• Renato Barradas Rodrigues, Victor Lima Araujo, Pamella Yoko Omori, Nicolle Dos Santos Moraes Nunes, Marco Antônio Orsini Neves, Renata Rodrigues Teixeira Castro, and Bruno Lima Pessoa.
• Universidade Federal Fluminense, Department of General and Specialized Surgery - Niterói (RJ), Brazil.
• Rev Assoc Med Bras (1992). 2021 Jun 1; 67 (6): 816-821.

ObjectiveUse Lead-DBS software to analyze stereotactical surgical outcome of an operated population and demonstrate that small target deviations do not compromise the stimulation of desired structures, even with small amperages.MethodsImage exams of patients submitted to deep brain stimulation for movement disorders treatment were processed in Lead-DBS software. Electrode stereotactic coordinates were subtracted from the planned target and those deviations, compared among different anatomical targets and sides operated firstly and secondly. We also quantified the frequency of relation between the activated tissue volume and the planned target through computer simulations.ResultsNone of the 16 electrodes were exactly implanted at the planned coordinates. A stimulation of 3 mA reached 62.5% of the times the planned coordinates, rising to 68.75% with a 3,5 mA. No statistical significance was demonstrated in any comparison of laterality and anatomical sites.ConclusionsThe simulation of small amperage fields could reach the intended target even when electrode placement is suboptimal. Furthermore, such a goal can be achieved without overlapping the volume of activated tissue with undesired structures. Software Lead-DBS proved to be a valuable complementary asset for surgical stereotactical result assessment.

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