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For biomedical applications, tomographic imaging of objects in rapid motion requires high speed and high temporal resolution. It has been found that a multipixel carbon nanotube (CNT) based field emission X-ray source can produce spatially and temporally modulated radiations. When a multi-pixel configuration is used, crosstalk (leaking of current from one pixel to the neighboring pixel) comes into picture. In order to achieve good image quality, the crosstalk should be negligible. We report a study on the crosstalk phenomenon in a multi-pixel CNT array. The study will help in improving the imaging capability of computed tomography (CT) scanner.