Comparison between a built-in ''dual side'' chest imaging device and a standard 'single side' CR
- Struttura Complessa Interaziendale di Fisica Sanitaria, Azienda Ospedale Universita di Padova, via Giustiniani 1, Padova, 35128 (Italy)
An integrated readout computed radiography system (Fuji XU-D1) incorporating dual-side imaging plates (ST-55BD) was analyzed in terms of modulation transfer function (MTF), noise power spectrum (NPS), and detective quantum efficiency (DQE) for standard beam qualities RQA 9 and RQA 5. NPS and DQE were assessed using a detector entrance air kerma consistent with clinical practice for chest radiography. Similar investigation was performed on a standard reader (Fuji FCR 5000) using single-side imaging plates (ST-VI). Negligible differences were found between the MTFs of the two imaging systems for RQA 9, whereas for RQA 5 the single-side system exhibited slightly superior MTF. Regarding noise response, the dual-side system turned out to be better performing for both beam qualities over a wide range of frequencies. For RQA 9, at 8 {mu}Gy, the DQE of the dual-side system was moderately higher over the whole frequency range, whereas for RQA 5, at 10 {mu}Gy, significant improvement was found at low- and midrange frequencies. As an example, at 1 cycle/mm, the following improvements in the DQE of the dual-side system were observed: +22% (RQA 9, at 8 {mu}Gy), +50% (RQA 9, at 30 {mu}Gy), and +45% (RQA 5, at 10 {mu}Gy)
- OSTI ID:
- 20853902
- Journal Information:
- Medical Physics, Vol. 34, Issue 1; Other Information: DOI: 10.1118/1.2400619; (c) 2007 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-2405
- Country of Publication:
- United States
- Language:
- English
Similar Records
Influence of cassette type on the DQE of CR systems
An image quality comparison of standard and dual-side read CR systems for pediatric radiology