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[Progress in tomodensitometry. Applications in cancerology]
M Coulomb1, G Ferretti, Y Ranchoup
1Service central de radiologie et imagerie médicale, hôpital Albert-Michallon, La Tronche, France.
Bulletin Du Cancer
|December 1, 1995
Summary
Spiral CT scanners offer faster imaging and improved lesion detection compared to conventional CT. While advantageous for cancer staging, potential drawbacks include contrast media and radiation exposure.
Area of Science:
- Radiology
- Medical Imaging
- Computed Tomography
Background:
- Spiral CT scanners have largely replaced conventional CT units since 1992.
- Volumic acquisition in spiral CT presents unique technical considerations and benefits.
Purpose of the Study:
- To present technical considerations of spiral CT.
- To outline the advantages and limitations of volumic acquisition.
- To describe clinical applications of spiral CT, particularly in oncology.
Main Methods:
- Discussion of technical aspects: continuous source-detector rotation and patient translation.
- Analysis of advantages: reduced scan time, optimized contrast enhancement, advanced post-processing (multiplanar, 3D reconstructions).
- Review of clinical applications in carcinology (pharyngo-laryngeal, lung, mediastinal, sub-diaphragmatic tumors).
Main Results:
- Spiral CT significantly improves lesion detection and characterization.
- Key advantages include reduced acquisition time and optimized contrast enhancement.
- Post-processing enables versatile image reconstructions.
Conclusions:
- Spiral CT offers significant benefits for oncologic imaging, enhancing lesion detection and characterization.
- Limitations include contrast media use and radiation exposure.
- Future improvements in spiral CT technology are anticipated.