Comparison of double dosimetry algorithms for estimating the effective dose in occupational dosimetry of interventional radiology staff

Abstract Long exposure to radiation from fluoroscopy-guided interventions (FGIs) can be detrimental to both patients and radiologists. The effective doses received by the interventional radiology staff after performing 230 FGIs in a year were assessed by using double dosimetry and five various algorithms. The Shapiro–Wilk test revealed normally-distributed data (p < 0.01), while the significant correlation coefficients between the effective doses ranged between 0.88 and 1.00. As for the Bland–Altman analysis, both Niklason and Boetticher algorithms strongly supported the absence of statistical significance between the estimated effective doses. This portrays that the occupational doses received by the interventional radiology staff during FGIs fall within the acceptable limit regardless of the varied algorithms applied. In short, the Niklason and Boetticher algorithms appeared to be the more interchangeable ones for effective evaluation of doses. This is in view of their strong mutual correlations and excellent agreement.

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Awareness of radiation doses and risks among radiology residents, fellows, specialists, consultants and technologists in Jeddah, Saudi Arabia: Cross-Sectional Study. (Preprint)

10.2196/preprints.14460 ◽

2019 ◽

Author(s):

Bashayer Hassan Shuaib ◽

Rahaf Hisham Niazi ◽

Ahmed Haitham Abduljabbar ◽

Mohammed Abdulraheem Wazzan

Keyword(s):

Interventional Radiology ◽

Ionizing Radiation ◽

Statistical Significance ◽

Knowledge Score ◽

P Value ◽

Radiation Doses ◽

Cross Sectional ◽

The Right ◽

Interventional Radiology Procedures ◽

Radiology Staff

BACKGROUND Radiology now plays a major role to diagnose, monitoring, and management of several diseases; numerous diagnostic and interventional radiology procedures involve exposure to ionizing radiation. Radiology now plays a major role to diagnose, monitoring, and management of several diseases; numerous diagnostic and interventional radiology procedures involve exposure to ionizing radiation. OBJECTIVE This study aimed to discover and compare the awareness level of radiation doses, protection issues, and risks among radiology staff in Jeddah hospitals. METHODS A cross-sectional survey containing 25 questions on personal information and various aspects of radiation exposure doses and risks was designed using an online survey tool and the link was emailed to all radiology staff in eight tertiary hospitals in Jeddah. The authors were excluded from the study. A P-value of < .05 was used to identify statistical significance. All analyses were performed using SPSS, version 21. RESULTS Out of 156 participants the majority 151 (96.8%) had poor knowledge score, where the mean scores were 2.4±1.3 for doses knowledge, 2.1±1.1for cancer risks knowledge, 2.3±0.6 for general information, and 6.7±1.9 for the total score. Only 34.6% of the participants were aware of the dosage of a single-view chest x-ray, and 9.0% chose the right answer for the approximate effective dose received by a patient in a two-view. 42.9% were able to know the correct dose of CT abdomen single phase. There is a significant underestimation of cancer risk of CT studies especially for CT abdomen where only 23.7% knew the right risk. A p-value of <0.05 was used to identify statistical significance. No significant difference of knowledge score was detected regarding gender (P =.2) or work position (P=.66). CONCLUSIONS Our survey results show considerable inadequate knowledge in all groups without exception. We recommended a conscientious effort to deliver more solid education and obtain more knowledge in these matters and providing periodic training courses to teach how to minimize the dose of radiation and to avoid risk related. CLINICALTRIAL not applicable

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Simulation of H p (10) and effective dose received by the medical staff in interventional radiology procedures

Journal of Radiological Protection ◽

10.1088/1361-6498/ab2c42 ◽

2019 ◽

Vol 39 (3) ◽

pp. 809-824 ◽

Cited By ~ 3

Author(s):

P Ferrari ◽

F Becker ◽

Z Jovanovic ◽

S Khan ◽

E Bakhanova ◽

...

Keyword(s):

Interventional Radiology ◽

Effective Dose ◽

Medical Staff ◽

Interventional Radiology Procedures

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EXPERIMENTAL VALIDATION OF ALGORITHMS USED TO ESTIMATE EFFECTIVE DOSE DURING INTERVENTIONAL RADIOLOGY PROCEDURES

Radiation Protection Dosimetry ◽

10.1093/rpd/ncz136 ◽

2019 ◽

Vol 187 (1) ◽

pp. 42-49

Author(s):

P Negri ◽

F Campi ◽

S De Crescenzo ◽

L Garlati ◽

O Tambussi

Keyword(s):

Interventional Radiology ◽

Effective Dose ◽

Experimental Validation ◽

International Consensus ◽

Solid Water ◽

High Level ◽

Interventional Radiology Procedures

Abstract In IR procedures, in order to evaluate the effective dose, the importance of the double dosemeter has been recognised, one worn above and one under the apron. Over the last few decades several algorithms have been developed to combine the readings of the dosemeters, however currently there is no international consensus on which is the best one. In this work, eight irradiations, corresponding to typical interventional radiology procedures, were carried out in order to experimentally verify the accuracy of the algorithms. The patient was substituted by solid water-equivalent (RW3) layers, while effective dose to personnel was calculated by TLDs inside the Alderson Rando phantom. The results show that most of the algorithms, with a few exceptions, are too conservative, however there are many factors which can affect their accuracy, so it is impossible to achieve a high level of precision in the evaluation of the effective dose.

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