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With the development of advanced plastic surgery techniques and increasing interest in facial attractiveness in modern society, the number of facial plastic surgeries has dramatically increased over the past decade. Approximately 5000 cosmetic bimaxillary surgeries are reportedly performed annually in Korea (1). Bimaxillary surgery or orthognathic surgery is a unique category of surgery that improves both the patient’s appearance and dental occlusal function by correcting maxillo-facial deformity. Accordingly, bimaxillary surgery has a tremendous effect on patient self-esteem and well-being (2). At present, the surgical outcome of bimaxillary procedures is only assessed via subjective patient responses to a questionnaire (3). Thus, there is a need for a more objective tool for measuring surgical outcomes and patient satisfaction in the field of orthognathic surgery. With the advent of functional magnetic resonance imaging (fMRI), blood-oxygen level-dependent activity can be measured in vivo as a surrogate for brain activation during task performance. Previous fMRI studies have revealed that the orbitofrontal cortex (OFC) is prominently activated in response to attractive faces compared to unattractive faces (4, 5). The OFC is an important brain area involved in reward, and it functions together with the ventral striatum and ventral tegmental areas in the brain reward system (4). In the present study, we assessed neural activity using fMRI during the evaluation of self-face imFunctional Magnetic Resonance Imaging to Evaluate Patient Satisfaction Following Bimaxillary Surgery: A Preliminary Study       :