N-localizer (original) (raw)
The N-localizer is a device that enables guidance of stereotactic surgery or radiosurgery using tomographic images that are obtained via computed tomography (CT), magnetic resonance imaging (MRI), or positron emission tomography (PET). The N-localizer comprises a diagonal rod that spans two vertical rods to form an N-shape (Figure 1) and permits calculation of the point where a tomographic image plane intersects the diagonal rod. Attaching three N-localizers to a stereotactic instrument allows calculation of three points where a tomographic image plane intersects three diagonal rods (Figure 2). These points determine the spatial orientation of the tomographic image plane relative to the stereotactic frame.
| Property | Value |
|---|---|
| dbo:abstract | The N-localizer is a device that enables guidance of stereotactic surgery or radiosurgery using tomographic images that are obtained via computed tomography (CT), magnetic resonance imaging (MRI), or positron emission tomography (PET). The N-localizer comprises a diagonal rod that spans two vertical rods to form an N-shape (Figure 1) and permits calculation of the point where a tomographic image plane intersects the diagonal rod. Attaching three N-localizers to a stereotactic instrument allows calculation of three points where a tomographic image plane intersects three diagonal rods (Figure 2). These points determine the spatial orientation of the tomographic image plane relative to the stereotactic frame. The N-localizer is integrated with the Brown-Roberts-Wells (BRW), Kelly-Goerss, Leksell, Cosman-Roberts-Wells (CRW), Micromar-ETM03B, FiMe-BlueFrame, Macom, and Adeor-Zeppelin stereotactic frames and with the Gamma Knife radiosurgery system. An alternative to the N-localizer is the Sturm-Pastyr localizer that comprises three rods wherein two diagonal rods form a V-shape and a third, vertical rod is positioned midway between the two diagonal rods (Figure 3). The Sturm-Pastyr localizer is integrated with the Riechert-Mundinger and Zamorano-Dujovny stereotactic frames. Compared to the N-localizer, the Sturm-Pastyr localizer is less accurate and necessitates more elaborate calculations to determine the spatial orientation of the tomographic image plane relative to the stereotactic frame. In contrast to the N-localizer that does not require specification of the pixel size in a tomographic image, the Sturm-Pastyr localizer requires precise specification of the pixel size. Research conducted four decades after the introduction of the N-localizer and Sturm-Pastyr localizer has revealed computational techniques that improve the accuracy of both localizers. (en) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Photograph_of_Stereot...ame_With_3_N-localizers.jpg?width=300 |
| dbo:wikiPageID | 39330321 (xsd:integer) |
| dbo:wikiPageLength | 12302 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1106862587 (xsd:integer) |
| dbo:wikiPageWikiLink | dbc:Surgical_oncology dbr:Computed_tomography dbc:Neurosurgery dbr:Radiosurgery dbr:Magnetic_resonance_imaging dbc:Computer-assisted_surgery dbr:Positron_emission_tomography dbr:Fiducial_marker dbr:Russell_A._Brown dbr:Stereotactic_surgery |
| dbp:caption | Three N-localizers attached to a stereotactic frame. (en) |
| dbp:imageSize | 300 (xsd:integer) |
| dbp:intervention | stereotactic surgery, radiosurgery (en) |
| dbp:inventor | dbr:Russell_A._Brown |
| dbp:name | N-localizer (en) |
| dbp:specialty | neurosurgery, radiation oncology (en) |
| dbp:wikiPageUsesTemplate | dbt:Cite_book dbt:Clear dbt:Reflist dbt:Infobox_medical_equipment |
| dct:subject | dbc:Surgical_oncology dbc:Neurosurgery dbc:Computer-assisted_surgery |
| gold:hypernym | dbr:Device |
| rdf:type | dbo:Device |
| rdfs:comment | The N-localizer is a device that enables guidance of stereotactic surgery or radiosurgery using tomographic images that are obtained via computed tomography (CT), magnetic resonance imaging (MRI), or positron emission tomography (PET). The N-localizer comprises a diagonal rod that spans two vertical rods to form an N-shape (Figure 1) and permits calculation of the point where a tomographic image plane intersects the diagonal rod. Attaching three N-localizers to a stereotactic instrument allows calculation of three points where a tomographic image plane intersects three diagonal rods (Figure 2). These points determine the spatial orientation of the tomographic image plane relative to the stereotactic frame. (en) |
| rdfs:label | N-localizer (en) |
| owl:sameAs | freebase:N-localizer wikidata:N-localizer https://global.dbpedia.org/id/gJ6y |
| prov:wasDerivedFrom | wikipedia-en:N-localizer?oldid=1106862587&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Photograph_of_Stereotactic_Frame_With_3_N-localizers.jpg |
| foaf:isPrimaryTopicOf | wikipedia-en:N-localizer |
| is dbo:wikiPageWikiLink of | dbr:Radiosurgery dbr:Magnetic_resonance_imaging dbr:CT_scan dbr:Positron_emission_tomography dbr:Fiducial_marker dbr:Image-guided_radiation_therapy dbr:Image-guided_surgery dbr:Russell_A._Brown dbr:Stereotactic_surgery |
| is foaf:primaryTopic of | wikipedia-en:N-localizer |
