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Digital subtraction angiography with an Isocon camera system: clinical applications
AJR. American Journal of Roentgenology
|January 1, 1984
Summary
A novel digital subtraction angiography (DSA) system significantly reduces radiation and contrast material for arterial imaging. While effective for diagnosis, intravenous DSA studies exhibited noticeable noise in this evaluation.
Area of Science:
- Medical Imaging
- Radiology
- Cardiovascular Imaging
Background:
- Digital subtraction angiography (DSA) is a crucial tool in diagnosing vascular diseases.
- Optimizing DSA protocols to reduce radiation dose and contrast agent volume is an ongoing clinical need.
Purpose of the Study:
- To evaluate a new imaging system for digital subtraction angiography (DSA).
- To assess the system's diagnostic image quality and compare its efficiency with conventional angiography.
Main Methods:
- The study involved 30 clinical cases utilizing a new DSA imaging system.
- The system features a rare-earth screen, Isocon camera, and a digital image-array processor.
- Intraarterial DSA was performed in conjunction with conventional arteriography for comparison.
Main Results:
- Intraarterial DSA studies achieved diagnostic image quality using half the radiation dose and contrast material compared to conventional angiography.
- Eight intravenous DSA studies for renal artery stenosis and congenital heart anomalies yielded diagnostic images, albeit with objectionable noise.
Conclusions:
- The new DSA imaging system offers significant dose and contrast reduction for intraarterial angiography.
- Further refinement is needed to address image noise in intravenous DSA applications.