title: Clinical and multidetector CT follow-up results of renal artery aneurysms treated by detachable coil embolization using 3D rotational angiography.
abstract: BACKGROUND
  There are very few reports regarding the use of 3D rotational angiography (3D RA) in embolization of renal artery aneurysms (RAAs). No valuable data have been reported on the follow-up result of coil embolization for RAAs on computed tomography (CT). Purpose To evaluate the clinical and multidetector computed tomography (MDCT) follow-up results of renal artery aneurysms treated by detachable coil embolization using 3D RA.
  
  
  METHODS
  Six patients diagnosed with RAAs were included. Five patients underwent detachable coil embolization. Five patients underwent 3D RA and the parameters used for planning endovascular treatment obtained by 2D CT, reformatted 3D CT angiography (3D CTA), 2D digital subtraction angiography (2D DSA) and 3D RA were compared. The postembolization MDCT follow-up findings were analyzed retrospectively.
  
  
  RESULTS
  The technical success rate for detachable coil embolization was 40%. The 3D CTA showed the dome-to-neck ratio (DNR) and tangential view of the renal artery aneurysm in five patients (83.3%) and the 2D CT showed it in four (66.7%). An optimal working angle assessment could not be obtained on the 2D CT and 3D CTA. The 3D RA showed the DNR, tangential view, and optimal working angle in all patients. Renal infarction occurred in three patients and postprocedural hypertension developed in two patients during the follow-up period.
  
  
  CONCLUSIONS
  The 3D RA was useful in preoperative determination of adequate working angle for detachable coil embolization of RAAs. Late complications of detachable coil embolization for RAAs were renal infarction and hypertension.
authors.affiliation: Department of Radiology, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Jung Min
authors.initials: JM
authors.lastname: Seo
authors.forename: Kwang Bo
authors.initials: KB
authors.lastname: Park
authors.forename: Keon Ha
authors.initials: KH
authors.lastname: Kim
authors.forename: Pyoung
authors.initials: P
authors.lastname: Jeon
authors.forename: Sung Wook
authors.initials: SW
authors.lastname: Shin
authors.forename: Hong Suk
authors.initials: HS
authors.lastname: Park
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Do
authors.forename: Dong-Ik
authors.initials: DI
authors.lastname: Kim
authors.forename: Young-Wook
authors.initials: YW
authors.lastname: Kim
mesh_terms: D000783:Aneurysm / Q000000981:diagnostic imaging* / Q000628:therapy*; D000792:Angiography / Q000379:methods*; D015901:Angiography, Digital Subtraction; D004621:Embolization, Therapeutic / Q000295:instrumentation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D011857:Radiographic Image Interpretation, Computer-Assisted; D015641:Radiography, Interventional; D012077:Renal Artery / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*; D016896:Treatment Outcome