Open AccessFactors affecting radiation exposure dose in nursing staff during 18 F‐ fluorodeoxyglucose positron emission tomography/computed tomography
Author(s) -
Ito Kimiteru,
Suzuki Maki,
Yamazaki Aino,
Suzuki Yoshiko,
Yokokawa Naoki,
Oosawa Tatsufumi,
Tokumaru Aya M
Publication year - 2015
Publication title -
journal of occupational health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 59
ISSN - 1348-9585
DOI - 10.1539/joh.14-0282-oa
Subject(s) - medicine , nuclear medicine , univariate analysis , logistic regression , positron emission tomography , effective dose (radiation) , multivariate analysis
Factors affecting radiation exposure dose in nursing staff during 18 F‐fluorodeoxyglucose positron emission tomography/computed tomography: Kimiteru I to , et al . Department of Diagnostic Radiology, Tokyo Metropolitan Geriatric HospitalObjective We evaluated factors associated with increased radiation exposure dose in nursing staff who assisted patients with 18 F‐fluorodeoxyglucose ( 18 F‐FDG) positron emission tomography (PET)/computed tomography (CT) examinations. Methods The Barthel Index and Mini‐Mental State Examination (MMSE) score were obtained before PET/CT examinations in 193 patients (mean age ± SD, 77.7 ± 8.0 yr). Three nurses self‐measured their radiation exposure dose while assisting patients during each PET examination. Disturbance factors during PET examinations (use of a stretcher or wheelchair, use of lines or tubes connected to the patient, use of diapers or urethral catheterization, patient age) 18 F‐FDG injection dose, and previous PET/CT experience in the patients and outpatient or inpatient status were evaluated as factors possibly associated with increased radiation exposure. Principle component analysis, univariate analysis, and multivariate regression analysis were used for assessing associations between radiation exposure dose and factors. Results The mean radiation exposure dose of the nursing staff was 6.07 ± 5.71 μSv per examination. Statistically significant factors associated with increased radiation exposure (<8 or ≥8 μSv/case) in the univariate analysis were the Barthel Index (<75 or ≥75), MMSE score (<22 or ≥22) of the patients, numbers of lines or tubes to the patient, use of a stretcher or wheelchair, and 18 F‐FDG injection dose. Multivariate logistic regression modeling showed that the Barthel Index (<75 or ≥75) and MMSE score (<22 or ≥22) of the patients were significant factors in the final model. Conclusions Lower Barthel Indexes (lower ADL) and lower MMSE scores (lower cognitive function) were independent factors associated with increased radiation exposure dose in nursing staff assisting during 18 F‐FDG PET/CT.