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1/2018
vol. 83 abstract:
Original paper
Time-resolved magnetic resonance angiography as a follow-up method for visceral artery aneurysm treated with coil-embolisation
Tatsuya Kawai
,
Masashi Shimohira
,
Kazushi Suzuki
,
Kengo Ohta
,
Kenichiro Kurosaka
,
Takuya Hashizume
,
Hiroko Nishikawa
,
Masahiro Muto
,
Nobuyuki Arai
,
Hirohito Kan
,
Yuta Shibamoto
© Pol J Radiol 2018; 83: e137-e142
Online publish date: 2018/04/10
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Purpose
The purpose of this study is to assess the feasibility and usefulness of time-resolved magnetic resonance angiography (TR-MRA) for follow-up of visceral artery aneurysms (VAAs) after embolotherapy. Material and methods Twenty-one VAAs (11 splenic, six renal, three internal iliac, and one superior pancreaticoduodenal artery aneurysms) in 18 patients (median age, 64 years; range, 36-88 years) previously treated by embolisation with platinum coils, were evaluated. The mean size of the aneurysm was 10.5 cm3 (range, 0.3-132 cm3). Among them, 19 lesions were treated by aneurysmal packing with or without distal-to-proximal embolisation. For the remaining two lesions, distal-to-proximal embolization alone was performed. The mean observation period after embolotherapy was 35 weeks (range, 4-216). All patients underwent TR-MRA following an intravenous bolus injection of gadolinium chelate. Recanalisation was diagnosed when any portion of the aneurysmal sac was enhanced in the arterial phase. Results On TR-MRA, two lesions were diagnosed as recanalised. They were confirmed by transcatheter arteriography and re-treated by embolotherapy. For the remaining 19 lesions, there were no findings of recanalisation on TR-MRA. Conclusions TR-MRA appears to be a feasible method for follow-up examination of VAAs treated by embolotherapy. keywords:
time-resolved MRA, embolization, aneurysm |