Introduction The possibility of applying a CT scan during the operation enables the surgeon to control the positioning of the implants. The postoperative control of the implants with the photon counting technology gives the opportunity for a very precise imaging. These two techniques deliver a quite different dose to the patient.

Aim of Study With this abstract, we would be able to see the relation between the doses of these two techniques in the same patient

Methods Comparing the dose reports of the same patient with these two different CTs, first in the Angio suite and the second as post-OP. Comparing the image quality of these methods.

Results The results of the imaging of neuro-endovascular implants are from both techniques reliable. The PCCT-angiography has a higher radiation dose but is also beneficial to monitor treatment success.

Conclusion The CT in the Angio suite gives an immediate and accurate first impression of the surgery, despite of the lower dose.

Disclosure of Interest no.