{"id":2914,"date":"2024-04-09T10:55:39","date_gmt":"2024-04-09T08:55:39","guid":{"rendered":"https:\/\/www.gelabco.com\/equipment\/tomographic-gamma-cameras\/"},"modified":"2025-02-06T11:45:48","modified_gmt":"2025-02-06T10:45:48","slug":"tomographic-gamma-cameras","status":"publish","type":"page","link":"https:\/\/www.gelabco.com\/en\/equipment\/tomographic-gamma-cameras\/","title":{"rendered":"Tomographic gamma cameras"},"content":{"rendered":"\t\t
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Tomographic gamma cameras<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tGT-1 Tomographic spatial resolution\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tThis test characterizes the spatial resolution in tomographic reconstruction. Using the reconstructed study of a point source obtained through filtered backprojection, the FWHM is calculated in each direction (X, Y, Z) by fitting a Gaussian function to the count profile obtained after integrating the counts in the direction perpendicular to the one for which the FWHM is being calculated.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\tThe determination of the center of rotation involves quantifying deviations in the rotational axis of the gamma camera's detector head. The detector head of tomographic cameras moves around the patient to acquire various projections, which are then reconstructed to generate tomographic slices. If the center of rotation does not remain constant throughout the entire orbit of the detector head, artifacts may appear in the reconstructed images.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tGT-3 Tomographic uniformity\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tTomographic uniformity involves obtaining reconstructed images of a uniform cylindrical source. Planar non-uniformity and collimator inhomogeneity can cause ring artifacts in the cross-sectional slices, which are easily detectable in images of a homogeneous source but are difficult to discern in patient studies. This test is the three-dimensional equivalent of planar uniformity.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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EQUIPMENT QUALITY CONTROL<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\tUptake systems\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t\n\t\t\tQuality control tests \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\tSurgical probes\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t\n\t\t\tQuality control tests \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\tPlanar gamma cameras\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t\n\t\t\tQuality control tests \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\tPET scanners\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t\n\t\t\tQuality control tests \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\tDose calibrators\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t\n\t\t\tQuality control tests \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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For more information<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Contact with us<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\n\t\t\t\n\t\t\t\n\t\t\t\t\t\t\t\t\tContact us<\/span>\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<\/span>\n\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\n\t\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Tomographic gamma cameras GT-1 Tomographic spatial resolution This test characterizes the spatial resolution in tomographic reconstruction. Using the reconstructed study of a point source obtained through filtered backprojection, the FWHM is calculated in each direction (X, Y, Z) by fitting a Gaussian function to the count profile obtained after integrating the counts in the direction perpendicular to the one for which the FWHM is being calculated. GT-2 Center of rotation The determination of the center of rotation involves quantifying deviations in the rotational axis of the gamma camera’s detector head. The detector head of tomographic cameras moves around the patient to acquire various projections, which are then reconstructed to generate tomographic slices. If the center of rotation does not remain constant throughout the entire orbit of the detector head, artifacts may appear in the reconstructed images. GT-3 Tomographic uniformity Tomographic uniformity involves obtaining reconstructed images of a uniform cylindrical source. Planar non-uniformity and collimator inhomogeneity can cause ring artifacts in the cross-sectional slices, which are easily detectable in images of a homogeneous source but are difficult to discern in patient studies. This test is the three-dimensional equivalent of planar uniformity. EQUIPMENT QUALITY CONTROL For more information Contact with us Contact us<\/p>\n","protected":false},"author":1,"featured_media":2688,"parent":2910,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"class_list":["post-2914","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/pages\/2914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/comments?post=2914"}],"version-history":[{"count":5,"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/pages\/2914\/revisions"}],"predecessor-version":[{"id":3176,"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/pages\/2914\/revisions\/3176"}],"up":[{"embeddable":true,"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/pages\/2910"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/media\/2688"}],"wp:attachment":[{"href":"https:\/\/www.gelabco.com\/en\/wp-json\/wp\/v2\/media?parent=2914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}