascularly treated intracranial aneurysms, DISCO-MRA provides superior diagnostic performance in comparison with TOF-MRA in delineating residual aneurysms in a fraction of the time.
UR - http://www.scopus.com/inward/record.url?scp=85131471033&partnerID=8YFLogxK
U2 - 10.3174/ajnr.A7532
DO - 10.3174/ajnr.A7532
M3 - Article
C2 - 35672082
AN - SCOPUS:85131471033
VL - 43
SP - 887
EP - 892
JO - American Journal of Neuroradiology
JF - American Journal of Neuroradiology
SN - 0195-6108
IS - 6
ER -