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Original research
Initial experience using the Penumbra coil 400: comparison of aneurysm packing, cost effectiveness, and coil efficiency
  1. James Milburn1,
  2. Ankit Limba Pansara2,
  3. Gabriel Vidal3,
  4. Raisa Coral Martinez3
  1. 1Department of Radiology, Ochsner Medical System, New Orleans, Louisiana, USA
  2. 2Department of Radiology, Ochsner Clinic Foundation, New Orleans, Louisiana, USA
  3. 3Department of Neurology, Ochsner Clinic Foundation, New Orleans, Louisiana, USA
  1. Correspondence to Dr J Milburn, Department of Radiology, Ochsner Medical System, 1514 Jefferson Highway, New Orleans, LA 70121, USA; jmilburn{at}


Background/objective This was a retrospective single operator experience of aneurysm coiling at the Ochsner Clinic, comparing the Penumbra coil 400 with the other most commonly used coil types, Orbit and Galaxy.

Methods 40 aneurysms treated exclusively with Orbit or Galaxy coils and 18 aneurysms treated only with Penumbra coils from 2010 to February 2012 were compared. Measurements included packing density, number of coils per unit aneurysm volume, and total coil length per unit aneurysm volume.

Results Mean packing density of 33.7% using Penumbra coils was significantly greater than 24.4% for Orbit/Galaxy coils. The number of coils per aneurysm volume of 0.026 coils/mm3 for the Penumbra coil was significantly lower than 0.114 coils/mm3 for the Orbit/Galaxy coils. Aneurysm occlusion rates were similar in both groups.

Conclusions Compared with the Orbit/Galaxy coils, our analysis suggests that the Penumbra coil is more efficient and cost effective in the treatment of intracranial aneurysms.

  • Aneurysm
  • Angiography
  • Brain
  • Coil
  • Subarachnoid

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