Abstract:
:Radiological imaging is progressing towards an all-digital future, across the spectrum of medical imaging techniques. Computed radiography (CR) has provided a ready pathway from screen film to digital radiography and a convenient entry point to PACS. This review briefly revisits the principles of modern CR systems and their physical imaging characteristics. Wide dynamic range and digital image enhancement are well-established benefits of CR, which lend themselves to improved image presentation and reduced rates of repeat exposures. However, in its original form CR offered limited scope for reducing the radiation dose per radiographic exposure, compared with screen film. Recent innovations in CR, including the use of dual-sided image readout and channelled storage phosphor have eased these concerns. For example, introduction of these technologies has improved detective quantum efficiency (DQE) by approximately 50 and 100%, respectively, compared with standard CR. As a result CR currently affords greater scope for reducing patient dose, and provides a more substantive challenge to the new solid-state, flat-panel, digital radiography detectors.
journal_name
Clin Radioljournal_title
Clinical radiologyauthors
Cowen AR,Davies AG,Kengyelics SMdoi
10.1016/j.crad.2007.07.009subject
Has Abstractpub_date
2007-12-01 00:00:00pages
1132-41issue
12eissn
0009-9260issn
1365-229Xpii
S0009-9260(07)00289-9journal_volume
62pub_type
杂志文章,评审abstract::Over a 12 month period all patients but one presenting to our hospital with occluded prosthetic grafts were treated by thrombolysis using local pulsed administration of tissue-type plasminogen activator (t-PA). There were 30 interventions in 23 patients but in one patient no thrombolytic was given after aspiration of ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)80683-x
更新日期:1992-12-01 00:00:00
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pub_type: 杂志文章
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journal_title:Clinical radiology
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pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(88)80279-4
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journal_title:Clinical radiology
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journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(76)80107-9
更新日期:1976-10-01 00:00:00
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journal_title:Clinical radiology
pub_type: 杂志文章,评审
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journal_title:Clinical radiology
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更新日期:2005-03-01 00:00:00
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journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)83160-5
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pub_type: 杂志文章
doi:10.1016/j.crad.2014.07.012
更新日期:2014-12-01 00:00:00
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journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(88)80024-2
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pub_type: 杂志文章
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journal_title:Clinical radiology
pub_type: 杂志文章,评审
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journal_title:Clinical radiology
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1989-01-01 00:00:00
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journal_title:Clinical radiology
pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章
doi:10.1016/s0009-9260(05)81585-5
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journal_title:Clinical radiology
pub_type: 杂志文章,评审
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journal_title:Clinical radiology
pub_type: 杂志文章
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journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2013.08.015
更新日期:2014-02-01 00:00:00