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Grosser OS, Volk M, Georgiades M, Punzet D, Alsawalhi B, Kupitz D, Omari J, Wissel H, Kreissl MC, Rose G, Pech M. Effect of Spectral Filtering and Segmental X-ray Tube Current Switch-Off on Interventionalist's Scatter Exposure during CT Fluoroscopy. Bioengineering (Basel) 2024; 11:838. [PMID: 39199796 PMCID: PMC11351108 DOI: 10.3390/bioengineering11080838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Revised: 08/11/2024] [Accepted: 08/14/2024] [Indexed: 09/01/2024] Open
Abstract
Dose optimization in computed tomography (CT) is crucial, especially in CT fluoroscopy (fluoro-CT) used for real-time navigation, affecting both patient and operator safety. This study evaluated the impact of spectral X-ray filtering using a tin filter (Sn filter), and a method called partial-angle computed tomography (PACT), which involves segmentally switching off the X-ray tube current at the ambient dose rate H˙*(10) at the interventional radiologist's (IR) position. Measurements were taken at two body regions (upper body: head/neck; lower body: lower legs/feet) using a 120 kV X-ray tube voltage, 3 × 5.0 mm CT collimation, 0.5 s rotation speed, and X-ray tube currents of 43 Eff.mAs (without Sn filter) and 165 Eff.mAs (with Sn filter). The study found significant dose reductions in both body regions when using the Sn filter and PACT together. For instance, in the upper body region, the combination protocol reduced H˙*(10) from 11.8 µSv/s to 6.1 µSv/s (p < 0.0001) compared to the protocol without using these features. Around 8% of the reduction (about 0.5 µSv/s) is attributed to the Sn filter (p = 0.0005). This approach demonstrates that using the Sn filter along with PACT effectively minimizes radiation exposure for the IR, particularly protecting areas like the head/neck, which can only be insufficiently covered by (standard) radiation protection material.
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Affiliation(s)
- Oliver S. Grosser
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
| | - Martin Volk
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
| | - Marilena Georgiades
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
| | - Daniel Punzet
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
- Chair of Medical Telematics and Medical Technics, Institute of Medical Engineering, Faculty of Electrical Engineering and Information Technology, Otto-von-Guericke University, 39106 Magdeburg, Germany
| | - Bahaa Alsawalhi
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
| | - Dennis Kupitz
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
| | - Jazan Omari
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
| | - Heiko Wissel
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
| | - Michael C. Kreissl
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
| | - Georg Rose
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
- Chair of Medical Telematics and Medical Technics, Institute of Medical Engineering, Faculty of Electrical Engineering and Information Technology, Otto-von-Guericke University, 39106 Magdeburg, Germany
| | - Maciej Pech
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-von-Guericke University, 39120 Magdeburg, Germany; (M.V.); (M.G.); (B.A.); (D.K.); (M.P.)
- Research Campus STIMULATE, Otto-von-Guericke University, 39106 Magdeburg, Germany; (D.P.)
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Shi HM, Sun ZC, Ju FH. Understanding the harm of low‑dose computed tomography radiation to the body (Review). Exp Ther Med 2022; 24:534. [PMID: 35911849 DOI: 10.3892/etm.2022.11461] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/24/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Hai-Min Shi
- Department of Gynecology and Obstetrics Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China
| | - Zhi-Chao Sun
- Department of Medical Imaging, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China
| | - Fang-He Ju
- Department of Respiratory Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang 310006, P.R. China
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