Computer tomography (CT) has emerged as an imaging modality of choice for initial evaluation and follow-up of patients with suspected kidney stones. (1,2) Radiation doses from CT examination remains a concern, especially in young, otherwise healthy patients and those who need multiple follow-up CT exams resulting in high cumulative radiation doses. (3,4)
Efforts have been made to lower radiation doses associated with kidney stone CT (KS-CT) examinations by using low dose CT scan protocols. With integration of new generation CT scanners and Advanced Iterative Reconstruction...
Description of activity and work performed
This study was an Institutional Review Board approved, consent-waived retrospective data analysis of kidney stone CT exams (KS-CT) performed in our Institution from March 2017 through March 2018 (1 year period).
Two 3rdgeneration128and 256 slice CT scanners (Philips; Ingenuity 128 and iCT 256, respectively) were installed in our emergency-department (ED) from March 2017. Dedicated KS-CT protocols utilized on non-ED scanners in our department were adapted to ED-CT scanners (mAS=180, DRI=19, kV=100-120). Images were reconstructed using Model Based Iterative Reconstruction (MBIR) algorithm.
Doses were monitored using...
Conclusion and recommendations
The benefits of New generation CT scanners equipped with iterative reconstruction algorithms has been well reported, especially with newer generation algoriths (MBIR) demonstrating further dose reduction benefits(14).
Despite the integration of 3rd generation CT technology and advanced IR algorithms in our practice, radiation dose in Group A were higher than institutional and National averages for KS-CT exams
Although technological advances are imperative for dose reduction, however, consideration of other contributing factors are essential to achieve intended dose reduction benefits.
After installation/ upgradation of new technology,...
S. Y. Andrabi; Burlington/US - nothing to disclose C. Wald; Nahant, MA/US - Advisory Board at Philips healthcare (occasional clinical advisor) J. Broder; Burlington/US - nothing to disclose C. Martel; Burlington/US - Employee at Philips Healthcare
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Fahmy NM, Elkoushy...