Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-Fluoroscopy
In computed tomography (CT)-guided interventions (CTIs), physicians are close to a source of scattered radiation. The physician and staff are at high risk of radiation-induced injury (cataracts). Thus, dose-reducing measures for physicians are important. However, few previous reports have examined r...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Diagnostics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4418/11/4/646 |
| _version_ | 1797538977840889856 |
|---|---|
| author | Yohei Inaba Shin Hitachi Munenori Watanuki Koichi Chida |
| author_facet | Yohei Inaba Shin Hitachi Munenori Watanuki Koichi Chida |
| author_sort | Yohei Inaba |
| collection | DOAJ |
| description | In computed tomography (CT)-guided interventions (CTIs), physicians are close to a source of scattered radiation. The physician and staff are at high risk of radiation-induced injury (cataracts). Thus, dose-reducing measures for physicians are important. However, few previous reports have examined radiation doses to physicians in CTIs. This study evaluated the radiation dose to the physician and medical staff using multi detector (MD)CT-fluoroscopy, and attempted to understand radiation-protection and -reduction methods. The procedures were performed using an interventional radiology (IVR)-CT system. We measured the occupational radiation dose (physician and nurse) using a personal dosimeter in real-time, gathered CT-related parameters (fluoroscopy time, mAs, CT dose index (CTDI), and dose length product (DLP)), and performed consecutive 232 procedures in CT-guided biopsy. Physician doses (eye lens, neck, and hand; μSv, average ± SD) in our CTIs were 39.1 ± 36.3, 23.1 ± 23.7, and 28.6 ± 31.0, respectively. Nurse doses (neck and chest) were lower (2.3 ± 5.0 and 2.4 ± 4.4, respectively) than the physician doses. There were significant correlations between the physician doses (eye and neck) and related factors, such as CT-fluoroscopy mAs (eye dose: r = 0.90 and neck dose: r = 0.83). We need to understand the importance of reducing/optimizing the dose to the physician and medical staff in CTIs. Our study suggests that physician and staff doses were not significant when the procedures were performed with the appropriate radiation protection and low-dose techniques. |
| first_indexed | 2024-03-10T12:39:50Z |
| format | Article |
| id | doaj.art-a36ccd01f0434ed89c5c1544a92fe6d2 |
| institution | Directory Open Access Journal |
| issn | 2075-4418 |
| language | English |
| last_indexed | 2024-03-10T12:39:50Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diagnostics |
| spelling | doaj.art-a36ccd01f0434ed89c5c1544a92fe6d22023-11-21T14:01:22ZengMDPI AGDiagnostics2075-44182021-04-0111464610.3390/diagnostics11040646Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-FluoroscopyYohei Inaba0Shin Hitachi1Munenori Watanuki2Koichi Chida3Course of Radiological Technology, Health Sciences, Tohoku University Graduate School of Medicine, 2-1 Seiryo, Aoba, Sendai, Miyagi 980-8575, JapanDepartment of Radiology, Tohoku University Hospital, 1-1 Seiryo, Aoba, Sendai, Miyagi 980-8575, JapanDepartment of Orthopaedic Surgery, Tohoku University Hospital, 1-1 Seiryo, Aoba, Sendai, Miyagi 980-8575, JapanCourse of Radiological Technology, Health Sciences, Tohoku University Graduate School of Medicine, 2-1 Seiryo, Aoba, Sendai, Miyagi 980-8575, JapanIn computed tomography (CT)-guided interventions (CTIs), physicians are close to a source of scattered radiation. The physician and staff are at high risk of radiation-induced injury (cataracts). Thus, dose-reducing measures for physicians are important. However, few previous reports have examined radiation doses to physicians in CTIs. This study evaluated the radiation dose to the physician and medical staff using multi detector (MD)CT-fluoroscopy, and attempted to understand radiation-protection and -reduction methods. The procedures were performed using an interventional radiology (IVR)-CT system. We measured the occupational radiation dose (physician and nurse) using a personal dosimeter in real-time, gathered CT-related parameters (fluoroscopy time, mAs, CT dose index (CTDI), and dose length product (DLP)), and performed consecutive 232 procedures in CT-guided biopsy. Physician doses (eye lens, neck, and hand; μSv, average ± SD) in our CTIs were 39.1 ± 36.3, 23.1 ± 23.7, and 28.6 ± 31.0, respectively. Nurse doses (neck and chest) were lower (2.3 ± 5.0 and 2.4 ± 4.4, respectively) than the physician doses. There were significant correlations between the physician doses (eye and neck) and related factors, such as CT-fluoroscopy mAs (eye dose: r = 0.90 and neck dose: r = 0.83). We need to understand the importance of reducing/optimizing the dose to the physician and medical staff in CTIs. Our study suggests that physician and staff doses were not significant when the procedures were performed with the appropriate radiation protection and low-dose techniques.https://www.mdpi.com/2075-4418/11/4/646CT-guided interventionseye lensoccupational radiation doseradiation protectionscattered radiation |
| spellingShingle | Yohei Inaba Shin Hitachi Munenori Watanuki Koichi Chida Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-Fluoroscopy Diagnostics CT-guided interventions eye lens occupational radiation dose radiation protection scattered radiation |
| title | Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-Fluoroscopy |
| title_full | Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-Fluoroscopy |
| title_fullStr | Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-Fluoroscopy |
| title_full_unstemmed | Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-Fluoroscopy |
| title_short | Occupational Radiation Dose to Eye Lenses in CT-Guided Interventions Using MDCT-Fluoroscopy |
| title_sort | occupational radiation dose to eye lenses in ct guided interventions using mdct fluoroscopy |
| topic | CT-guided interventions eye lens occupational radiation dose radiation protection scattered radiation |
| url | https://www.mdpi.com/2075-4418/11/4/646 |
| work_keys_str_mv | AT yoheiinaba occupationalradiationdosetoeyelensesinctguidedinterventionsusingmdctfluoroscopy AT shinhitachi occupationalradiationdosetoeyelensesinctguidedinterventionsusingmdctfluoroscopy AT munenoriwatanuki occupationalradiationdosetoeyelensesinctguidedinterventionsusingmdctfluoroscopy AT koichichida occupationalradiationdosetoeyelensesinctguidedinterventionsusingmdctfluoroscopy |