Impact of Dose-Modified Protocols on Radiation Doses in Patients Undergoing CT Examinations following Image-Guided Catheter Placement

Andrabi, Yasir; Saadeh, Thomas S.; Uppot, Raul N.; Arellano, Ronald S.; Sahani, Dushyant V.

doi:10.1016/j.jvir.2015.05.029

Cited by 3 publications

(2 citation statements)

References 30 publications

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“…The same concern occurs in the interventional field: interventionists play a pivotal role in modulating the use of ionizing radiations according to the underlying clinical problem, in each patient, but exposure to ionizing radiations is still extremely variable in the literature [8][9][10] due to the lack of standardized protocols [11]. In addition, many patients require repeated post-procedural CT controls to monitor the therapeutic response [12], with a subsequent increased exposure to ionizing radiations.…”

Section: Discussionmentioning

confidence: 99%

Untitled

2021

OAJCS

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Purpose: Analysis of a preliminary experience with CT-guided percutaneous drainage of pelvic collections/abscesses (CTPD) performed using iterative reconstruction algorithms (IRA). Methods: CTPD procedures performed with IRA (20 patients; Study group, SG) were compared with CTPD performed with a standard protocol (20 patients; Control group, CG); study period: September 2015 -July 2019. Mean procedural time, number of CT scans, Mean Computed Tomography Dose Index (CTDI) and Dose Length Product (DLP) were assessed in both groups. Technical success and complication rate were evaluated. Qualitative (readers agreement on a 4-point scale; Cohen's k) and quantitative (assessment of contrast-to-noise ratio, CNR and signal-to-noise ratio, SNR) analysis of CT images was performed between SG and CG. Results: Mean procedural time was similar between SG and CG (21.7 ± 6.2 vs 22.6 ± 5.3 minutes; p=0.62) as well as the median number of CT scans (8 vs 8.5; p=0.71). CTDI (3.1 ± 2.6 vs 19.6 ± 10.8; p<0.001) and DLP (258.1 ± 198.4 vs 2069DLP (258.1 ± 198.4 vs .4 ± 1059 p<0.001) were lower in the SG. Technical success was achieved in all the procedures. No complications were observed. Conclusion:The use of iterative reconstruction algorithms for CTPD of pelvic collections/abscesses is feasible and provides significant dose reduction, without increasing intraprocedural complications.

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Section: Discussionmentioning

confidence: 99%

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2021

OAJCS

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“…16,17 A computer can be used to create a model and reconstruct images that can reduce radiation by 34% to 42%. 18,19 The downside is that creating a model is computationally difficult and can severely impact the turnaround time of a study. 20,21 Instead of creating a new model for every scan, a computer can use statistical rules such as adaptive statistical iterative reconstruction (ASIR) by GE Healthcare.…”

Section: Introductionmentioning

confidence: 99%

Impact of Low-Dose Computed Tomography on Computed Tomography Orders and Scan Length

Simmons

Milburn

2019

TOJ

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Background: New techniques have reduced the radiation dose delivered from a computed tomography (CT) examination. These techniques do not affect the number of scans ordered, the number of phases in each examination, or the scan length, as these parameters are controlled by ordering providers and CT technologists. The purpose of this study was to determine if deploying low-dose CT resulted in an increase in radiation exposure because of more liberal ordering habits or more liberal scanning ranges.Methods: We identified the most frequent CT examination types through a retrospective study of billing data from 2013. A campaign for low-dose CT scans was implemented, and data from 2 months prior and 2 months after were collected (n=797; average age=51.0 years ± 20.5; range, 4 to 97 years) and analyzed for differences in radiation dose, overall area scanned, and number of phases requested using unpaired t tests.Results: According to the billing data, the largest category of CT scans was the abdominal CT (31% of all CT examinations). After the low-dose campaign was implemented, we observed no difference in the number of examination phases ordered (1.2 ± 0.5 vs 1.3 ± 0.6, P=0.15), no increase in length of the scan (45.1 ± 7.5 cm vs 43.7 ± 10. 4 cm, P=0.08), and an overall decrease in dose (1,069 ± 634 mGy*cm vs 676 ± 480 mGy*cm, P<0.001).Conclusion: A campaign alerting staff to the availability of low-dose CT did not cause an increase in CT examination ordering and did not impact the area scanned by technologists.

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Approach to CT Dose Optimization: Role of Registries and Benchmarking

Kalra

2017

Quality and Safety in Imaging

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Impact of Dose-Modified Protocols on Radiation Doses in Patients Undergoing CT Examinations following Image-Guided Catheter Placement

Cited by 3 publications

References 30 publications

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Impact of Low-Dose Computed Tomography on Computed Tomography Orders and Scan Length

Approach to CT Dose Optimization: Role of Registries and Benchmarking

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