Abstract:
:Direct digital acquisition of images using a scanning laser ophthalmoscope (SLO) offers several advantages over the conventional fundus camera; in particular, the ability to produce tomographic images using a confocal aperture. This note describes measurements of the performance of an SLO. Spatial resolution, measured by the modulation transfer function, MTF, was shown to be worse along the direction of scan. As expected, image uniformity was good, with a coefficient of variation of 1.9%. While the effect of using a 100 microns diameter confocal aperture instead of one with a 400 microns diameter was to reduce slice thickness from 2600 microns to 975 microns, image intensity was reduced by a factor of 30.
journal_name
Physiol Measjournal_title
Physiological measurementauthors
Manivannan A,Sharp PF,Forrester JVdoi
10.1088/0967-3334/15/3/010subject
Has Abstractpub_date
1994-08-01 00:00:00pages
317-24issue
3eissn
0967-3334issn
1361-6579journal_volume
15pub_type
杂志文章abstract::Linear methods of reconstruction play an important role in medical electrical impedance tomography (EIT) and there is a wide variety of algorithms based on several assumptions. With the Graz consensus reconstruction algorithm for EIT (GREIT), a novel linear reconstruction algorithm as well as a standardized framework ...
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journal_title:Physiological measurement
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journal_title:Physiological measurement
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journal_title:Physiological measurement
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journal_title:Physiological measurement
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journal_title:Physiological measurement
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journal_title:Physiological measurement
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更新日期:1994-05-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2016-04-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2018-03-23 00:00:00
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journal_title:Physiological measurement
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更新日期:2016-08-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2006-10-01 00:00:00
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journal_title:Physiological measurement
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doi:10.1088/0967-3334/37/7/1163
更新日期:2016-07-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章,随机对照试验
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更新日期:2006-04-01 00:00:00
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journal_title:Physiological measurement
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更新日期:1998-05-01 00:00:00
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更新日期:2013-11-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2014-08-01 00:00:00
abstract::In this paper a description is given of the development, characterisation and first results of a thermal imaging device aimed at significantly reducing the incidence of diabetic foot ulceration (DFU). These devices will be used in three clinical centres and in two preliminary clinical trials. The first will be on heal...
journal_title:Physiological measurement
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doi:10.1088/1361-6579/aa56b1
更新日期:2017-03-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
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更新日期:2016-08-01 00:00:00
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journal_title:Physiological measurement
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journal_title:Physiological measurement
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journal_title:Physiological measurement
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更新日期:2004-02-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/31/12/005
更新日期:2010-12-01 00:00:00