In this paper a realization of a narrow beamwidth scanning approach of a semi-human sized biological target has been done. This approach will be very much helpful for different scanning and image reconstruction techniques used in Microwave Tomography Technique (MTT). Sometimes the difficulty in scanning arises due to the presence of cancerous tumors or affected cells inside the inner regions of human body organ. Identification of the actual region becomes tough using ray analysis techniques. Wide beamwidth scanning makes things more complex. Hence, selection of diagnosis techniques and medicines become difficult. Here, a narrow beamwidth scanning approach has been implemented using a simulation model that can provide a solution to the wide beamwidth scanning problems. A suitable biological human body model has been considered and placed inside a nearfield position in between the transmitter and the receiver. Based on the scanning orientations the data are collected at the receiver end and analyzed to identify the actual positions of the affected cells inside the model. The output generates satisfactory and accurate results. So, based on this analysis this can be claimed that using the proposed technique in MTT, more accurate diseased cell identification can be done.