{"id":656,"date":"2014-10-08T08:54:03","date_gmt":"2014-10-08T13:54:03","guid":{"rendered":"http:\/\/test.pegasuslectures.com\/blog\/?p=656"},"modified":"2014-10-22T09:54:00","modified_gmt":"2014-10-22T14:54:00","slug":"quick-concepts-incident-angle","status":"publish","type":"post","link":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/2014\/10\/08\/quick-concepts-incident-angle\/","title":{"rendered":"Quick Concepts: Incident Angle"},"content":{"rendered":"<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-845 alignright\" src=\"https:\/\/test.pegasuslectures.com\/blog\/wp-content\/uploads\/2014\/10\/QC_Incident_Angle.png\" alt=\"QC_Incident_Angle\" width=\"210\" height=\"142\" srcset=\"https:\/\/www.pegasuslectures.com\/blog\/wp-content\/uploads\/2014\/10\/QC_Incident_Angle.png 490w, https:\/\/www.pegasuslectures.com\/blog\/wp-content\/uploads\/2014\/10\/QC_Incident_Angle-300x201.png 300w\" sizes=\"(max-width: 210px) 100vw, 210px\" \/>The primary cause of most imaging artifacts is specular reflection. Specular reflection is highly angle-dependent. Because of this angle dependence, it is important to have an intuitive visualization of\u00a0<strong>incident angles<\/strong> when scanning in ultrasound.<\/p>\n<p>Anyone who has played pool comes to quickly understand specular reflection and angle dependence, employing the fact that the <strong>angle of incidence<\/strong> equals the angle of reflection. <img decoding=\"async\" loading=\"lazy\" class=\"wp-image-846 alignleft\" src=\"https:\/\/test.pegasuslectures.com\/blog\/wp-content\/uploads\/2014\/10\/QC_Incident_Angle2.png\" alt=\"QC_Incident_Angle2\" width=\"189\" height=\"106\" srcset=\"https:\/\/www.pegasuslectures.com\/blog\/wp-content\/uploads\/2014\/10\/QC_Incident_Angle2.png 558w, https:\/\/www.pegasuslectures.com\/blog\/wp-content\/uploads\/2014\/10\/QC_Incident_Angle2-300x168.png 300w\" sizes=\"(max-width: 189px) 100vw, 189px\" \/>Even though most people feel pretty comfortable around a pool table, introducing geometric terminology and applying this to ultrasound sometimes causes confusion. Reflecting surface and wavefront &#8230; wave direction and line normal &#8230; these are the foundational concepts from which incident angle is derived.<\/p>\n<p><!--more-->In this short video, <strong>angle incidence<\/strong> is explained and illustrated through animation &#8230; and as always, we discuss why it matters in your daily clinical experience.<\/p>\n<p>&nbsp;<\/p>\n<p>[iframe src=&#8221;\/\/www.youtube.com\/embed\/t6OcWzBp23M&#8221; width=&#8221;560&#8243; height=&#8221;315&#8243;]<\/p>\n<p>&nbsp;<\/p>\n<p><em>This subject matter is discussed more thoroughly in <a href=\"https:\/\/test.pegasuslectures.com\/faculty\/frank_miele.php\">Frank Miele\u2019s<\/a> \u00a0<a href=\"http:\/\/test.pegasuslectures.com\/product_info.php\/products_id\/52543\">Ultrasound Physics and Instrumentation<\/a> . Introduced in <strong>Chapter 3: Attenuation<\/strong> on pages 44-46, its practical applications are specifically outlined in <strong>Chapter 8:<\/strong> <strong>Artifacts<\/strong> during discussions on catagorizing artifacts (pages 275-281). \u00a0The importance of this concept in Doppler studies is outlined in <strong>Chapter 7:<\/strong> <strong>Doppler<\/strong> on pages 233-234 and 251-253.<\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The primary cause of most imaging artifacts is specular reflection. Specular reflection is highly angle-dependent. Because of this angle dependence, it is important to have an intuitive visualization of\u00a0incident angles when scanning in ultrasound. Anyone who has played pool comes &hellip; <a href=\"https:\/\/www.pegasuslectures.com\/blog\/index.php\/2014\/10\/08\/quick-concepts-incident-angle\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[33,20,2,26],"_links":{"self":[{"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/656"}],"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=656"}],"version-history":[{"count":19,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/656\/revisions"}],"predecessor-version":[{"id":869,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/656\/revisions\/869"}],"wp:attachment":[{"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pegasuslectures.com\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}