@article {1176, title = {M{\H u}t{\'e}tek tervez{\'e}se sz{\'a}m{\'\i}t{\'o}g{\'e}ppel}, journal = {OTKA MAGAZIN}, year = {2010}, month = {2010}, pages = {38 - 40}, author = {Endre Varga and Bal{\'a}zs Erd{\H o}helyi} } @conference {1844, title = {Semi-automatic bone fracture reduction in surgical planning}, booktitle = {International Conference on Computer Assisted Radiology and Surgery (CARS)}, volume = {4}, year = {2009}, pages = {S98-S99}, publisher = {Springer Verlag}, organization = {Springer Verlag}, type = {Conference Paper}, address = {Berlin, Germany}, abstract = {

The surgical intervention of complex bone fractures has to be planned very carefully, especially for such a complex region as the pelvic ring. The computer aided surgical planning is done before the actual surgery takes place and its main purpose is to gather more information about the dislocation of the bone fragments and to arrange the surgical implants to be inserted. With the help of finite element analysis even the biomechanical stability of the whole plan can be predicted. To create such a plan the following steps are performed. First, the CT dataset of the patient is segmented [1], which enables us to treat the different bones and broken fragments separately. Next the surface of this volumetric dataset is determined [2] and presented in a 3D environment. Since the fragments may have moved during the fracture, it is essential to move and rotate them back to their original anatomic position. Without this reduction, no implants can be inserted, since the final locations of the fragments are unknown. Previous solutions to the fracture reduction problem included moving the fragments with the mouse, or a special 3D haptic device. The former is not intuitive to use since the mouse is only 2D, and the later is expensive and still requires learning.

}, doi = {10.1007/s11548-009-0314-1}, author = {Bal{\'a}zs Erd{\H o}helyi and Endre Varga} } @conference {1842, title = {Surgical Planning Tool with Biomechanical Simulation}, booktitle = {International Conference on Computer Assisted Radiology and Surgery (CARS)}, volume = {2}, year = {2007}, pages = {S262-S263}, publisher = {Springer}, organization = {Springer}, type = {Conference Paper}, address = {Berlin, Germany}, abstract = {

The fixation of fractured bones often needs a very careful decision making. The operation has to be designed very carefully. A computer assisted system can help the surgeon in the planning phase to increase surgical accuracy. This paper introduces a software tool to plan a surgical intervention and to calculate the biomechanical stability of the plan. The proposed system provides 3D movement and rotation of the bone fragments and the insertion of fixation screws and plates. Finite element analysis is used to calculate mechanical stability of the surgical plan. Using these results the surgeon is able to see the week points of the fixation before the surgery. He can even try several surgical plans to pick the most promising one.

}, doi = {10.1007/s11548-007-0098-0}, author = {Bal{\'a}zs Erd{\H o}helyi and Endre Varga and Attila Kuba} } @article {1174, title = {MedEdit: A Computer Assisted Image Processing and Navigation System for Orthopedic Trauma Surgery}, journal = {ACTA CYBERNETICA-SZEGED}, volume = {17}, year = {2006}, month = {2006///}, pages = {589 - 603}, isbn = {0324-721X}, author = {Endre Varga and Kriszti{\'a}n Oll{\'e} and Bal{\'a}zs Erd{\H o}helyi and Attila Kuba} } @booklet {1181, title = {Comparision of Pennig Ex.Fix. and palmar plating with FEA, in radius (A3) fractures}, year = {2004}, note = {[El{\H o}ad{\'a}s] [El{\H o}ad{\'a}s] }, month = {2004///}, author = {Endre Varga and Bal{\'a}zs Erd{\H o}helyi and Kriszti{\'a}n Oll{\'e} and Attila Kuba and J A Simonka} } @article {1177, title = {Comparision of Pennig Ex.Fix. and palmar plating with FEA, in radius (A3) fractures}, journal = {MAGYAR TRAUMATOL{\'O}GIA ORTOP{\'E}DIA K{\'E}ZSEB{\'E}SZET PLASZTIKAI SEB{\'E}SZET}, volume = {4}, year = {2004}, month = {2004///}, pages = {224}, isbn = {1217-3231}, author = {Endre Varga and Bal{\'a}zs Erd{\H o}helyi and Kriszti{\'a}n Oll{\'e} and Attila Kuba and J A Simonka} } @booklet {1180, title = {Comparision of Synthes Hybrid Ex.Fix. and double plating in tibial fractures}, year = {2004}, note = {[El{\H o}ad{\'a}s] [El{\H o}ad{\'a}s] }, month = {2004///}, author = {Endre Varga and Bal{\'a}zs Erd{\H o}helyi and Kriszti{\'a}n Oll{\'e} and Zs Balogh and Attila Kuba and J A Simonka} } @booklet {1185, title = {Computer Assisted Image Processing and Navigation System for Orthopedic-Trauma Surgery}, year = {2004}, note = {[El{\H o}ad{\'a}s] [El{\H o}ad{\'a}s] }, month = {2004///}, author = {Endre Varga and Kriszti{\'a}n Oll{\'e} and Bal{\'a}zs Erd{\H o}helyi and Gy{\"o}rgy Bekes and Krisztina Mar{\'o}ti and Attila Kuba} } @booklet {1182, title = {MedEdit: A Computer Assisted Planning and Simulation System for Orthopedic-Trauma Surgery}, year = {2004}, note = {[El{\H o}ad{\'a}s] [El{\H o}ad{\'a}s] }, month = {2004///}, author = {Endre Varga and Kriszti{\'a}n Oll{\'e} and Bal{\'a}zs Erd{\H o}helyi and Csongor Halmai and Attila Kuba} } @booklet {1179, title = {MedEdit: A Computer Assisted Planning system for Orthopedic-Trauma Surgery}, year = {2004}, note = {[El{\H o}ad{\'a}s] [El{\H o}ad{\'a}s] }, month = {2004///}, author = {Endre Varga and Bal{\'a}zs Erd{\H o}helyi and Kriszti{\'a}n Oll{\'e} and Zs Balogh and Attila Kuba and J A Simonka} } @booklet {1186, title = {Preparing Surgical Operation Plans for Finite Element Analysis Using the MedEdit System}, year = {2004}, note = {[El{\H o}ad{\'a}s] [El{\H o}ad{\'a}s] }, month = {2004///}, author = {Endre Varga and Bal{\'a}zs Erd{\H o}helyi and Kriszti{\'a}n Oll{\'e} and Attila Kuba} }