title: Triaxial coil embolization using Guglielmi detachable coils with the voltage-dependent coil-detaching technique.
abstract: BACKGROUND
  A triple co-axial (triaxial) system, consisting of a 1.9-Fr non-tapered microcatheter with one marker, a 2.7-Fr microcatheter, and a 4-Fr catheter, has been recently developed, and can be used in coil embolizations using 0.010-inch Guglielmi detachable coils (GDCs) with a voltage-dependent coil-detaching technique.
  
  
  OBJECTIVE
  To describe this new technique and evaluate its technical feasibility and clinical efficacy.
  
  
  METHODS
  Twenty patients underwent this procedure. Diseases were gastrointestinal bleeding in five patients, traumatic bleeding in three patients, and other diseases in 12 patients. The technical success rate, clinical success rate, and complications of this procedure were evaluated. Technical success was defined as the successful delivery and detachment of a GDC, and clinical success was defined as the immediate postembolic complete cessation of blood flow confirmed by digital subtraction angiography.
  
  
  RESULTS
  A total of 140 GDCs were used and 20 arteries were embolized. The technical success rate was 94% (131/140) and clinical success rate was 95% (19/20). No major complications were reported.
  
  
  CONCLUSIONS
  The triaxial system in coil embolization using a GDC by monitoring the voltage for coil-detaching appeared to be safe and effective.
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan mshimohira@gmail.com.
authors.forename: Masashi
authors.initials: M
authors.lastname: Shimohira
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Hashizume
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Kengo
authors.initials: K
authors.lastname: Ohta
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Kazushi
authors.initials: K
authors.lastname: Suzuki
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Kurosaka
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Muto
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Yuta
authors.initials: Y
authors.lastname: Shibamoto
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002406:Catheterization, Peripheral / Q000295:instrumentation*; D020878:Device Removal / Q000295:instrumentation* / Q000379:methods; D004574:Electromagnetic Fields; D004621:Embolization, Therapeutic / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008904:Miniaturization; D058729:Peripheral Arterial Disease / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000628:therapy*; D011859:Radiography; D016896:Treatment Outcome; D062666:Vascular Access Devices
keywords: Triple co-axial; coil; embolization