[Dose reduction in computerized tomography with a new scan procedure].
A new investigation technique in computed tomography--the Smart Scan process--and the associated reduction in tube current are discussed. In addition, the reduced dosage values resulting from the reduced current values are compared with those of a standard measurement and image characteristics such as picture unit noise are evaluated. By means of three special water phantoms with dimensions corresponding to those of actual patient geometries and a pool of 183 patients, the Smart Scan process was tested by the control algorithm implemented on a spiral computer tomograph. The dosage values with and without the Smart Scan being activated were determined. Dosage reductions of up to 18% can be realized with this new examination technique. In particular, patients with transverse oval head profiles will benefit from this modality.
Giacomuzzi
S M
SM
Univ.-Klinik für Radiodiagnostik 1, Univ.-Klinik Innsbruck.
Erckert
B
B
Freund
M C
MC
Schöpf
T
T
Dessl
A
A
Jaschke
W
W
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008953:Models, Anatomic; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*
Dosisreduktion in der Computertomographie mit einem neuen Scan-Verfahren.