@inproceedings{7e22e09d287649acb88f075591251192,
title = "Cone-beam CT with a noncircular (sine-on-sphere) orbit: Imaging performance of a clinical system for image-guided interventions",
abstract = "To compare the image quality characteristics of a cone-beam CT (CBCT) imaging system with noncircular scan protocols (Sine-on-Sphere) to a conventional circular orbit. A phantom was used to assess image uniformity, image noise, and noise-power spectrum (NPS) for a biplane C-arm (Icono; Siemens Healthineers) that could perform CBCT with either a circular or non-circular orbit (Sine-on-Sphere, {"}SineSpin{"}). The non-circular orbit used a sinusoidal motion with an amplitude of ±10° during the orbit. Uniformity and quantum noise were similar for the circular and non-circular orbits. A slight increase in cupping artifact for the noncircular orbit was observed and attributed to slightly increased path lengths (increased scatter-to-primary ratio) for oblique rays through the cylindrical phantom. The NPS clearly depicted closing of the {"}null cone{"}about the fz spatial frequency axis owing to improved sampling with the non-circular orbit. A non-circular orbit for CBCT resulted in improved sampling with similar noise magnitude and uniformity compared to a circular orbit.",
keywords = "cone-beam CT, image-guided surgery, imaging performance, noncircular orbit, source-detector trajectory",
author = "Jones, {A. Kyle} and Moiz Ahmad and Raza, {Shaan M.} and Chen, {Stephen R.} and Siewerdsen, {Jeffrey H.}",
note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Medical Imaging 2023: Physics of Medical Imaging ; Conference date: 19-02-2023 Through 23-02-2023",
year = "2023",
doi = "10.1117/12.2654347",
language = "English (US)",
series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",
publisher = "SPIE",
editor = "Lifeng Yu and Rebecca Fahrig and Sabol, {John M.}",
booktitle = "Medical Imaging 2023",
}