Radiation dose reduction capabilities of a new C-arm system with optimized hard- and software
| Autor: | Christian Loewe, Johanna Moyses, Domagoj Javor, Ruediger Schernthaner |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Carcinoma
Hepatocellular Image quality Radiation Dosage Radiography Interventional 030218 nuclear medicine & medical imaging Reduction (complexity) 03 medical and health sciences 0302 clinical medicine Software medicine Humans Fluoroscopy Radiology Nuclear Medicine and imaging Prospective Studies Chemoembolization Therapeutic Drug Tapering medicine.diagnostic_test business.industry Liver Neoplasms Angiography Digital Subtraction Interventional radiology General Medicine Radiation Exposure Dose area product 030220 oncology & carcinogenesis Angiography Radiation protection Nuclear medicine business |
| Zdroj: | European Journal of Radiology. 134:109367 |
| ISSN: | 0720-048X |
| DOI: | 10.1016/j.ejrad.2020.109367 |
| Popis: | To assess the radiation dose reduction capabilities and the image quality of a new C-arm system in comparison to a standard C-arm system.Prospective, randomized, IRB approved two-arm trial design. 49 consecutive patients with primary or secondary liver cancer were treated with transarterial chemoembolization (TACE) on two different angiography units. 28 patients were treated on a conventional angiography unit B, 21 patients on unit A which provides improved hardware and optimized image processing algorithms. Dose area product (DAP) and fluoroscopy time were recorded. DSA image quality of all procedures was assessed on a four-rank-scale by two independent and blinded readers.Both cohorts showed no significant differences with regard to patient characteristics, tumor burden and fluoroscopy time. The new system resulted in a statistically significant reduction of cumulative DAP of 72% compared to the old platform (median 76 vs. 269 Gy*cm2). Individually, Fluoro-DAP and DSA-DAP decreased by 48% and 77% (p = 0.012 and p0.01), respectively. No statistically significant differences in DSA image quality were found between the two imaging platforms.The new C-arm system significantly reduced radiation exposure for TACE procedures without increased radiation time or negative impact on DSA image quality. The combination of optimized hardware and software yields the highest radiation dose reduction and is of utmost importance for patients and interventionalists. |
| Databáze: | OpenAIRE |
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