Dekonvolusi Citra Hasil Pemindaian CT Simulator Berbasis Analisis Fungsi Respon Dua Dimensi (2D)

Abstract

− Every health technology is the responsibility for health care institutions. To guarantee the quality of images or images produced from CT Simulator, health services institutions that run equipment supporting insurance programs must carry out Quality Control (QC). In this study using a 16 slides CT Simulator and 5 test phantom samples with payment of 4 comparable phantoms and 1 test phantom. Scanning using the CT Simulator plane is carried out at the time of phantom with slices of 5 mm and 10 mm thickness variations. Determination of two-dimensional (2D) response function values is carried out using convolution techniques. Deconvolution technique is used to reverse the convolution effect. The results showed that using the convolution and deconvolution techniques produced the same 2D graph function. With the deconvolution technique, the comparative phantom image looks clearer than the test phantom, while the test phantom has some noise in the graph. The value of the 2D response function of the comparable phantom for slice thicknesses of 5 mm and 10 mm is 0.5xx and 0.7xx-0.8xx. In addition, graphs of 2D response functions are obtained using deconvolution techniques for comparative phantom and phantom test. The simulation image shows a good image of sigma 0.5 and 2. From the comparison of scan image data and simulation image results produce a good image calculating the scan response value is still in the sigma () 0.5 and 2, CT Simulator simulation aircraft are still feasible used.