Publicação
CMOS X-ray imager for dental radiography
| Resumo: | This paper describes a 64 pixels X-ray imager architecture and fabrication process. The imager is composed by a 8×8 photodiodes array, fabricated in CMOS process, and an array of wells £lled with scintillating crystals. A thick-£lm of aluminum is etched in order to achieve square wells with 500 um depth. The wells are filled with CsI:Tl scintillating crystals and placed above the photodiodes. The scintillating crystals convert the X-ray energy into visible light, which is guided into the photodiodes by the re¤ective aluminum walls, avoiding crosstalk between adjacent detectors. Usually, the spatial resolution of the scintillating x-rays detectors is identical to the scintillators thickness. By using the light guides, the scintillator thickness can be adjusted in order to achieve optimal absorption ef£ciency, since the spatial resolution is established by the pixel size (200 um side). |
|---|---|
| Autores principais: | Ramos, N. F. |
| Outros Autores: | Rocha, J. G.; Lanceros-Méndez, S.; Wolffenbuttel, R. F.; Correia, J. H. |
| Assunto: | X-ray Digital radiology Scintillator Etching |
| Ano: | 2003 |
| País: | Portugal |
| Tipo de documento: | comunicação em conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867439853818347520 |
|---|---|
| author | Ramos, N. F. |
| author2 | Rocha, J. G. Lanceros-Méndez, S. Wolffenbuttel, R. F. Correia, J. H. |
| author2_role | author author author author |
| author_facet | Ramos, N. F. Rocha, J. G. Lanceros-Méndez, S. Wolffenbuttel, R. F. Correia, J. H. |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Ramos, N. F.\"},{\"Person.name\":\"Rocha, J. G.\"},{\"Person.name\":\"Lanceros-Méndez, S.\"},{\"Person.name\":\"Wolffenbuttel, R. F.\"},{\"Person.name\":\"Correia, J. H.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Ramos, N. F. Rocha, J. G. Lanceros-Méndez, S. Wolffenbuttel, R. F. Correia, J. H. |
| datacite.date.Accepted.fl_str_mv | 2003-09-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2006-02-01T11:44:14Z |
| datacite.date.embargoed.fl_str_mv | 2006-02-01T11:44:14Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | X-ray Digital radiology Scintillator Etching |
| datacite.titles.title.fl_str_mv | CMOS X-ray imager for dental radiography |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Ramos, N. F. Rocha, J. G. Lanceros-Méndez, S. Wolffenbuttel, R. F. Correia, J. H. |
| dc.date.Accepted.fl_str_mv | 2003-09-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2006-02-01T11:44:14Z |
| dc.date.embargoed.fl_str_mv | 2006-02-01T11:44:14Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/4286 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Universidade do Minho |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | X-ray Digital radiology Scintillator Etching |
| dc.title.fl_str_mv | CMOS X-ray imager for dental radiography |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_5794 |
| description | This paper describes a 64 pixels X-ray imager architecture and fabrication process. The imager is composed by a 8×8 photodiodes array, fabricated in CMOS process, and an array of wells £lled with scintillating crystals. A thick-£lm of aluminum is etched in order to achieve square wells with 500 um depth. The wells are filled with CsI:Tl scintillating crystals and placed above the photodiodes. The scintillating crystals convert the X-ray energy into visible light, which is guided into the photodiodes by the re¤ective aluminum walls, avoiding crosstalk between adjacent detectors. Usually, the spatial resolution of the scintillating x-rays detectors is identical to the scintillators thickness. By using the light guides, the scintillator thickness can be adjusted in order to achieve optimal absorption ef£ciency, since the spatial resolution is established by the pixel size (200 um side). |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | conferencePaper |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/ce57a720-4132-464e-b26e-3ec7c8f54685/download |
| id | rum_bb75c6a47c19d7f2408c94274d508b4b |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/4286 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/4286 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Ramos, N. F. Rocha, J. G. Lanceros-Méndez, S. Wolffenbuttel, R. F. Correia, J. H. |
| publishDate | 2003 |
| publisher.none.fl_str_mv | Universidade do Minho |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engUniversidade do MinhoengThis paper describes a 64 pixels X-ray imager architecture and fabrication process. The imager is composed by a 8×8 photodiodes array, fabricated in CMOS process, and an array of wells £lled with scintillating crystals. A thick-£lm of aluminum is etched in order to achieve square wells with 500 um depth. The wells are filled with CsI:Tl scintillating crystals and placed above the photodiodes. The scintillating crystals convert the X-ray energy into visible light, which is guided into the photodiodes by the re¤ective aluminum walls, avoiding crosstalk between adjacent detectors. Usually, the spatial resolution of the scintillating x-rays detectors is identical to the scintillators thickness. By using the light guides, the scintillator thickness can be adjusted in order to achieve optimal absorption ef£ciency, since the spatial resolution is established by the pixel size (200 um side).application/pdfengCMOS X-ray imager for dental radiographyRamos, N. F.Rocha, J. G.Lanceros-Méndez, S.Wolffenbuttel, R. F.Correia, J. H.HostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONEUROSENSORS, 17, Guimarães, 2003 - "Eurosensors : Proceedings of the European Conference on Solid-State Transducers". [Guimarães]: Universidade do Minho, 2003. ISBN 972-98603-1-9. p. 208-209.ISBNIsPartOf972-98603-1-92006-02-01T11:44:14Z2003-092003-09-01T00:00:00ZHandlehttps://hdl.handle.net/1822/4286http://purl.org/coar/access_right/c_abf2open accessX-rayDigital radiologyScintillatorEtching1083003 bytesother research producthttp://purl.org/coar/resource_type/c_5794conference paperhttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/ce57a720-4132-464e-b26e-3ec7c8f54685/download |
| spellingShingle | CMOS X-ray imager for dental radiography Ramos, N. F. X-ray Digital radiology Scintillator Etching |
| status | SINGLETON |
| subject.fl_str_mv | X-ray Digital radiology Scintillator Etching |
| title | CMOS X-ray imager for dental radiography |
| title_full | CMOS X-ray imager for dental radiography |
| title_fullStr | CMOS X-ray imager for dental radiography |
| title_full_unstemmed | CMOS X-ray imager for dental radiography |
| title_short | CMOS X-ray imager for dental radiography |
| title_sort | CMOS X-ray imager for dental radiography |
| topic | X-ray Digital radiology Scintillator Etching |
| topic_facet | X-ray Digital radiology Scintillator Etching |
| url | https://hdl.handle.net/1822/4286 |
| visible | 1 |