Change your Angle of View Sinusoidal C-Arm Movement in Cranial Flat-panel CT to Improve Image Quality

Lücking H, Hölter P, Lang S, Schmidt M, Eisenhut F, Dörfler A (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Clinical Neuroradiology Springer Verlag (Germany)

Abstract

Background Artifacts from surrounding bony structures, especially from the petrous bones, regularly impair soft tissue computed tomography (CT) imaging of the middle and posterior fossa. This affects flat-panel CT in particular. Sinusoidal movement of the C-arm during acquisition (i.e. craniocaudal tilting along with semicircular rotation) is supposed to reduce artifacts, thus enhancing soft tissue imaging quality. Methods In the work-up of ischemic stroke or subarachnoid hemorrhage 40 patients underwent multi-slice CT (MS-CT) and either plain circular (cFP-CT; n = 20) or sinusoidal (sFP-CT; n = 20) flat-panel CT within a short interval. Two independent readers analyzed MS-CT and FP-CT datasets for recognizability of eight different brain structures and three typical types of artifacts according to a predetermined score. Results Interrater reliability was moderate for cFP-CT (kappa = 0.575) and good to very good for ratings of MS-CT and sFP-CT (kappa = 0.651 to kappa = 1). MS-CT was rated to be significantly better than cFP-CT and sFP-CT (p < 0.0001) in the overall score. Yet, sFP-CT was rated to be significantly superior to cFP-CT (overall p < 0.0001) regarding most anatomical regions and petrous bone artifacts. Conclusion Compared to a standard circular protocol, sinusoidal C-arm movement in cranial FP-CT can significantly reduce artifacts in the posterior fossa and, moreover, can improve visualization of most supratentorial and infratentorial anatomical structures.

Authors with CRIS profile

Hannes Lücking Department of Neuroradiology Philip Hölter Department of Neuroradiology Stefan Lang Department of Neuroradiology Manuel Schmidt Department of Neuroradiology Felix Eisenhut Department of Neuroradiology Arnd Dörfler Department of Neuroradiology

How to cite

APA:

Lücking, H., Hölter, P., Lang, S., Schmidt, M., Eisenhut, F., & Dörfler, A. (2022). Change your Angle of View Sinusoidal C-Arm Movement in Cranial Flat-panel CT to Improve Image Quality. Clinical Neuroradiology. https://dx.doi.org/10.1007/s00062-022-01172-z

MLA:

Lücking, Hannes, et al. "Change your Angle of View Sinusoidal C-Arm Movement in Cranial Flat-panel CT to Improve Image Quality." Clinical Neuroradiology (2022).

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