A method may include obtaining image data of a subject acquired by an imaging device. The method may also include determining one or more characteristics associated with a body part of the subject from the image data. The one or more characteristics of the body part of the subject may include at least one of position information of the body part in the subject, geometric morphology information of the body part, water content information, or fat content information. The method may also include determining, based on one or more characteristics associated with the body part, values of one or more individualized parameters corresponding to the subject. The method may further include causing the imaging device to perform an imaging scan on the subject according to the values of the one or more individualized parameters.