Article ; Online: Optimized radiological alert thresholds based on device dosimetric information and peak skin dose in vascular fluoroscopically guided intervention.
2020 Volume 31, Issue 5, Page(s) 3027–3034
Abstract: Objectives: The National Council on Radiation Protection (NCRP) report no. 168 recommended that during fluoroscopically guided interventions (FGIs), each patient should be monitored when one of the following thresholds is reached: an air kerma > 5 Gy, a ...
Abstract | Objectives: The National Council on Radiation Protection (NCRP) report no. 168 recommended that during fluoroscopically guided interventions (FGIs), each patient should be monitored when one of the following thresholds is reached: an air kerma > 5 Gy, a kerma area product (KAP) > 500 Gy.cm Methods: Overall, 108 patients who underwent FGI in which at least one NCRP threshold was reached and PSD was measured were considered. The correlation between all metrics was assessed using principal component analysis (PCA). ROC curves and the sensitivity/specificity of both NCRP and OT to predict PSD > 3 Gy were evaluated. Results: The PCA shows that FGI can be decomposed with two components based on time and dose variables. Only KAP and kerma were correlated with PSD. The overall sensitivity and specificity of the new OT regarding KAP (67.6/93.0), kerma (97.3/81.7), and time (62.2/62.0) were better compared with NCRP thresholds (97.3/16.9, 40.5/95.4, and 21.6/74.7). Conclusions: This study shows that fluoroscopy time is not a relevant metric when used to predict PSDs > 3 Gy. By adapting KAP and kerma thresholds to predict PSD over 3 Gy, patient follow-ups following vascular FGI can be improved. Key points: • In vascular fluoroscopically guided interventions, principal component analysis demonstrates that between fluoroscopy time, KAP, and kerma, only the two last were correlated to the peak skin dose. • Optimized thresholds replacing NRCP ones obtained with ROC curves analysis were 85,451 μGy.cm |
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MeSH term(s) | Fluoroscopy ; Humans ; Radiation Dosage ; Radiation Protection ; Radiography, Interventional ; Radiometry |
Language | English |
Publishing date | 2020-11-06 |
Publishing country | Germany |
Document type | Journal Article |
ZDB-ID | 1085366-2 |
ISSN | 1432-1084 ; 0938-7994 ; 1613-3749 |
ISSN (online) | 1432-1084 |
ISSN | 0938-7994 ; 1613-3749 |
DOI | 10.1007/s00330-020-07422-3 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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