Modern Fixed Imaging Systems Reduce Radiation Exposure to Patients and Providers

2017 ◽  
Vol 52 (1) ◽  
pp. 52-58 ◽  
Author(s):  
Lars Stangenberg ◽  
Fahad Shuja ◽  
I. Martijn J. van der Bom ◽  
Martine H. G. van Alfen ◽  
Allen D. Hamdan ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Imaging System ◽  
Endovascular Aneurysm Repair ◽  
Imaging Systems ◽  
High Definition ◽  
Hybrid Procedures ◽  
Reduce Radiation Exposure ◽  
Endovascular Interventions ◽  
Fluoroscopic Imaging ◽  
Radiation Exposure To Patients

High-definition fluoroscopic imaging is required to perform endovascular procedures safely and precisely, especially in complex cases, resulting in longer procedures and increased radiation exposure. This is of importance for training institutions as trainees, even with sound instruction in as low as reasonably achievable (ALARA) principles, tend to have high radiation exposures. Recently, there was an upgrade in the imaging system allowing for comparison of radiation exposure to patients and providers. We performed an analysis of consecutive endovascular aneurysm repair (EVAR) and superficial femoral artery (SFA) interventions in the years 2013 to 2014. We recorded body mass index (BMI) and fluoroscopy time (FT) and subsequently matched 1:1 based on BMI, FT, or both. We determined radiation dose using air kerma (AK) and also recorded individual surgeons’ badge readings. Allura Xper FD20 was upgraded to AlluraClarity with ClarityIQ. We identified a total of 77 EVARs (52 pre and 25 post) and 134 SFA interventions (99 pre and 35 post). Unmatched results for EVAR were BMI pre 26.2 versus post 25.8 (kg/m2, P = .325), FT 28.1 versus 21.2 (minutes, P = .051), and AK 1178.5 versus 581 (mGy, P < .001), respectively. After matching, there was a 53.2% reduction in AK (846.1 vs 395.9 mGy; P = .004) for EVAR. Unmatched results for SFA interventions were BMI pre 28.1 versus post 26.6 ( P = .327), FT 18.7 versus 16.2 ( P = .282), and AK 285.6 versus 106.0 ( P < .001), respectively. After matching, there was a 57.0% reduction in AK (305.0 vs 131.3, P < .001). The total deep dose equivalent from surgeons’ badge readings decreased from 39.5 to 17 mrem ( P = .029). Aortic and peripheral endovascular interventions can be performed with reduced radiation exposure to patients and providers, employing modern fixed imaging systems with advanced dose reduction technology. This is of particular importance in the light of the increasing volume and complexity of endovascular and hybrid procedures as well as the prospect of decades of radiation exposure during training and practice.

scholarly journals IP147. Modern Fixed Imaging Systems Reduce Radiation Exposure to Patients and Providers

2016 ◽  
Vol 63 (6) ◽  
pp. 100S
Author(s):  
Lars Stangenberg ◽  
Fahad Shuja ◽  
Martijn van der Bom ◽  
Martine H.G. van Alfen ◽  
Allen D. Hamdan ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Imaging Systems ◽  
Reduce Radiation Exposure ◽  
Radiation Exposure To Patients

scholarly journals MP05-09 OPTIMIZATION OF FLUOROSCOPIC IMAGING TO REDUCE RADIATION EXPOSURE IN CHILDREN UNDERGOING ENDOUROLOGICAL INTERVENTION

2016 ◽  
Vol 195 (4S) ◽  
Author(s):  
Ahmed fahmy ◽  
Mohamed Youssif ◽  
Hazem Rhashad ◽  
Waleed Dawoud ◽  
Ibrahim Mokhless
Keyword(s):  
Radiation Exposure ◽  
Reduce Radiation Exposure ◽  
Fluoroscopic Imaging

Validation of a New Method for 2D Fusion Imaging Registration in a System Prepared Only for 3D

2020 ◽  
Vol 27 (3) ◽  
pp. 468-472
Author(s):  
Andreas Edsfeldt ◽  
Björn Sonesson ◽  
Helena Rosén ◽  
Marcelo H. Petri ◽  
Kiattisak Hongku ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Exposure ◽  
Imaging System ◽  
Endovascular Aneurysm Repair ◽  
Fusion Imaging ◽  
Operating Table ◽  
3D Registration ◽  
Registration Method ◽  
Dose Area Product ◽  
Single Frame

Purpose: To validate a new 2D-3D registration method of fusion imaging during aortic repair in a system prepared only for 3D-3D registration and to compare radiation doses and accuracy. Materials and Methods: The study involved 189 patients, including 94 patients (median age 70 years; 85 men) who underwent abdominal endovascular aneurysm repair (EVAR) with 2D-3D fusion on an Artis zee imaging system and 95 EVAR patients (median age 70 years; 81 men) from a prior study who had 3D-3D registration done using cone beam computed tomography (CBCT). For the 2D-3D registration, an offline CBCT of the empty operating table was imported into the intraoperative dataset and superimposed on the preoperative computed tomography angiogram (CTA). Then 2 intraoperative single-frame 2D images of the skeleton were aligned with the patient’s skeleton on the preoperative CTA to complete the registration process. A digital subtraction angiogram was done to correct any misalignment of the aortic CTA volume. Values are given as the median [interquartile range (IQR) Q1, Q3]. Results: The 2D-3D registration had an accuracy of 4.0 mm (IQR 3.0, 5.0) after bone matching compared with the final correction with DSA (78% within 5 mm). By applying the 2D-3D protocol the radiation exposure (dose area product) from the registration of the fusion image was significantly reduced compared with the 3D-3D registration [1.12 Gy∙cm2 (IQR 0.41, 2.14) vs 43.4 Gy∙cm2 (IQR 37.1, 49.0), respectively; p<0.001). Conclusion: The new 2D-3D registration protocol based on 2 single-frame images avoids an intraoperative CBCT and can be used for fusion imaging registration in a system originally designed for 3D-3D only. This 2D-3D registration protocol is accurate and leads to a significant reduction in radiation exposure.

Nonfluoroscopic imaging systems reduce radiation exposure in children undergoing ablation of supraventricular tachycardia

Heart Rhythm ◽  
2011 ◽  
Vol 8 (4) ◽  
pp. 519-525 ◽  
Author(s):  
Christina Y. Miyake ◽  
Douglas Y. Mah ◽  
Joseph Atallah ◽  
Heath P. Oikle ◽  
Monica L. Melgar ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Supraventricular Tachycardia ◽  
Imaging Systems ◽  
Reduce Radiation Exposure

EXPRESS: Design Considerations for Discrete Frequency Infrared Microscopy Systems

2021 ◽  
pp. 000370282110133
Author(s):  
Rohit Bhargava ◽  
Yamuna Dilip Phal ◽  
Kevin Yeh
Keyword(s):  
Imaging System ◽  
Chemical Imaging ◽  
Optical Component ◽  
Imaging Systems ◽  
Imaging Data ◽  
Discrete Frequency ◽  
Figures Of Merit ◽  
Design Considerations ◽  
Hardware Implementations ◽  
Measurement Capabilities

Discrete frequency infrared (DFIR) chemical imaging is transforming the practice of microspectroscopy by enabling a diversity of instrumentation and new measurement capabilities. While a variety of hardware implementations have been realized, considerations in the design of all-IR microscopes have not yet been compiled. Here we describe the evolution of IR microscopes, provide rationales for design choices, and the major considerations for each optical component that together comprise an imaging system. We analyze design choices in illustrative examples that use these components to optimize performance, under their particular constraints. We then summarize a framework to assess the factors that determine an instrument’s performance mathematically. Finally, we summarize the design and analysis approach by enumerating performance figures of merit for spectroscopic imaging data that can be used to evaluate the capabilities of imaging systems or suitability for specific intended applications. Together, the presented concepts and examples should aid in understanding available instrument configurations, while guiding innovations in design of the next generation of IR chemical imaging spectrometers.

Reducing radiation exposure to patients from kV-CBCT imaging

2010 ◽  
Vol 97 (3) ◽  
pp. 585-592 ◽  
Author(s):  
George X. Ding ◽  
Peter Munro ◽  
Jason Pawlowski ◽  
Arnold Malcolm ◽  
Charles W. Coffey
Keyword(s):  
Radiation Exposure ◽  
Radiation Exposure To Patients

Endovascular Aneurysm Sealing Is Associated With Reduced Radiation Exposure and Procedure Time Compared With Standard Endovascular Aneurysm Repair

2016 ◽  
Vol 23 (2) ◽  
pp. 285-289 ◽  
Author(s):  
George A. Antoniou ◽  
Yashika Senior ◽  
Luigi Iazzolino ◽  
Andrew England ◽  
Richard G. McWilliams ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Endovascular Aneurysm Repair ◽  
Procedure Time ◽  
Aneurysm Repair
Sign in / Sign up

Export Citation Format

Share Document