{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T04:30:39Z","timestamp":1790483439458,"version":"4.1.0"},"reference-count":31,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2004,12,20]],"date-time":"2004-12-20T00:00:00Z","timestamp":1103500800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medical Physics"],"published-print":{"date-parts":[[2005,1]]},"abstract":"We investigated temporal performance of amorphous selenium (a\u2010Se) detectors specifically designed for mammographic imaging. Our goal is to quantify the inherent lag and ghosting of a\u2010Se photoconductor as a function of imaging conditions. Two small area electroded a\u2010Se samples, one positively and the other negatively biased on the entrance side of x rays, were used in the experiments. The study of lag and ghosting was performed by delivering a number of raw exposures as experienced in screening mammography to the samples at different electric field strength while measuring the current through the a\u2010Se sample. Ghosting at different operational conditions was quantified as the percentage x\u2010ray sensitivity (x\u2010ray generated photocurrent measured from the sample) reduction compared to before irradiation. Lag was determined by measuring the residual current of a\u2010Se at a given time after the end of each x\u2010ray exposure. Both lag and ghosting were measured as a function of and cumulative exposure. The values of used in our experiments ranged from 1 to 20 V\/\u03bcm. It was found that ghosting increases with exposure and decreases with for both samples because of the dominant effect of recombination between trapped electrons and x\u2010ray generated holes. Lag on the other hand has different dependence on and cumulative exposure. At , the first frame lag for both samples changed slowly with cumulative exposure, with a range of 0.2%\u20131.7% for the positively biased sample and 0.5%\u20138% for the negatively biased sample. Overall the positively biased sample has better temporal performance than the negatively biased sample due to the lower density of trapped electrons. The impact of time interval between exposures on the temporal performance was also investigated. Recovery of ghosting with longer time interval was observed, which was attributed to the neutralization of trapped electrons by injected holes through dark current.<\/jats:p>","DOI":"10.1118\/1.1827791","type":"journal-article","created":{"date-parts":[[2005,1,11]],"date-time":"2005-01-11T23:02:26Z","timestamp":1105484546000},"page":"128-136","source":"Crossref","is-referenced-by-count":33,"title":["Temporal performance of amorphous selenium mammography detectors"],"prefix":"10.1002","volume":"32","author":[{"given":"Bo","family":"Zhao","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2004,12,20]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.317017"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1569273"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.384485"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1707755"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.349518"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.465568"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.203.3.9169721"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.465557"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.595767"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.465559"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1510128"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.465556"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.349500"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.150.1.6359264"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.484075"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.480388"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1713298"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1088\/0022-3727\/35\/21\/305"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.349518"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.598100"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1449874"},{"key":"e_1_2_6_23_1","doi-asserted-by":"publisher","DOI":"10.1557\/PROC-467-919"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.317051"},{"key":"e_1_2_6_25_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1513157"},{"key":"e_1_2_6_26_1","volume-title":"Optoelectronics & Photonics: Principles & Practices","author":"Kasap Safa O.","year":"2003"},{"key":"e_1_2_6_27_1","doi-asserted-by":"publisher","DOI":"10.1080\/09500838808214730"},{"key":"e_1_2_6_28_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.535546"},{"key":"e_1_2_6_29_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.430913"},{"key":"e_1_2_6_30_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.465633"},{"key":"e_1_2_6_31_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.384511"},{"key":"e_1_2_6_32_1","doi-asserted-by":"publisher","DOI":"10.1117\/12.480486"}],"container-title":["Medical Physics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1118%2F1.1827791","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1118%2F1.1827791","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/aapm.onlinelibrary.wiley.com\/doi\/pdf\/10.1118\/1.1827791","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,4]],"date-time":"2023-10-04T00:22:14Z","timestamp":1696378934000},"score":1,"resource":{"primary":{"URL":"https:\/\/aapm.onlinelibrary.wiley.com\/doi\/10.1118\/1.1827791"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,12,20]]},"references-count":31,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2005,1]]}},"alternative-id":["10.1118\/1.1827791"],"URL":"https:\/\/doi.org\/10.1118\/1.1827791","archive":["Portico"],"relation":{},"ISSN":["0094-2405","2473-4209"],"issn-type":[{"value":"0094-2405","type":"print"},{"value":"2473-4209","type":"electronic"}],"subject":[],"published":{"date-parts":[[2004,12,20]]}}}