Dose of CT protocols acquired in clinical routine using a dual-layer detector CT scanner: A preliminary report

Autor: Arnold M. R. Schilham, H.W.A.M. de Jong, F. van Ommen, Jan Willem Dankbaar, Tim Leiner, Edwin Bennink
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Scanner
Tomography Scanners
X-Ray Computed
Image quality
Tomography
X-Ray Computed/methods
Radiation Dosage
Tomography Scanners
X-Ray Computed/statistics & numerical data
Phantoms
030218 nuclear medicine & medical imaging
Imaging
Head/radiation effects
03 medical and health sciences
0302 clinical medicine
Preliminary report
Abdomen
Thorax/radiation effects
Evaluation Studies
Journal Article
Medicine
Humans
Radiology
Nuclear Medicine and imaging
Comparative Study
X-Ray Computed/statistics & numerical data
Tomography
Retrospective Studies
Tomography Scanners
business.industry
Abdomen/radiation effects
Phantoms
Imaging
Detector
Radiation dose
Significant difference
Dual layer
Brain
Heart
General Medicine
Thorax
Clinical routine
Heart/radiation effects
X-Ray Computed/methods
Brain/radiation effects
030220 oncology & carcinogenesis
business
Nuclear medicine
Tomography
X-Ray Computed
Head
Neck/radiation effects
Neck
Zdroj: European Journal of Radiology, 112, 65. Elsevier Ireland Ltd
ISSN: 0720-048X
Popis: Purpose To assess the radiation dose associated with always-on dual-energy acquisitions in clinical practice over a broad range of clinical protocols using a dual-layer detector CT (DLCT; IQon spectral CT, Philips Healthcare) as compared to an otherwise technically equivalent single-layer detector CT (SLCT; Brilliance iCT, Philips healthcare). Materials and Methods Dose-length-product data for consecutive examinations over a six-month period acquired with DLCT were retrospectively collected and compared to consecutive examinations from an SLCT. Imaging protocols were optimized for diagnostic image quality for each system prior to data collection. Dose reports of CT protocols that were used at least 50 times on both systems were collected. After exclusion of statistical outliers, protocols were evaluated with regard to reported dose levels. Results In total, 4536 dose reports for DLCT and 5783 reports for SLCT were collected. All DLCT examinations were acquired at 120 kVp, enabling dual-energy analysis. With SLCT, 79% of examinations were acquired at 120 kVp, and 21% at 100/80 kVp. Protocols for 15 indications were used more than 50 times on both scanners. For seven protocols there was no significant difference between the two scanners (p > 0.05), whereas seven protocols were acquired with higher dose levels on SLCT compared to the DLCT (p
Databáze: OpenAIRE
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