The dimensions of the human body vary by age, sex, and race. The internal structure and outer dimensions of a body exposed to an electromagnetic field is important for accurate dosimetry. The average physical size of Korean adult males between the ages 18 to 24 was investigated, and a male volunteer was selected whose physical condition is within the physical standards, ± 5%. Magnetic resonance images and partially computerized tomography images of the volunteer were acquired. The intervals between the transverse images were 1 mm for the head and 3 mm for the rest of the body. About 30 different tissues were manually classified by an anatomist on the raw images, and the segmented images were implemented in the form of a text file appropriate for numerical formulation. model is needed to consider accurate dosimetry in a Korean human body for electromagnetic field exposures. In this letter, the development process of a voxel-based human body model and its results are described. A volunteer was selected based on the average physique of Korean males, and his body was imaged from the crown of the head to the tip of his toes using magnetic resonance (MR) imaging and computerized tomography (CT) scans. For these two types of images, an MR machine (GE Signa Horizon 1.5 Tesla MRI System) and CT machine (GE High Speed Advantage) were used. The CT scans were performed only in a partial head region for better identification of bone, fibrous tissue, and interior air. Based on these images, a three-dimensional anatomical data set suitable for numerical analysis in a rectangular grid, such as the FDTD technique, was implemented.