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Wilson-Stewart KS, Fontanarosa D, Malacova E, Trapp JV. Impact of dose reducing software on patient and staff temple dose during fluoroscopically guided pacemaker insertion, closure devices implantation and coronary angiography procedures. Phys Eng Sci Med 2022; 45:589-599. [PMID: 35532868 PMCID: PMC9239962 DOI: 10.1007/s13246-022-01126-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/03/2022] [Indexed: 11/03/2022]
Abstract
AbstractThe aim of this study is to investigate the effectiveness of dose reducing software (ClarityIQ) on patient and staff dose during fluoroscopically guided cardiac procedures. Dose measurements were collected in a room without dose reducing software (n = 157) and compared with similar procedures performed in two rooms with the software (n = 1141). Procedures included diagnostic coronary angiography, percutaneous coronary intervention, deployment of cardiac closure devices (for occlusion of atrial septal defect, patent foramen ovale, and atrial appendage) and insertion of permanent pacemakers. The dose reducing software was found to be effective in reducing patient and staff dose by approximately 50%. This study has added to the limited literature reporting on the capability of dose reducing software to decrease radiation exposure during the implantation of cardiac closure devices, as well as demonstrating a reduction in dose to the cardiologist and nursing staff. Administrators should ensure timely upgrades to angiographic equipment to safeguard patients and staff against the potentially adverse effects of radiation exposure. Regardless of the use of dose reducing software, the mean occupational dose during closure devices was in descending order scout > scrub > cardiologist. Scrub nurse dose was found to be higher than the cardiologist during closure devices (0.98/0.26 μSv) and diagnostic coronary angiograms (1.51/0.82 μSv). Nursing staff should be aware that their levels of radiation dose during some cardiac procedures may come close to or even exceed that of the cardiologist.
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Bru P, Dompnier A, Amara W, Haddad G, Galuscan G, Sagnol P, Steinbach M, Montagnier C, Taieb J, Beguec J, Milhem A. Radiation exposure during cardiac device implantation: Lessons learned from a multicenter registry. Pacing Clin Electrophysiol 2019; 43:87-92. [PMID: 31710385 DOI: 10.1111/pace.13842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/04/2019] [Accepted: 11/07/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND Little data are available about radiation exposure during cardiac electrical device implantation, and no dose reference levels have been published. This multicenter, prospective, observational study assesses patient and staff radiation exposure during cardiac device implantations, and aims at defining dose reference levels. METHODS Patient demographic, procedural, and radiation data were obtained for 657 procedures from nine institutions. Physician and staff exposure were measured using real-time dosimeters worn beneath and above lead apron. Statistical analysis included fluoroscopy time (FT), dose-area product (DAP), and DAP adjusted for FT and body mass index. RESULTS Pacemakers and cardioverter defibrillators were implanted in 481 and 176 patients, respectively. Of these, 152 were treated with cardiac resynchronization therapy (CRT). Median FTs were 837s (interquartile range [IQR]: 480-1323), 117s (IQR: 69-209), and 101s (IQR: 58-162), and median DAPs were 1410 (IQR: 807-2601), 150 (IQR: 72-338), and 129 (IQR: 72-332) cGy.cm² for biventricular, dual chamber, and ventricular device implantation, respectively. Dose reference levels correspond to the third quartile values. During CRT, higher exposure was observed with four X-ray systems than with the two newer and customizable ones (adjusted DAP of 0.90 [IQR: 0.26-1.01] and 0.29 [IQR: 0.23-0.39], respectively; P < .001). CONCLUSION Based on real-life measurements, this multicenter registry provides dose reference levels and may help centers assess radiation exposure. Although biventricular device implantation was responsible for the highest radiation exposure, FT was meaningfully shortened compared to previously reported values. For a same FT, the use of new generators and custom settings has significantly reduced DAP.
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Affiliation(s)
- Paul Bru
- Department of Cardiology, Groupe Hospitalier de la Rochelle Ré Aunis, La Rochelle, France
| | - Antoine Dompnier
- Department of Cardiology, Centre Hospitalier Annecy Genevois, Epagny Metz-Tessy, France
| | - Walid Amara
- Department of Cardiology, Centre Hospitalier Montfermeil, Montfermeil, France
| | - Georges Haddad
- Department of Cardiology, Centre Hospitalier Départemental Vendée, La Roche-sur-Yon, France
| | - Gianina Galuscan
- Department of Cardiology, Centre Hospitalier de Versailles, Le Chesnay, France
| | - Pascal Sagnol
- Department of Cardiology, Centre Hospitalier de Chalon-sur-Saône, Chalon-sur-Saône, France
| | - Mathieu Steinbach
- Department of Cardiology, Centre Hospitalier Haguenau, Haguenau, France
| | - Christian Montagnier
- Department of Cardiology, Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Jérôme Taieb
- Department of Cardiology, Centre Hospitalier d'Aix en Provence, Aix-en-Provence, France
| | - Julien Beguec
- Department of Cardiology, Groupe Hospitalier de la Rochelle Ré Aunis, La Rochelle, France
| | - Antoine Milhem
- Department of Cardiology, Groupe Hospitalier de la Rochelle Ré Aunis, La Rochelle, France
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- Department of Cardiology, Groupe Hospitalier de la Rochelle Ré Aunis, La Rochelle, France
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Sarno A, Andreozzi E, De Caro D, Di Meo G, Strollo AGM, Cesarelli M, Bifulco P. Real-time algorithm for Poissonian noise reduction in low-dose fluoroscopy: performance evaluation. Biomed Eng Online 2019; 18:94. [PMID: 31511017 PMCID: PMC6737613 DOI: 10.1186/s12938-019-0713-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/31/2019] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Quantum noise intrinsically limits the quality of fluoroscopic images. The lower is the X-ray dose the higher is the noise. Fluoroscopy video processing can enhance image quality and allows further patient's dose lowering. This study aims to assess the performances achieved by a Noise Variance Conditioned Average (NVCA) spatio-temporal filter for real-time denoising of fluoroscopic sequences. The filter is specifically designed for quantum noise suppression and edge preservation. It is an average filter that excludes neighborhood pixel values exceeding noise statistic limits, by means of a threshold which depends on the local noise standard deviation, to preserve the image spatial resolution. The performances were evaluated in terms of contrast-to-noise-ratio (CNR) increment, image blurring (full width of the half maximum of the line spread function) and computational time. The NVCA filter performances were compared to those achieved by simple moving average filters and the state-of-the-art video denoising block matching-4D (VBM4D) algorithm. The influence of the NVCA filter size and threshold on the final image quality was evaluated too. RESULTS For NVCA filter mask size of 5 × 5 × 5 pixels (the third dimension represents the temporal extent of the filter) and a threshold level equal to 2 times the local noise standard deviation, the NVCA filter achieved a 10% increase of the CNR with respect to the unfiltered sequence, while the VBM4D achieved a 14% increase. In the case of NVCA, the edge blurring did not depend on the speed of the moving objects; on the other hand, the spatial resolution worsened of about 2.2 times by doubling the objects speed with VBM4D. The NVCA mask size and the local noise-threshold level are critical for final image quality. The computational time of the NVCA filter was found to be just few percentages of that required for the VBM4D filter. CONCLUSIONS The NVCA filter obtained a better image quality compared to simple moving average filters, and a lower but comparable quality when compared with the VBM4D filter. The NVCA filter showed to preserve edge sharpness, in particular in the case of moving objects (performing even better than VBM4D). The simplicity of the NVCA filter and its low computational burden make this filter suitable for real-time video processing and its hardware implementation is ready to be included in future fluoroscopy devices, offering further lowering of patient's X-ray dose.
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Affiliation(s)
- A Sarno
- Università di Napoli, "Federico II", dip. di Fisica "E. Pancini" & INFN sez. di Napoli, Via Cintia, 80126, Naples, Italy.
| | - E Andreozzi
- Department of Electrical Engineering and Information Technologies, Università di Napoli "Federico II", Via Claudio, 21, 80125, Naples, Italy
- Istituti Clinici Scientifici Maugeri S.p.A.-Società Benefit, Via S. Maugeri, 4, 27100, Pavia, Italy
| | - D De Caro
- Department of Electrical Engineering and Information Technologies, Università di Napoli "Federico II", Via Claudio, 21, 80125, Naples, Italy
| | - G Di Meo
- Department of Electrical Engineering and Information Technologies, Università di Napoli "Federico II", Via Claudio, 21, 80125, Naples, Italy
| | - A G M Strollo
- Department of Electrical Engineering and Information Technologies, Università di Napoli "Federico II", Via Claudio, 21, 80125, Naples, Italy
| | - M Cesarelli
- Department of Electrical Engineering and Information Technologies, Università di Napoli "Federico II", Via Claudio, 21, 80125, Naples, Italy
- Istituti Clinici Scientifici Maugeri S.p.A.-Società Benefit, Via S. Maugeri, 4, 27100, Pavia, Italy
| | - P Bifulco
- Department of Electrical Engineering and Information Technologies, Università di Napoli "Federico II", Via Claudio, 21, 80125, Naples, Italy
- Istituti Clinici Scientifici Maugeri S.p.A.-Società Benefit, Via S. Maugeri, 4, 27100, Pavia, Italy
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Eichenlaub M, Astheimer K, Minners J, Blum T, Restle C, Maring C, Schweitzer S, Thiel U, Neumann FJ, Arentz T, Lehrmann H. Evaluation of a new ultralow-dose radiation protocol for electrophysiological device implantation: A near-zero fluoroscopy approach for device implantation. Heart Rhythm 2019; 17:90-97. [PMID: 31494091 DOI: 10.1016/j.hrthm.2019.07.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND Radiation is one of the main hazards of electrophysiological device implantation, and insertion of cardiac resynchronization therapy (CRT) devices in particular is associated with high radiation doses. OBJECTIVE The purpose of this study was to evaluate the impact of a new ultralow-dose radiation protocol on radiation doses, success rate, and safety of electrophysiological device implantations. METHODS In 2018, we established a new ultralow-dose radiation protocol (reduced pulse width, increased thickness of minimum copper filters, reduced detector entrance dose, reduced pulse rate, optimized image postprocessing settings) for de novo device implantation at our hospital. A total of 1173 patients (11% single-chamber devices, 69% dual-chamber devices, 20% CRT devices) were analyzed. Five hundred twelve patients (44%) in the ultralow-dose group were compared to 661 patients (66%) treated during 2017 with a conventional low-dose protocol. RESULTS With the ultralow-dose radiation protocol, effective doses could be reduced by 59% (median 0.25 [interquartile range: 0.11-0.63] vs median 0.10 [interquartile range: 0.03-0.28] mSv; P <.0001) per procedure without a significant change in procedure time (P = .5). This dose reduction could be achieved without decreasing procedure success (P = 1) or increasing complication rate (P = .8). Male gender, higher body mass index, increased procedure and fluoroscopy times, and use of the conventional radiation protocol were independent predictors of higher radiation doses in multivariate regression analysis. CONCLUSION By establishing a new ultralow-dose radiation protocol, we could significantly decrease radiation exposure, reaching the lowest radiation doses for electrophysiological device implantation reported to date.
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Affiliation(s)
- Martin Eichenlaub
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany.
| | - Klaus Astheimer
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Jan Minners
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Thomas Blum
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Christian Restle
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Christian Maring
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Saskia Schweitzer
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Ulrike Thiel
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Franz-Josef Neumann
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Thomas Arentz
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Heiko Lehrmann
- Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
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Hayashi S, Takenaka M, Hosono M, Nishida T. Radiation exposure during image-guided endoscopic procedures: The next quality indicator for endoscopic retrograde cholangiopancreatography. World J Clin Cases 2018; 6:1087-1093. [PMID: 30613666 PMCID: PMC6306631 DOI: 10.12998/wjcc.v6.i16.1087] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/23/2018] [Accepted: 10/31/2018] [Indexed: 02/05/2023] Open
Abstract
Endoscopic retrograde cholangiopancreatography (ERCP) is one of the most frequently used image-guided procedures in gastrointestinal endoscopy. Post-ERCP pancreatitis is an important concern, and prophylaxis, cannulation and other related technical procedures have been well documented by endoscopists. In addition, medical radiation exposure is of great concern in the general population because of its rapidly increasing frequency and its potential carcinogenic effects. International organizations and radiological societies have established diagnostic reference levels, which guide proper radiation use and serve as global standards for all procedures that use ionizing radiation. However, data on gastrointestinal fluoroscopic procedures are still lacking because the demand for these procedures has recently increased. In this review, we present the current status of quality indicators for ERCP and the methods for measuring radiation exposure in the clinical setting as the next quality indicator for ERCP. To reduce radiation exposure, knowledge of its adverse effects and the procedures for proper measurement and protection are essential. Additionally, further studies on the factors that affect radiation exposure, exposure management and diagnostic reference levels are necessary. Then, we can discuss how to manage medical radiation use in these complex fluoroscopic procedures. This knowledge will help us to protect not only patients but also endoscopists and medical staff in the fluoroscopy unit.
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Affiliation(s)
- Shiro Hayashi
- Department of Gastroenterology and Internal Medicine, Hayashi Clinic, Osaka, Suita 564-0018, Japan
- Department of Gastroenterology, Toyonaka Municipal Hospital, Osaka, Toyonaka 560-8565, Japan
| | - Mamoru Takenaka
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka, Sayama 589-8511, Japan
| | - Makoto Hosono
- Department of Radiology, Kindai University Faculty of Medicine, Osaka, Sayama 589-8511, Japan
| | - Tsutomu Nishida
- Department of Gastroenterology, Toyonaka Municipal Hospital, Osaka, Toyonaka 560-8565, Japan
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Hayash S, Nishida T, Matsubara T, Osugi N, Sugimoto A, Takahashi K, Mukai K, Nakamatsu D, Yamamoto M, Fukui K, Inada M. Radiation exposure dose and influencing factors during endoscopic retrograde cholangiopancreatography. PLoS One 2018; 13:e0207539. [PMID: 30452477 PMCID: PMC6242372 DOI: 10.1371/journal.pone.0207539] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 11/01/2018] [Indexed: 12/24/2022] Open
Abstract
Introduction Various endoscopic procedures under fluoroscopic guidance are being rapidly adopted, and radiation exposure is considered to be increasing. However, there is little concern about this issue in gastroenterology practice. This study aims to evaluate the actual radiation exposure dose (RD) during endoscopic retrograde cholangiopancreatography (ERCP) and the factors affecting the RD. Methods In this retrospective, single-center cohort study of 1157 consecutive patients who underwent ERCP between October 2012 and February 2017, we analyzed the influences of patient characteristics, procedure time (min), total fluoroscopy time (min), type of processing engine, experience of the endoscopist, and type of disease on the total RD (mGy). Results The median procedure times were 28 min for common bile duct stones (CBDS), 25 min for distal malignant biliary obstruction (MBO), and 30 min for proximal MBO. Similarly, the median fluoroscopy times were 10.3, 8.8, and 13.4 min, and the median RDs were 167, 123, and 242 mGy, respectively. Proximal MBO required significantly longer procedure time and fluoroscopy time and resulted in greater RD than distal MBO (P = 0.0006, <0.0001, <0.0001) and CBDS (P = 0.015, <0.0001, <0.0001). Multiple linear regression showed that distal MBO and a novel processing engine negatively correlate with RD (P = 0.04, <0.0001) and that proximal MBO positively correlates with RD (P = 0.0001). Discussion Procedure time and fluoroscopy time were significantly longer for proximal MBO than for CBDS and distal MBO. The type of disease and processing engine significantly influenced the RD during ERCP.
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Affiliation(s)
- Shiro Hayash
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
- Department of Gastroenterology and Internal Medicine, Hayashi Clinic, Osaka, Suita, Japan
| | - Tsutomu Nishida
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
- * E-mail:
| | - Tokuhiro Matsubara
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Naoto Osugi
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Aya Sugimoto
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Kei Takahashi
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Kaori Mukai
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Dai Nakamatsu
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Masashi Yamamoto
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Koji Fukui
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Masami Inada
- Department of Gastroenterology and Hepatology, Toyonaka Municipal Hospital, Toyonaka, Japan
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