Mental Model


  • B. M. Hemminger, P. L. Molina, T. M. Egan, F. C. Detterbeck, K. E. Muller, C. S. Coffey, and J. K. T. Lee, “Assessment of real-time 3D visualization for cardiothoracic diagnostic evaluation and surgery planning.,” Journal of digital imaging : the official journal of the Society for Computer Applications in Radiology, vol. 18, iss. 2, pp. 145-53, 2005.
      author = {Hemminger, Bradley M and Molina, Paul L and Egan, Thomas M and Detterbeck,
      Frank C and Muller, Keith E and Coffey, Christopher S and Lee, Joseph
      K T},
      title = {Assessment of real-time 3D visualization for cardiothoracic diagnostic
      evaluation and surgery planning.},
      journal = {Journal of digital imaging : the official journal of the Society
      for Computer Applications in Radiology},
      year = {2005},
      volume = {18},
      pages = {145-53},
      number = {2},
      month = {June},
      abstract = {RATIONALE AND OBJECTIVES: Three-dimensional (3D) real-time volume
      rendering has demonstrated improvements in clinical care for several
      areas of radiological imaging. We test whether advanced real-time
      rendering techniques combined with an effective user interface will
      allow radiologists and surgeons to improve their performance for
      cardiothoracic surgery planning and diagnostic evaluation. MATERIAL
      AND METHODS: An interactive combination 3D and 2D visualization system
      developed at the University of North Carolina at Chapel Hill was
      compared against standard tiled 2D slice presentation on a viewbox.
      The system was evaluated for 23 complex cardiothoracic computed tomographic
      (CT) cases including heart-lung and lung transplantation, tumor resection,
      airway stent placement, repair of congenital heart defects, aortic
      aneurysm repair, and resection of pulmonary arteriovenous malformation.
      Radiologists and surgeons recorded their impressions with and without
      the use of the interactive visualization system. RESULTS: The cardiothoracic
      surgeons reported positive benefits to using the 3D visualizations.
      The addition of the 3D visualization changed the surgical plan (65\%
      of cases), increased the surgeon's confidence (on average 40\% per
      case), and correlated well with the anatomy found at surgery (95\%
      of cases). The radiologists reported fewer and less major changes
      than the surgeons in their understanding of the case due to the 3D
      visualization. They found new findings or additional information
      about existing findings in 66\% of the cases; however, they changed
      their radiology report in only 14\% of the cases. CONCLUSION: With
      the appropriate choice of 3D real-time volume rendering and a well-designed
      user interface, both surgeons and radiologists benefit from viewing
      an interactive 3D visualization in addition to 2D images for surgery
      planning and diagnostic evaluation of complex cardiothoracic cases.
      This study finds that 3D visualization is especially helpful to the
      surgeon in understanding the case, and in communicating and planning
      the surgery. These results suggest that including real-time 3D visualization
      would be of clinical benefit for complex cardiothoracic CT cases.},
      file = {Hemminger2005.pdf:Hemminger2005.pdf:PDF},
      issn = {0897-1889},
      keywords = {Confidence Intervals,Humans,Imaging, Three-Dimensional,Patient Care
      Planning,Radiography, Thoracic,Radiology Information Systems,Retrospective
      Studies,Thoracic Diseases,Thoracic Diseases: radiography,Thoracic
      Diseases: surgery,Tomography, X-Ray Computed,User-Computer Interface,
      owner = {thomaskroes},
      pmid = {15827827},
      timestamp = {2010.10.22}
  • W. Lamade, G. Glombitza, L. Fischer, P. Chiu, C. E. C├írdenas, M. Thorn, H. P. Meinzer, L. Grenacher, H. Bauer, T. Lehnert, and C. Herfarth, “The impact of 3-dimensional reconstructions on operation planning in liver surgery.,” Archives of surgery (Chicago, Ill. : 1960), vol. 135, iss. 11, pp. 1256-61, 2000.
      author = {Lamade, W and Glombitza, G and Fischer, L and Chiu, P and C\'{a}rdenas,
      C E and Thorn, M and Meinzer, H P and Grenacher, L and Bauer, H and
      Lehnert, T and Herfarth, C},
      title = {The impact of 3-dimensional reconstructions on operation planning
      in liver surgery.},
      journal = {Archives of surgery (Chicago, Ill. : 1960)},
      year = {2000},
      volume = {135},
      pages = {1256 - 61},
      number = {11},
      month = {November},
      abstract = {BACKGROUND: Operation planning in liver surgery depends on the precise
      understanding of the 3-dimensional (D) relation of the tumor to the
      intrahepatic vascular trees. To our knowledge, the impact of anatomical
      3-D reconstructions on precision in operation planning has not yet
      been studied. HYPOTHESIS: Three-dimensional reconstruction leads
      to an improvement of the ability to localize the tumor and an increased
      precision in operation planning in liver surgery. DESIGN: We developed
      a new interactive computer-based quantitative 3-D operation planning
      system for liver surgery, which is being introduced to the clinical
      routine. To evaluate whether 3-D reconstruction leads to improved
      operation planning, we conducted a clinical trial. The data sets
      of 7 virtual patients were presented to a total of 81 surgeons in
      different levels of training. The tumors had to be assigned to a
      liver segment and subsequently drawn together with the operation
      proposal into a given liver model. The precision of the assignment
      to a liver segment according to Couinaud classification and the operation
      proposal were measured quantitatively for each surgeon and stratified
      concerning 2-D and different types of 3-D presentations. RESULTS:
      The ability of correct tumor assignment to a liver segment was significantly
      correlated to the level of training (P<.05). Compared with 2-D computed
      tomography scans, 3-D reconstruction leads to a significant increase
      of precision in tumor localization by 37\%. The target area of the
      resection proposal was improved by up to 31\%. CONCLUSION: Three-dimensional
      reconstruction leads to a significant improvement of tumor localization
      ability and to an increased precision of operation planning in liver
      issn = {0004-0010},
      keywords = {Computer Simulation,General Surgery,General Surgery: education,Hepatectomy,Hepatectomy:
      methods,Humans,Image Processing, Computer-Assisted,Liver,Liver Neoplasms,Liver
      Neoplasms: surgery,Liver: blood supply,Liver: pathology,Therapy,
      Computer-Assisted,Tomography, X-Ray Computed,User-Computer Interface},
      owner = {thomaskroes},
      pmid = {11074877},
      timestamp = {2010.10.22}


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