1
|
Guillochon N, Balde M, Popotte C, Pondard S, Desport C, Kien N, Carbillet F, Moreno R, Munier M. Validation of a New Scintillating Fiber Dosimeter for Radiation Dose Quality Control in Computed Tomography. SENSORS (BASEL, SWITZERLAND) 2023; 23:2614. [PMID: 36904817 PMCID: PMC10007295 DOI: 10.3390/s23052614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/23/2023] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
(1) Background: The IVIscan is a commercially available scintillating fiber detector designed for quality assurance and in vivo dosimetry in computed tomography (CT). In this work, we investigated the performance of the IVIscan scintillator and associated method in a wide range of beam width from three CT manufacturers and compared it to a CT chamber designed for Computed Tomography Dose Index (CTDI) measurements. (2) Methods: We measured weighted CTDI (CTDIw) with each detector in accordance with the requirements of regulatory tests and international recommendations for the minimum, maximum and the most used beam width in clinic and investigated the accuracy of the IVIscan system based on the assessment of the CTDIw deviation from the CT chamber. We also investigated the IVIscan accuracy for the whole range of the CT scans kV. (3) Results: We found excellent agreement between the IVIscan scintillator and the CT chamber for the whole range of beam widths and kV, especially for wide beams used on recent technology of CT scans. (4) Conclusions: These findings highlight that the IVIscan scintillator is a relevant detector for CT radiation dose assessments, and the method associated with calculating the CTDIw saves a significant amount of time and effort when performing tests, especially with regard to new CT technologies.
Collapse
Affiliation(s)
| | - Mamoutou Balde
- Fibermetrix, 7 Allée de l’Europe, 67960 Entzheim, France
| | - Christian Popotte
- Fibermetrix, 7 Allée de l’Europe, 67960 Entzheim, France
- INSERM U1296 Radiations: Défense, Santé, Environnement, 69008 Lyon, France
| | | | | | | | | | | | - Mélodie Munier
- Fibermetrix, 7 Allée de l’Europe, 67960 Entzheim, France
- ALARA Group, 67960 Entzheim, France
| |
Collapse
|
2
|
Devic C, Bodgi L, Sonzogni L, Pilleul F, Ribot H, De Charry C, Le Moigne F, Paul D, Carbillet F, Munier M, Foray N. Influence of cellular models and individual factor in the biological response to head CT scan exams. Eur Radiol Exp 2022; 6:17. [PMID: 35385987 PMCID: PMC8986906 DOI: 10.1186/s41747-022-00269-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 03/08/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND While computed tomography (CT) exams are the major cause of medical exposure to ionising radiation, the radiation-induced risks must be documented. We investigated the impact of the cellular models and individual factor on the deoxyribonucleic acid double-strand breaks (DSB) recognition and repair in human skin fibroblasts and brain astrocytes exposed to current head CT scan conditions. METHOD Nine human primary fibroblasts and four human astrocyte cell lines with different levels of radiosensitivity/susceptibility were exposed to a standard head CT scan exam using adapted phantoms. Cells were exposed to a single-helical (37.4 mGy) and double-helical (37.4 mGy + 5 min + 37.4 mGy) examination. DSB signalling and repair was assessed through anti-γH2AX and anti-pATM immunofluorescence. RESULTS Head CT scan induced a significant number of γH2AX and pATM foci. The kinetics of both biomarkers were found strongly dependent on the individual factor. Particularly, in cells from radiosensitive/susceptible patients, DSB may be significantly less recognised and/or repaired, whatever the CT scan exposure conditions. Similar conclusions were reached with astrocytes. CONCLUSIONS Our results highlight the importance of both individual and tissue factors in the recognition and repair of DSB after current head CT scan exams. Further investigations are needed to better define the radiosensitivity/susceptibility of individual humans.
Collapse
Affiliation(s)
- Clément Devic
- Institut National de la Santé et de la Recherche Médicale, U1296 Radiations Defense, Health and Environment Centre Léon-Bérard, 69008, Lyon, France.,FibermetrixTM SAS, 7 Allée de l'Europe, 67960, Entzheim, France
| | - Larry Bodgi
- Radiation Oncology Department, American University of Beirut Medical Center, Beirut, 1107 2020, Lebanon
| | - Laurène Sonzogni
- Institut National de la Santé et de la Recherche Médicale, U1296 Radiations Defense, Health and Environment Centre Léon-Bérard, 69008, Lyon, France
| | - Frank Pilleul
- Service de Radiologie, Centre Léon Bérard, 28 rue Laennec, 69008, Lyon, France
| | - Hervé Ribot
- Service de Radiologie, Hôpital d'Instruction des Armées, Desgenettes », Boulevard Pinel, 69003, Lyon, France
| | - Charlotte De Charry
- Service de Radiologie, Hôpital d'Instruction des Armées, Desgenettes », Boulevard Pinel, 69003, Lyon, France
| | - François Le Moigne
- Service de Radiologie, Hôpital d'Instruction des Armées, Desgenettes », Boulevard Pinel, 69003, Lyon, France
| | - Didier Paul
- Institut National de la Santé et de la Recherche Médicale, U1296 Radiations Defense, Health and Environment Centre Léon-Bérard, 69008, Lyon, France
| | - Fanny Carbillet
- Institut National de la Santé et de la Recherche Médicale, U1296 Radiations Defense, Health and Environment Centre Léon-Bérard, 69008, Lyon, France.,ALARA Expertise SAS, 7 Allée de l'Europe, 67960, Entzheim, France
| | - Mélodie Munier
- Institut National de la Santé et de la Recherche Médicale, U1296 Radiations Defense, Health and Environment Centre Léon-Bérard, 69008, Lyon, France.,FibermetrixTM SAS, 7 Allée de l'Europe, 67960, Entzheim, France
| | - Nicolas Foray
- Institut National de la Santé et de la Recherche Médicale, U1296 Radiations Defense, Health and Environment Centre Léon-Bérard, 69008, Lyon, France.
| |
Collapse
|
3
|
Devic C, Bodgi L, Sonzogni L, Pilleul F, Ribot H, Charry CD, Le Moigne F, Paul D, Carbillet F, Munier M, Foray N. Influence of cellular models and individual factor in the biological response to chest CT scan exams. Eur Radiol Exp 2022; 6:14. [PMID: 35301607 PMCID: PMC8931147 DOI: 10.1186/s41747-022-00266-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 01/28/2022] [Indexed: 11/10/2022] Open
Abstract
Background While computed tomography (CT) exams are the major cause of medical exposure to ionising radiation, there is increasing evidence that the potential radiation-induced risks must be documented. We investigated the impact of cellular models and individual factor on the deoxyribonucleic acid double-strand breaks (DSB) recognition and repair in human fibroblasts and mammary epithelial cells exposed to current chest CT scan conditions. Method Twelve human primary fibroblasts and four primary human mammary epithelial cell lines with different levels of radiosensitivity/susceptibility were exposed to a standard chest CT scan exam using adapted phantoms. Cells were exposed to a single helical irradiation (14.4 mGy) or to a topogram followed, after 1 min, by one single helical examination (1.1 mGy + 14.4 mGy). DSB signalling and repair was assessed through anti-γH2AX and anti-pATM immunofluorescence. Results Chest CT scan induced a significant number of γH2AX and pATM foci. The kinetics of both biomarkers were found strongly dependent on the individual factor. The topogram may also influence the biological response of radiosensitive/susceptible fibroblasts to irradiation. Altogether, our findings show that a chest CT scan exam may result in 2 to 3 times more unrepaired DSB in cells from radiosensitive/susceptible patients. Conclusions Both individual and tissue factors in the recognition and repair of DSB after current CT scan exams are important. Further investigations are needed to better define the radiosensitivity/susceptibility of individual humans. Supplementary Information The online version contains supplementary material available at 10.1186/s41747-022-00266-0.
Collapse
Affiliation(s)
- Clément Devic
- Institut National de la Santé et de la Recherche Médicale, U1296, « Radiations: Defense, Health and Environment », Bât Cheney A 28 Rue Laennec Centre Léon-Bérard, 69008, Lyon, France.,Fibermetrix™ SAS, 7 Allée de l'Europe, 67960, Entzheim, France
| | - Larry Bodgi
- Radiation Oncology Department, American University of Beirut Medical Center, Beirut, 1107 2020, Lebanon
| | - Laurène Sonzogni
- Institut National de la Santé et de la Recherche Médicale, U1296, « Radiations: Defense, Health and Environment », Bât Cheney A 28 Rue Laennec Centre Léon-Bérard, 69008, Lyon, France
| | - Frank Pilleul
- Département de Radiologie, Centre Léon Bérard, 28 rue Laennec, 69008, Lyon, France
| | - Hervé Ribot
- Service de Radiologie, Hôpital d'Instruction des Armées « Desgenettes », Boulevard Pinel, 69003, Lyon, France
| | - Charlotte De Charry
- Service de Radiologie, Hôpital d'Instruction des Armées « Desgenettes », Boulevard Pinel, 69003, Lyon, France
| | - François Le Moigne
- Service de Radiologie, Hôpital d'Instruction des Armées « Desgenettes », Boulevard Pinel, 69003, Lyon, France
| | - Didier Paul
- Institut National de la Santé et de la Recherche Médicale, U1296, « Radiations: Defense, Health and Environment », Bât Cheney A 28 Rue Laennec Centre Léon-Bérard, 69008, Lyon, France
| | - Fanny Carbillet
- Institut National de la Santé et de la Recherche Médicale, U1296, « Radiations: Defense, Health and Environment », Bât Cheney A 28 Rue Laennec Centre Léon-Bérard, 69008, Lyon, France.,ALARA Expertise SAS, 7 Allée de l'Europe, 67960, Entzheim, France
| | - Mélodie Munier
- Institut National de la Santé et de la Recherche Médicale, U1296, « Radiations: Defense, Health and Environment », Bât Cheney A 28 Rue Laennec Centre Léon-Bérard, 69008, Lyon, France.,Fibermetrix™ SAS, 7 Allée de l'Europe, 67960, Entzheim, France
| | - Nicolas Foray
- Institut National de la Santé et de la Recherche Médicale, U1296, « Radiations: Defense, Health and Environment », Bât Cheney A 28 Rue Laennec Centre Léon-Bérard, 69008, Lyon, France.
| |
Collapse
|
4
|
Devic C, Plagnard J, Munier M. Characterization of an Innovative Detector Based on Scintillating Fiber for Personalized Computed Tomography Dosimetry. SENSORS (BASEL, SWITZERLAND) 2021; 22:90. [PMID: 35009632 PMCID: PMC8747339 DOI: 10.3390/s22010090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
For technical and radioprotection reasons, it has become essential to develop new dosimetric tools adapted to the specificities of computed tomography (CT) to ensure precise and efficient dosimetry since the current standards are not suitable for clinical use and for new CT technological evolution. Thanks to its many advantages, plastic scintillating fibers (PSF) is a good candidate for more accurate and personalized real-time dosimetry in computed tomography, and the company Fibermetrix has developed a new device named IVISCAN® based on this technology. In this study, we evaluated performances of IVISCAN® and associated uncertainties in terms of dose-rate dependence, angular dependence, stability with cumulative dose, repeatability, energy dependence, length dependence, and special uniformity in reference and clinical computed tomography beam qualities. For repeatability, the standard deviation is less than 0.039%, and the absolute uncertainty of repeatability lies between 0.017% and 0.025%. The deviation between IVISCAN® and the reference regarding energy dependence is less than 1.88% in clinical use. Dose rate dependence results show a maximum deviation under ±2%. Angular dependence standard deviation σ is 0.8%, and the absolute uncertainty was 1.6%. We observed 1% of variation every 50 Gy steps up to a cumulative dose of 500 Gy. Probe response was found to be independent of the PSF length with a maximum deviation ΔDsize < 2.7% between the IVISCAN® probe and the 1 cm PSF probe. The presented results demonstrated that IVISCAN® performances are in accordance with metrology references and the international standard IEC61674 relative to dosemeters used in X-ray diagnostic imaging and then make it an ideal candidate for real-time dosimetry in CT applications.
Collapse
Affiliation(s)
| | - Johann Plagnard
- CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), Université Paris-Saclay, 91120 Palaiseau, France;
| | | |
Collapse
|