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8th
International Inter University Scientific Meeting
Academy of Studenica
NEW
TRENDS IN DIAGNOSTICS AND THERAPY OF MALIGNANT TUMORS
Organizer:
Institute of Oncology Sremska Kamenica, Yugoslavia
Co-organizers: Institute
for Oncology and Radiology, Belgrade, Yugoslavia;
"Aristotel School", Thessaloniki, Greece
President: Prof.Dr.
Vladimir Vit. Baltić
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IMAGE
QUALITY AND DOSE-RELATED PARAMETERS IN SPIRAL CT SCANING PROTOCOLS
O. Šveljo1,
M. Prvulović1, R. Semnic1,
M. Lučić1, B. Reljin2
1Institute
of Oncology, Sremska Kamenica, Yugoslavia
2Faculty of Electrical Engineering, Belgrade,
Yugoslavia
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ABSTRACT
Computed
tomography (CT) is generally associated with high performance in
radiological diagnostics, and is also associated with high exposure
dose. Although CT examinations make up only three to five percent
of all radiological examinations, their contribution to the total
dose in the western world amounts to about 35 to 45 percent. In
the last few years many aspects of data acquisitions and image reconstructions
in relation to the image quality have been discussed. Understanding
of the fact how CT image quality is related to acquisition and reconstruction
parameters should ensure that diagnostic information about patient
is maximized while the corresponding radiation dose is reduced.
Image reconstruction and image display in spiral CT are much more
complex than in conventional CT and optimal way of doing spiral
CT scanning is task dependent.In this presentation some of the most
important spiral CT scanning protocol parameters (tube current -
time product, pitch factor, convolution kernel), and their contribution
to patient dose and image quality will be discussed. Some new approaches
to optimizing scanning protocols and new software tools for dose
reduction in spiral CT scanning will be presented.
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Keywords:
Computed tomography, spiral; Image, quality; Dose; Protocol
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