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[Multidetector computed tomography of the liver].
W Schima1, C Kulinna, A Ba-Ssalamah
1Klinische Abteilung für Angiographie und Interventionelle Radiologie, Universitätsklinik für Radiodiagnostik, Medizinische Universität, Wien, Osterreich. wolfgang.schima@meduniwien.ac.at
Der Radiologe
|December 21, 2004
Summary
Advanced multidetector-row CT (MDCT) scanners offer improved liver imaging with isotropic resolution and faster scans. Optimizing protocols enhances the detection and characterization of focal liver lesions.
Area of Science:
- Radiology and Medical Imaging
- Hepatology
- Oncology
Background:
- Multidetector-row CT (MDCT) has revolutionized liver imaging capabilities.
- Newer MDCT generations enable true isotropic imaging with high z-axis resolution (0.3-0.6 mm) and rapid acquisition times (seconds).
Purpose of the Study:
- To highlight the necessity of optimized examination protocols for MDCT liver imaging.
- To discuss the benefits of advanced imaging techniques for detecting and characterizing focal liver lesions, including hepatocellular carcinoma (HCC).
Main Methods:
- Utilizing advanced multidetector-row CT (MDCT) scanners (40-64 row).
- Optimizing protocols: contrast material flow rate, scan delay, and number of scans.
- Employing 3D reconstructions: multiplanar reconstructions (MPR) and curved planar reconstructions (CPR).
Main Results:
- Achieved true isotropic imaging with high spatial resolution.
- Demonstrated clinical value of 3D reconstructions for assessing vascular and biliary infiltration.
- Identified potential advantages of double arterial phase scans for HCC detection.
Conclusions:
- Optimized MDCT protocols significantly improve the detection and characterization of focal liver lesions.
- Advanced MDCT imaging, including 3D reconstructions, is crucial for comprehensive liver assessment.
- Further investigation into double arterial phase scans may enhance HCC diagnosis.