Abstract: A surgical drape includes an impervious section having absorbing properties, an incision section including an incise foil, and a transparent section that is sized such that it allows a user to visually observe, through the surgical drape for registration purposes, a substantial part of a patient that is covered by the surgical drape. A method of registering a patient's body part with a pre-acquired image dataset of the body part is provided including providing a surgical drape including the impervious, the incision, and the transparent sections, covering the patient's body part with the surgical drape so as to provide a sterile workplace separated from an unsterile area by the surgical drape, using the transparent section of the surgical drape to visually identify the patient's body part covered by the surgical drape, and approaching and registering the patient's body part with a registration instrument such as for example a pointer instrument.