Neuroradiology Applications of Dual and Multi-energy Computed Tomography

Natthawut Jarunnarumol; Shahmir Kamalian; Michael H Lev; Rajiv Gupta

doi:10.1016/j.rcl.2023.05.009

Neuroradiology Applications of Dual and Multi-energy Computed Tomography

Radiol Clin North Am. 2023 Nov;61(6):973-985. doi: 10.1016/j.rcl.2023.05.009. Epub 2023 Jun 29.

Authors

Natthawut Jarunnarumol¹, Shahmir Kamalian², Michael H Lev², Rajiv Gupta²

Affiliations

¹ Department of Diagnostic and Therapeutic Radiology, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand; Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. Electronic address: natthawut.jar@mahidol.edu.
² Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.

PMID: 37758364
DOI: 10.1016/j.rcl.2023.05.009

Abstract

Computed tomography (CT) imaging has become an essential diagnostic tool for most emergent clinical conditions, owing to its speed, accuracy, cost, and few contraindications, compared with MR imaging cross-sectional imaging. Spectral CT, which includes dual, multienergy, and photon-counting CT, is superior to conventional single-energy CT (SECT) in many respects. Spectral information enables differentiation between materials with similar Hounsfield Unit attenuations on SECT; examples include but are not limited to "virtual noncontrast," "virtual noncalcium," and most notably for neuro applications, "hemorrhage versus iodine." This article expands on the many possible benefits of spectral CT in neuroimaging.

Keywords: Dual-energy CT; Head and neck imaging; Material decomposition; Multispectral CT; Neuroimaging; Spectral imaging; Stroke; Virtual monochromatic.

Publication types

Review