Efficacy of radiation dose reduction due to real-time monitoring and visualization of peak skin dose during coronary angiography and percutaneous coronary intervention

2017 ◽  
Vol 91 (4) ◽  
pp. 717-722 ◽  
Author(s):  
Eiji Ichimoto ◽  
Tadayuki Kadohira ◽  
Takashi Nakayama ◽  
Joseph De Gregorio
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Radiation Dose ◽  
Coronary Angiography ◽  
Dose Reduction ◽  
Real Time ◽  
Coronary Intervention ◽  
Radiation Dose Reduction ◽  
Skin Dose ◽  
Percutaneous Coronary ◽  
Peak Skin Dose

AN ASSESSMENT OF RADIATION EXPOSURE DOSES IN PATIENTS UNDERGOING PRIMARY PERCUTANEOUS CORONARY INTERVENTION BASED ON ANGIOGRAPHIC RECORDS

2018 ◽  
Vol 183 (4) ◽  
pp. 475-482 ◽  
Author(s):  
M Maghbool ◽  
M A Hosseini
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Radiation Dose ◽  
Primary Percutaneous Coronary Intervention ◽  
Standard Dose ◽  
Coronary Intervention ◽  
Skin Dose ◽  
Dose Area Product ◽  
Percutaneous Coronary ◽  
Using Data ◽  
Area Product

Abstract The stochastic and non-stochastic (deterministic) effects of radiation dose in patients undergoing primary percutaneous coronary intervention (PPCI) have been investigated using data recorded by an angiographic monitoring system. A total of 132 patients with acute myocardial infarction referred to the angiography department of Vali-Asr hospital, Fasa, Iran, during the second half of 2016 were recruited. Quantities like dose–area product (DAP), total air kerma (Ka,r) and fluoroscopy time (FT) were calculated and converted into effective dose (ED) and peak skin dose (PSD). The values for Ka,r, DAP and FT equaled 80 399.20 ± 63 312 mGy cm2, 1392.80 ± 1155.373 mGy and 524.11 ± 423.057 s, respectively, which were within the ranges reported in previous studies. After considering standard dose thresholds for Ka,r and PSD, it was revealed that only a small portion of patients had reached these thresholds and exceeded them (<3%). Moreover, ED < 20 mSv for the majority of patients was fairly consistent with results from a recent research in eight Belgian hospitals. It was shown that angiographic records are reliable for assessing radiation dose in patients.

Establishing a priori and a posteriori predictive models to assess patients’ peak skin dose in interventional cardiology. Part 2: results of the VERIDIC project

2021 ◽  
pp. 028418512110620
Author(s):  
Joelle Ann Feghali ◽  
Julie Delépierre ◽  
Olivera Ciraj Belac ◽  
Jérémie Dabin ◽  
Marine Deleu ◽  
...  
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Predictive Models ◽  
A Priori ◽  
Interventional Cardiology ◽  
Coronary Intervention ◽  
Skin Dose ◽  
A Posteriori ◽  
Tube Voltage ◽  
Percutaneous Coronary ◽  
Peak Skin Dose

Background Optimizing patient exposure in interventional cardiology is key to avoid skin injuries. Purpose To establish predictive models of peak skin dose (PSD) during percutaneous coronary intervention (PCI), chronic total occlusion percutaneous coronary intervention (CTO), and transcatheter aortic valve implantation (TAVI) procedures. Material and Methods A total of 534 PCI, 219 CTO, and 209 TAVI were collected from 12 hospitals in eight European countries. Independent associations between PSD and clinical and technical dose determinants were examined for those procedures using multivariate statistical analysis. A priori and a posteriori predictive models were built using stepwise multiple linear regressions. A fourfold cross-validation was performed, and models’ performance was evaluated using the root mean square error (RMSE), mean absolute percentage error (MAPE), coefficient of determination (R²), and linear correlation coefficient (r). Results Multivariate analysis proved technical parameters to overweight clinical complexity indices with PSD mainly affected by fluoroscopy time, tube voltage, tube current, distance to detector, and tube angulation for PCI. For CTO, these were body mass index, tube voltage, and fluoroscopy contribution. For TAVI, these parameters were sex, fluoroscopy time, tube voltage, and cine acquisitions. When benchmarking the predictive models, the correlation coefficients were r = 0.45 for the a priori model and r = 0.89 for the a posteriori model for PCI. These were 0.44 and 0.67, respectively, for the CTO a priori and a posteriori models, and 0.58 and 0.74, respectively, for the TAVI a priori and a posteriori models. Conclusion A priori predictive models can help operators estimate the PSD before performing the intervention while a posteriori models are more accurate estimates and can be useful in the absence of skin dose mapping solutions

Abstract 188: Implementation of Choosing Wisely Recommendations for Stress-First Nuclear Myocardial Perfusion Imaging

2018 ◽  
Vol 11 (suppl_1) ◽  
Author(s):  
David E Winchester ◽  
Randy Jeffrey ◽  
Carsten Schmalfuss ◽  
David C Wymer ◽  
Vicente Taasan ◽  
...  
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Myocardial Perfusion Imaging ◽  
Radiation Dose ◽  
Coronary Angiography ◽  
Myocardial Perfusion ◽  
Radiation Exposure ◽  
Perfusion Imaging ◽  
Coronary Intervention ◽  
Imaging Protocol ◽  
Percutaneous Coronary

Introduction: Current guidelines for myocardial perfusion imaging (MPI) encourage facilities to adopt patient-centered risk mitigation strategies such as individualized radiotracer dosing and stress-first imaging. Reducing radiation exposure is also a key recommendation of multiple societies participating in the Choosing Wisely campaign. The stated goal is for over 50% of studies to be performed with <9 millisieverts (mSv) of radiation exposure. We hypothesized that adoption of a stress-first/stress-only imaging protocol would substantially reduce the median radiation dose administered in our nuclear lab. Methods: We switched the standard imaging protocol at the Malcom Randall VA Medical Center nuclear cardiology laboratory from rest-stress to stress-rest. To achieve this, a physician was required to review the stress images at the time they were obtained to determine if further imaging was indicated. Estimated effective radiation doses (in mSv) were calculated based on the radiotracer activity administered (in millicuries) used industry standards techniques. We compared 2 cohorts of patients: rest-stress studies consecutively done between 7/17/17 and 11/12/17 and stress-first studies consecutively done between 11/13/17 and 5/17/17. As a balancing measure, we compared the rate of normal studies between the cohorts. A normal MPI was defined as no evidence of ischemia or infarction with a preserved ejection fraction. Results: In the stress-first cohort, the median dose was 2.8 millisieverts (mSv) compared with 14.1 mSv in the rest-stress cohort (80.1% reduction, p<0.0001). During the observed period, we estimate that 4,780 mSv of effective dose were avoided. In the rest-stress cohort, 424 studies were performed. In the stress-first cohort, 716 tests were performed, 423 stress only studies (59.1%) and 293 stress-rest studies (40.1%). The rate of normal studies in the stress-first cohort was not different from the rest-stress cohort (stress-first: 73.5%, (526/716) versus rest-stress: 71.7%, p=0.54, odds ratio 0.92, 95% CI 0.69-1.21) In the rest-stress cohort, 3 patients (1.0%) underwent coronary angiography and 2 patients (0.7%) underwent percutaneous coronary intervention (PCI). In the stress-first cohort 8 patients (1.1%) underwent coronary angiography and 2 patient (0.3%) underwent percutaneous coronary intervention (PCI). Conclusion: By switching from a rest-stress to a stress-first imaging protocol, we reduced the median radiation dose in our lab by 80%. We observed no change in the proportion of normal tests, suggesting no potential for harm with this strategy.

Total Entrance Skin Dose: An Effective Indicator of Maximum Radiation Dose to the Skin During Percutaneous Coronary Intervention

2007 ◽  
Vol 189 (4) ◽  
pp. W224-W227 ◽  
Author(s):  
Koichi Chida ◽  
Yutaka Kagaya ◽  
Haruo Saito ◽  
Yoshihiro Takai ◽  
Shoki Takahashi ◽  
...  
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Radiation Dose ◽  
Coronary Intervention ◽  
Skin Dose ◽  
Entrance Skin Dose ◽  
Percutaneous Coronary

scholarly journals Utilization of an Optimized Radiation Strategy in Primary Percutaneous Coronary Intervention for Patients with ST-Segment-Elevation Myocardial Infarction

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Xin Zhong ◽  
Wei Gao ◽  
Dong Huang ◽  
Lei Ge ◽  
Juying Qian ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Percutaneous Coronary Intervention ◽  
Radiation Dose ◽  
Dose Reduction ◽  
Coronary Intervention ◽  
St Segment Elevation ◽  
Air Kerma ◽  
Segment Elevation Myocardial Infarction ◽  
St Segment ◽  
Percutaneous Coronary

Background. Recent reports about radiation risk gradually raised the safety concerns for interventional therapy. However, limited data exist on the optimized radiation strategy in primary percutaneous coronary intervention (P-PCI) for patients with ST-segment-elevation myocardial infarction (STEMI). Methods. A total of 214 STEMI patients undergoing P-PCI were retrospectively analyzed. Patients were divided into the optimized radiation strategy (ORS) group (N = 151) and normal radiation strategy (NRS) group (N = 63) according to the radiation protocol utilized. The primary endpoint was the relative dose reduction of total air kerma. The secondary endpoint was 30-day major adverse cardiac and cerebrovascular events (MACCE), as a composite of all-cause death, reinfarction, ischemia-driven target vessel revascularization, and stroke. Results. Patient groups were well matched for baseline characteristics. There were no differences in terms of age, body mass index, radial artery access, nonculprit vessel PCI, and fluoroscopy time between 2 groups. With optimized radiation strategy, a 40.9% radiation dose reduction (901.2 ± 628.7 mGy versus 1524.0 ± 866.6 mGy, p<0.001) was obtained for total air kerma. No significant differences were found for 30-day MACCE between 2 groups (2.0% versus 1.6%, adjusted hazard ratio: 0.7, 95% confidence interval: 0.1 to 8.6, p=0.772). Conclusion. With optimized radiation strategy, significant radiation dose reduction could be achieved in P-PCI for STEMI patients. It appears to be feasible and safe to carry out the optimized radiation strategy in P-PCI for STEMI patients.

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