id:"swepub:oai:DiVA.org:umu-19134"
Sökning: id:"swepub:oai:DiVA.org:umu-19134" > Evaluation of appla...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04615naa a2200529 4500 | |
| 001 | oai:DiVA.org:umu-19134 | |
| 003 | SwePub | |
| 008 | 090304s2003 | |||||||||||000 ||eng| | |
| 009 | oai:DiVA.org:ltu-6797 | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-191342 URI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67972 URI |
| 024 | 7 | a https://doi.org/10.1007/BF023448872 DOI |
| 040 | a (SwePub)umud (SwePub)ltu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Eklund, Andersu Umeå universitet,Radiofysik,Umeå University Hospital, Department of Biomedical Engineering & Informatics4 aut0 (Swepub:umu)anek0025 |
| 245 | 1 0 | a Evaluation of applanation resonator sensors for intra-ocular pressure measurement :b results from clinical and in vitro studies. |
| 264 | 1 | c 2003 |
| 338 | a print2 rdacarrier | |
| 500 | a Upprättat; 2003; 20070530 (andbra) | |
| 520 | a Glaucoma is an eye disease that, in its most common form, is characterised by high intra-ocular pressure (IOP), reduced visual field and optic nerve damage. For diagnostic purposes and for follow-up after treatment, it is important to have simple and reliable methods for measuring IOP. Recently, an applanation resonator sensor (ARS) for measuring IOP was introduced and evaluated using an in vitro pig-eye model. In the present study, the first clinical evaluation of the same probe has been carried out, with experiments in vivo on human eyes. There was a low but significant correlation between IOP(ARS) and the IOP measured with a Goldmann applanation tonometer (r = 0.40, p = 0.001, n = 72). However, off-centre positioning of the sensor against the cornea caused a non-negligible source of error. The sensor probe was redesigned to have a spherical, instead of flat, contact surface against the eye and was evaluated in the in vitro model. The new probe showed reduced sensitivity to off-centre positioning, with a decrease in relative deviation from 89% to 11% (1 mm radius). For normalised data, linear regression between IOP(ARS) and direct IOP measurement in the vitreous chamber showed a correlation of r = 0.97 (p < 0.001, n = 108) and a standard deviation for the residuals of SD < or = 2.18 mm Hg (n = 108). It was concluded that a spherical contact surface should be preferred and that further development towards a clinical instrument should focus on probe design and signal analysis. | |
| 650 | 7 | a TEKNIK OCH TEKNOLOGIERx Medicinteknikx Medicinsk laboratorie- och mätteknik0 (SwePub)206012 hsv//swe |
| 650 | 7 | a ENGINEERING AND TECHNOLOGYx Medical Engineeringx Medical Laboratory and Measurements Technologies0 (SwePub)206012 hsv//eng |
| 650 | 7 | a MEDICIN OCH HÄLSOVETENSKAPx Klinisk medicinx Oftalmologi0 (SwePub)302172 hsv//swe |
| 650 | 7 | a MEDICAL AND HEALTH SCIENCESx Clinical Medicinex Ophthalmology0 (SwePub)302172 hsv//eng |
| 650 | 7 | a TEKNIK OCH TEKNOLOGIERx Medicinteknikx Annan medicinteknik0 (SwePub)206992 hsv//swe |
| 650 | 7 | a ENGINEERING AND TECHNOLOGYx Medical Engineeringx Other Medical Engineering0 (SwePub)206992 hsv//eng |
| 653 | a resonance sensor | |
| 653 | a intra-ocular pressure | |
| 653 | a Medical engineering | |
| 653 | a Medicinsk teknik | |
| 653 | a Ophtalmiatrics | |
| 653 | a Oftalmiatrik | |
| 653 | a Ophtalmology | |
| 653 | a oftalmiatrik | |
| 653 | a Medical Engineering for Healthcare | |
| 700 | 1 | a Lindén, Christinau Umeå universitet,Institutionen för klinisk vetenskap,Umeå University, Department of Clinical Science, Ophthalmology4 aut0 (Swepub:umu)chli0002 |
| 700 | 1 | a Bäcklund, Tomasu Umeå universitet,Radiofysik,Umeå University Hospital, Department of Biomedical Engineering & Informatics4 aut0 (Swepub:umu)bato0003 |
| 700 | 1 | a Andersson, Britt M,d 1962-u Umeå universitet,Institutionen för tillämpad fysik och elektronik,Centrum för medicinsk teknik och fysik (CMTF),Umeå University. Department of Applied Physics and Electronics4 aut0 (Swepub:umu)bran0001 |
| 700 | 1 | a Lindahl, Olof A,d 1955-u Umeå universitet,Institutionen för tillämpad fysik och elektronik,Centrum för medicinsk teknik och fysik (CMTF)4 aut0 (Swepub:ltu)olofl |
| 710 | 2 | a Umeå universitetb Radiofysik4 org |
| 773 | 0 | t Medical and Biological Engineering and Computingg 41:2, s. 190-197q 41:2<190-197x 0140-0118x 1741-0444 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-19134 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-6797 |
| 856 | 4 8 | u https://doi.org/10.1007/BF02344887 |
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