For evaluation of numerous diseases, computed tomography has become one of the most crucial modality in diagnostic imaging. Cone-beam CT (CBCT) scanners are compact, low cost, and low radiation dose system, which are specifically dedicated to imaging of maxillofacial region. It is the most significant technological advancement that has created a revolution in field of dentistry, facilitating the transition of dental diagnosis from 2-dimensional to 3-dimensional images. Advantages of CBCT are rapid scan time, limitation of the X-radiation to the area of interest, reduced patient radiation dose, and image accuracy. Multiple detector computed tomography (MDCT) scanning is a rapid and painless diagnostic procedure that combines the use of computers and X-ray equipment to produce images of inside of the body. Advantages of MDCT are shorter scan duration, improved contrast-enhanced scans, and longer scan ranges CTA. In this chapter, multiple choice questions are provided along with their answers.