Thx! Greetings.

I am exploring your site, because i have a wealth of experience in 3D surface and volumetric reconstruction. @ this point in time. 19 years( 2005 start) , approximately 30,000 case reconstructions from CT’s by myself. Many interesting explorations!

I also have a wealth of experience in 3D reconstruction in the clinical Neuroangiography Angio suite.

History: I conceived, and executed the first manual Rotational angiogram in a clinical Angiography suite, on Jan25/1992. The subsequent review of 200 cases in 1994, and paper can be found on pub-med, Rotational Angiography, By Dr. David Hoff(fellow @ that time) Under the umbrella of the Neuroradiology and Neurosurgery group @ Toronto Western Hospital. (sadly, Technologists always seem to be under the Radar, so i am not mentioned, neither is the technique described, just the results!)

General Electric then proceeded to reverse engineer a Motorized rotational C-Arm, coned beam acquisition, with output to a Linux driven workstation, with 3D software, which arrived in my institution in 1999(7 years later). I was the first to use this software.

I pioneered intercranial CTA 3D surface reconstruction for Neurosurgery/Neuroradiology in 2006, which by then was my regular work assignment( Technologist driven 3D reconstruction, exclusively CT scans, commencing July 2005, by myself).

I am today, the go-to Technical expert when Neurosurgery or Neuroradiology wants a diagnostic surface reconstruction of an intercranial CTA to better understand a positive finding of intercranial aneurysms… Expert user. This is an area of intense segmentation, to obtain clear arterial visualization of the pathology. Helps because i also know what i am looking at.
Today, i am perfecting rendering of our 4DCTA/CTV’s, primarily for venous disease, as the quality is much better than the raw output from the CT scanner.

Fast forward : Today, 3D reconstruction in my area is primarily for pre-operative assessment by surgeons. I make the files, to show the anatomy to it’s best display. Again, it helps that my clinical exposure is so extensive.

Currently, i am starting a new model for our 3D Lab, the evolution continues. We have 2 older workstations( one equipped with a Wacom Tablet, which i absolutely love!), and thin slice is arriving with three workstations. I will train the new team. I will be learning too…so why i am on your site.

Sorry for the length, but greetings is in order. I use the software package from Vital Images (Vitrea).

Too many other things, a long list.(32 years making 3D reconstructions)

cheers
John Roeger
3D Technical Specialist, University Health Network, Toronto Western Hospital
Medical Radiation Technologist, Interventional Neuroradiology/ Vascular Interventional Radiology .