10-16 June 2018
Dalhousie University
America/Halifax timezone
Welcome to the 2018 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2018!

The past, present and future of X-ray Computed Tomography (I)

11 Jun 2018, 13:30
SUB 224 (cap.50) (Dalhousie University)

SUB 224 (cap.50)

Dalhousie University

Invited Speaker / Conférencier(ère) invité(e) Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB) M2-4 DPMB 101 (DPMB) | (DPMB)


Philippe Després (Université Laval)


Computed Tomography (CT) is considered a mature technology as it did not change significantly since the advent of multislice devices (2000s) and helical acquisitions (1990s). However, innovations in CT are still happening. After a brief history of CT, the evolution of this imaging modality during the last few years will be reviewed from technological, social and medical perspectives. On the technological front, CT can nowadays rely on unprecedented computing power, allowing the execution of advanced reconstruction algorithms in a reasonable time. Massively parallel Graphics Processing Units (GPUs), for instance, allow the used of complex physical models in iterative reconstruction schemes. These approaches can yield better images acquired at lower patient doses. From a health physics perspective, the steadily increasing number of CT studies performed each year has drawn the attention of the media and radiation safety authorities. CT manufacturers, well aware of this situation, nowadays propose technologies aiming at reducing the radiation dose to the patient. These technologies will be reviewed and discussed. From a medical perspective, CT nowadays allow new applications thanks to technological developments. The case of dual-energy imaging will be reviewed and discussed. Finally, current research avenues in CT will be reviewed, from technological and medical perspectives.

Primary author

Philippe Després (Université Laval)

Presentation Materials