Medical Radiology and Radiation Safety. 2014. Vol. 59. No. 4. P. 48-52

DIAGNOSTIC RADIOLODGY

N.I. Lebedev¹, M.V. Osipov², E.P. Fomin¹

An Approach to Reduce the Radiation Dose Resulted from Multislice CT of the Abdomen

1. Central Medical-Sanitary Department No. 71 of FMBA RF, Ozersk, Russia; 2. Southern Urals Biophysics Institute FMBA RF, Ozersk, Russia. Е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

Purpose: To understand whether an exception of non-enhanced phase in multislice computed tomography of the abdomen with bolus contrast enhancement affects the diagnostic results, and to determine how much it reduces the radiation dose to the patient.

Material and methods: During a two-year period since the commissioning of the multislice CT Bright Speed Elite from General Electric in the department of X-ray diagnostics and therapy of Central Medical-Sanitary Unit-71, more than 5,000 CT studies were conducted. About 10 % of these studies are the contrast-enhanced abdominal MSCT.

Results: The analysis of the data showed that the exclusion of non-enhanced phase in the abdominal CT allows up to 30 % lower the dose to the patient, and it does not cause loss of diagnostic information.

Conclusion: The MSCT studies of the abdomen with bolus contrast enhancement without using the non-enhanced phase does not degrade the quality of the diagnostic information and allows to reduce the radiation dose to the patient.

Key words: multislice CT, abdomen, contrast, non-enhanced, radiation dose