[Radiation exposure in diagnostic CT: comparison between spiral CT and standard CT].
CT-Dose-Index of Standard-CT corresponds to CT-Dose-Effect-Index of Spiral-CT. Spiral-CT provides a continuous data acquisition with well balanced dose profiles. Increasing pitch reduces radiation dose and nevertheless an unbroken reconstruction of scanned volume is possible. In contrast to Standard-CT, small parts at both ends of the volume scan are not reconstructed. Volume-Dose-Index therefore is elevated in short scan times but corresponds to that of Standard-CT in long scan times. 1 mm slices cause more radiation exposure due to their broadened dose profiles.
D004867:Equipment Design; D006801:Humans; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*
Strahlenexposition bei der CT-Diagnostik: Vergleich zwischen Spiral-CT und Standard-CT.