Dual-Energy Computed Tomography: Physical Principles, Approaches to Scanning, Usage, and Implementation: Part 2

Area of Science:

• Medical Imaging
• Radiology
• Computed Tomography

Background:

• Spectral computed tomography, also known as dual-energy computed tomography (DECT), is seeing wider adoption in clinical practice.
• DECT offers advanced imaging capabilities, particularly in neuroradiology and head and neck imaging.
• Part 1 of this review discussed the fundamental physics and scanning approaches of DECT.

Purpose of the Study:

• To provide practical guidance on the implementation and clinical use of DECT.
• To review image reconstruction techniques and their impact on DECT imaging.
• To address operational challenges associated with DECT scanning.

Main Methods:

• Review of DECT imaging principles and applications.
• Analysis of image reconstruction methods for DECT.
• Discussion of practical considerations including image quality, radiation dose, and workflow.

Main Results:

• DECT scanners produce various image types and reconstructions requiring careful selection.
• Image quality, radiation dose, and workflow efficiency are key factors in DECT operationalization.
• Understanding these practical aspects is crucial for successful DECT integration.

Conclusions:

• Successful clinical integration of DECT requires attention to image reconstruction, quality, dose, and workflow.
• This review provides essential insights for clinicians and departments operationalizing DECT.
• Optimizing DECT usage enhances its value in neuroradiology and head and neck imaging.