Radiation dose and image quality comparison during spine surgery with two different, intraoperative 3D imaging navigation systems.

Radiation dose and image quality comparison during spine surgery with two different, intraoperative 3D imaging navigation systems.
J Appl Clin Med Phys. 2019 Jan 24;:
Authors: Nachabe R, Strauss K, Schueler B, Bydon M
Abstract
Careful protocol selection is required during intraoperative three-dimensional (3D) imaging for spine surgery to manage patient radiation dose and achieve clinical image quality. Radiation dose and image quality of a Medtronic O-arm commonly used during spine surgery, and a Philips hybrid operating room equipped with XperCT C-arm 3D cone-beam CT (hCBCT) are compared. The mobile O-arm (mCBCT) offers three different radiation dose settings (low, standard, and high), for four different patient sizes (small, medium, large, and extra large). The patient's radiation dose rate is constant during the entire 3D scan. In contrast, C-CBCT spine imaging uses three different field of views (27, 37, and 48 cm) using automatic exposure control (AEC) that modulates the patient's radiation dose rate during the 3D scan based on changing patient thickness. hCBCT uses additional x-ray beam filtration. Small, medium, and large trunk phantoms designed to mimic spine and soft tissue were imaged to assess radiation dose and image quality of the two systems. The estimated measured "patient" dose for the small, medium, and large phantoms imaged by the mCBCT considering all the dose settings ranged from 9.4-27.6 mGy, 8.9-33.3 mGy, and...

Source: Journal of Applied Clinical Medical Physics - January 24, 2019 Category: Physics Authors: Nachabe R, Strauss K, Schueler B, Bydon M Tags: J Appl Clin Med Phys Source Type: research