BACKGROUND AND PURPOSE: During surgery of symptomatic aneurysms, additional small angiographic occult aneurysms are commonly found. With 3D rotational angiography (3DRA) small aneurysms are more easily depicted than with digital subtraction angiography (DSA). In this study we compare 3DRA with DSA in the depiction of small additional aneurysms. MATERIALS AND METHODS: Three hundred fifty 3D datasets of 1 vascular tree of 350 patients with at least 1 intracranial aneurysm on the dataset were re-evaluated for the presence of additional aneurysms by 2 observers in consensus. Two other observers, blinded to the 3D images, re-evaluated DSA images of the same 350 vascular trees for these additional aneurysms. Results were compared. RESULTS: In 350 3D datasets, 350 target aneurysms and 94 additional aneurysms were detected. The mean size of 94 additional aneurysms was 3.54 mm (median, 3; range, 0.5-17 mm). The proportion of aneurysms <or=3 mm was significantly higher in additional aneurysms (61 of 94, 65%) than in the target aneurysms (61 of 350, 17%) (chi(2), P < .0001). Of 94 additional aneurysms, 27 (29%) were missed on DSA by both observers. The mean size of the missed aneurysms was 1.94 mm (median, 2; range, 0.5-4 mm). The proportion of aneurysms <or=3 mm in missed additional aneurysms (26 of 27, 96%) was significantly higher than that in all additional aneurysms (61 of 94, 65%) (chi(2), P = .0035). The location of missed additional aneurysms was not different from the location of all additional aneurysms. CONCLUSION: 3DRA depicts considerably more small (<or=3 mm) additional aneurysms than DSA. In selected patients, accurate detection of these aneurysms may have consequences for the choice of treatment technique and for the frequency and duration of imaging follow-up.
BACKGROUND AND PURPOSE: During surgery of symptomatic aneurysms, additional small angiographic occult aneurysms are commonly found. With 3D rotational angiography (3DRA) small aneurysms are more easily depicted than with digital subtraction angiography (DSA). In this study we compare 3DRA with DSA in the depiction of small additional aneurysms. MATERIALS AND METHODS: Three hundred fifty 3D datasets of 1 vascular tree of 350 patients with at least 1 intracranial aneurysm on the dataset were re-evaluated for the presence of additional aneurysms by 2 observers in consensus. Two other observers, blinded to the 3D images, re-evaluated DSA images of the same 350 vascular trees for these additional aneurysms. Results were compared. RESULTS: In 350 3D datasets, 350 target aneurysms and 94 additional aneurysms were detected. The mean size of 94 additional aneurysms was 3.54 mm (median, 3; range, 0.5-17 mm). The proportion of aneurysms <or=3 mm was significantly higher in additional aneurysms (61 of 94, 65%) than in the target aneurysms (61 of 350, 17%) (chi(2), P < .0001). Of 94 additional aneurysms, 27 (29%) were missed on DSA by both observers. The mean size of the missed aneurysms was 1.94 mm (median, 2; range, 0.5-4 mm). The proportion of aneurysms <or=3 mm in missed additional aneurysms (26 of 27, 96%) was significantly higher than that in all additional aneurysms (61 of 94, 65%) (chi(2), P = .0035). The location of missed additional aneurysms was not different from the location of all additional aneurysms. CONCLUSION: 3DRA depicts considerably more small (<or=3 mm) additional aneurysms than DSA. In selected patients, accurate detection of these aneurysms may have consequences for the choice of treatment technique and for the frequency and duration of imaging follow-up.
Authors: R Anxionnat; S Bracard; X Ducrocq; Y Trousset; L Launay; E Kerrien; M Braun; R Vaillant; F Scomazzoni; A Lebedinsky; L Picard Journal: Radiology Date: 2001-03 Impact factor: 11.105
Authors: Mahesh V Jayaraman; William W Mayo-Smith; Glenn A Tung; Richard A Haas; Jeffrey M Rogg; Neerav R Mehta; Curtis E Doberstein Journal: Radiology Date: 2003-12-29 Impact factor: 11.105
Authors: A J Geers; I Larrabide; A G Radaelli; H Bogunovic; M Kim; H A F Gratama van Andel; C B Majoie; E VanBavel; A F Frangi Journal: AJNR Am J Neuroradiol Date: 2010-12-23 Impact factor: 3.825
Authors: Sahar S Esfahani; Xiaojun Zhai; Minsi Chen; Abbes Amira; Faycal Bensaali; Julien AbiNahed; Sarada Dakua; Georges Younes; Abdulla Baobeid; Robin A Richardson; Peter V Coveney Journal: Int J Comput Assist Radiol Surg Date: 2020-03-04 Impact factor: 2.924
Authors: Yon Kwon Ihn; Bum-Soo Kim; Jun Soo Byun; Sang Hyun Suh; Yoo Dong Won; Deok Hee Lee; Byung Moon Kim; Young Soo Kim; Pyong Jeon; Chang-Woo Ryu; Sang-Il Suh; Dae Seob Choi; See Sung Choi; Jin Wook Choi; Hyuk Won Chang; Jae-Wook Lee; Sang Heum Kim; Young Jun Lee; Shang Hun Shin; Soo Mee Lim; Woong Yoon; Hae Woong Jeong; Moon Hee Han Journal: Neurointervention Date: 2016-09-03