{"id":672,"date":"2015-02-11T14:43:20","date_gmt":"2015-02-11T19:43:20","guid":{"rendered":"http:\/\/test.pegasuslectures.com\/blog\/?p=672"},"modified":"2015-02-12T17:38:08","modified_gmt":"2015-02-12T22:38:08","slug":"quick-concepts-trapezoidal-format","status":"publish","type":"post","link":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/2015\/02\/11\/quick-concepts-trapezoidal-format\/","title":{"rendered":"Quick Concepts: Trapezoidal Format"},"content":{"rendered":"<div id=\"attachment_1103\" style=\"width: 148px\" class=\"wp-caption alignright\"><img aria-describedby=\"caption-attachment-1103\" decoding=\"async\" loading=\"lazy\" class=\" wp-image-1103\" src=\"https:\/\/test.pegasuslectures.com\/blog\/wp-content\/uploads\/2015\/02\/trapezoid_scan.png\" alt=\"Trapezoidal scanning (with steered color box)\" width=\"138\" height=\"98\" srcset=\"https:\/\/www.pegasuslectures.com\/blog\/wp-content\/uploads\/2015\/02\/trapezoid_scan.png 301w, https:\/\/www.pegasuslectures.com\/blog\/wp-content\/uploads\/2015\/02\/trapezoid_scan-300x214.png 300w\" sizes=\"(max-width: 138px) 100vw, 138px\" \/><p id=\"caption-attachment-1103\" class=\"wp-caption-text\">Trapezoidal scanning (with steered color box)<\/p><\/div>\n<p>The ability to understand the inherent advantages and disadvantages of using different transducers for specific modalities is critical to performing effective clinical diagnostic ultrasound studies. Because it is <!--more-->essential to use the right tools for each imaging situation, I devote a complete chapter to the subject of transducers in the 5th\u00a0edition of <a href=\"http:\/\/test.pegasuslectures.com\/product_info.php\/products_id\/52543\">Ultrasound Physic and Instrumentation<\/a>.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignleft  wp-image-1102\" src=\"https:\/\/test.pegasuslectures.com\/blog\/wp-content\/uploads\/2015\/02\/trapezoid.png\" alt=\"trapezoid\" width=\"129\" height=\"92\" \/>The purpose behind designing a linear transducer that combines the mechanics of both a phased-sector transducer and an unsteered linear transducer is <span style=\"text-decoration: underline\">to extend the lateral field of view<\/span>. Specific imaging situations, like carotid scanning, benefit from this advantage.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignright  wp-image-1100\" src=\"https:\/\/test.pegasuslectures.com\/blog\/wp-content\/uploads\/2015\/02\/wing_right.png\" alt=\"wing_right\" width=\"84\" height=\"98\" \/>The animation sequence within this video helps you visualize that the trade-off to an extended field is that <strong><span style=\"text-decoration: underline\">the beams interrogate at different angles on the left and right \u201cwings\u201d<\/span><\/strong>.\u00a0 It is important to maintain an awareness of the changing <a href=\"https:\/\/test.pegasuslectures.com\/blog\/2014\/10\/08\/quick-concepts-incident-angle\/\">incident angles<\/a> on those left and right sides of the image field.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignleft  wp-image-1101\" src=\"https:\/\/test.pegasuslectures.com\/blog\/wp-content\/uploads\/2015\/02\/wing_left.png\" alt=\"wing_left\" width=\"89\" height=\"98\" \/><strong>How these wings are generated matters<\/strong> since many\u00a0artifacts are angle-dependent.\u00a0 Additionally, the ability to assess flow direction in color Doppler is contingent on your talent in recognizing the angle between the beam and the flow.<\/p>\n<p><em>This subject matter is discussed more thoroughly in Chapter 5: Transducers, of <a href=\"https:\/\/test.pegasuslectures.com\/faculty\/frank_miele.php\">Frank Miele\u2019s<\/a><\/em> <strong><a href=\"http:\/\/test.pegasuslectures.com\/product_info.php\/products_id\/52543\">Ultrasound Physics and Instrumentation<\/a> (5<sup>th<\/sup> edition)<\/strong>. \u00a0Trapezoidal Scanning<em>\u00a0is discussed specifically on page 131.<\/em><\/p>\n<p><iframe loading=\"lazy\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/vbmPJ6mqeaU?feature=oembed\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The ability to understand the inherent advantages and disadvantages of using different transducers for specific modalities is critical to performing effective clinical diagnostic ultrasound studies. Because it is<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[7,27,11,33,2,26],"_links":{"self":[{"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/672"}],"collection":[{"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=672"}],"version-history":[{"count":15,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/672\/revisions"}],"predecessor-version":[{"id":1111,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/672\/revisions\/1111"}],"wp:attachment":[{"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}