{"id":64851,"date":"2026-10-26T11:15:03","date_gmt":"2026-10-26T04:15:03","guid":{"rendered":"https:\/\/www2.si.mahidol.ac.th\/en\/?p=64851"},"modified":"2026-10-26T11:15:30","modified_gmt":"2026-10-26T04:15:30","slug":"the-first-halcyon-version-5-cancer-treatment-technology-in-asia","status":"publish","type":"post","link":"https:\/\/www2.si.mahidol.ac.th\/en\/highlights\/the-first-halcyon-version-5-cancer-treatment-technology-in-asia\/","title":{"rendered":"The First Halcyon Version 5 Cancer Treatment Technology in Asia"},"content":{"rendered":"<div id='av_section_1'  class='avia-section av-av_section-be5469b648f3c66bc848ea728be917cc main_color avia-section-small avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-64851'><div class='entry-content-wrapper clearfix'>\n<div  class='avia-button-wrap av-av_button-8f046c302bf8e134ae065fff93ecd902-wrap avia-button-left  avia-builder-el-1  avia-builder-el-no-sibling '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_button-8f046c302bf8e134ae065fff93ecd902\">\n#top #wrap_all .avia-button.av-av_button-8f046c302bf8e134ae065fff93ecd902{\nfont-size:21px;\nbackground-color:#ffffff;\nborder-color:#ffffff;\ncolor:#0b5ebd;\nborder-style:solid;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-av_button-8f046c302bf8e134ae065fff93ecd902:hover{\nbackground-color:#ffffff;\ncolor:#0b5ebd;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-av_button-8f046c302bf8e134ae065fff93ecd902 .avia-svg-icon svg:first-child{\nfill:#0b5ebd;\nstroke:#0b5ebd;\n}\n#top #wrap_all .avia-button.av-av_button-8f046c302bf8e134ae065fff93ecd902:hover .avia-svg-icon svg:first-child{\nfill:#0b5ebd;\nstroke:#0b5ebd;\n}\n<\/style>\n<a href='https:\/\/www2.si.mahidol.ac.th\/en\/highlights\/'  class='avia-button av-av_button-8f046c302bf8e134ae065fff93ecd902 av-link-btn avia-icon_select-yes-left-icon avia-size-large avia-position-left'   aria-label=\"Our Highlights\"><span class='avia_button_icon avia_button_icon_left avia-svg-icon avia-font-svg_entypo-fontello' data-av_svg_icon='left-thin' data-av_iconset='svg_entypo-fontello'><svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"31\" height=\"32\" viewBox=\"0 0 31 32\" preserveAspectRatio=\"xMidYMid meet\" aria-labelledby='av-svg-title-1' aria-describedby='av-svg-desc-1' role=\"graphics-symbol\">\n<title id='av-svg-title-1'>Left-thin<\/title>\n<desc id='av-svg-desc-1'>Left-thin<\/desc>\n<path d=\"M7.68 24l-7.68-8 7.68-8v5.12h23.68v5.696h-23.68v5.184z\"><\/path>\n<\/svg><\/span><span class='avia_iconbox_title' >Our Highlights<\/span><\/a><\/div>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id='av_section_2'  class='avia-section av-av_section-f22f0f9dd672aac3df52cf5913f6ac08 main_color avia-section-default avia-no-border-styling  avia-builder-el-2  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-64851'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-av_one_fifth-2d22dc0500e159f2b39fe7a147caf14c av_one_fifth  avia-builder-el-3  el_before_av_three_fifth  avia-builder-el-first  first flex_column_div  '     ><\/div><div  class='flex_column av-av_three_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_three_fifth  avia-builder-el-4  el_after_av_one_fifth  el_before_av_one_fifth  flex_column_div  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mvoqm9df-d79d1fd27d116a8d2867333c379e7a1e\">\n.avia-image-container.av-mvoqm9df-d79d1fd27d116a8d2867333c379e7a1e img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-mvoqm9df-d79d1fd27d116a8d2867333c379e7a1e .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-mvoqm9df-d79d1fd27d116a8d2867333c379e7a1e av-styling- avia-align-center  avia-builder-el-5  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-64852 avia-img-lazy-loading-not-64852 avia_image ' src=\"https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/10\/Halcyon-Version-5.jpg\" alt='' title='Halcyon-Version-5'  height=\"544\" width=\"974\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/10\/Halcyon-Version-5.jpg 974w, https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/10\/Halcyon-Version-5-300x168.jpg 300w, https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/10\/Halcyon-Version-5-768x429.jpg 768w, https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/10\/Halcyon-Version-5-705x394.jpg 705w\" sizes=\"(max-width: 974px) 100vw, 974px\" \/><\/div><\/div><\/div><\/div><div  class='flex_column av-av_one_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_one_fifth  avia-builder-el-6  el_after_av_three_fifth  avia-builder-el-last  flex_column_div  '     ><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_3'  class='avia-section av-av_section-f22f0f9dd672aac3df52cf5913f6ac08 main_color avia-section-default avia-no-border-styling  avia-builder-el-7  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-64851'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-av_one_fifth-2d22dc0500e159f2b39fe7a147caf14c av_one_fifth  avia-builder-el-8  el_before_av_three_fifth  avia-builder-el-first  first flex_column_div  '     ><\/div><div  class='flex_column av-av_three_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_three_fifth  avia-builder-el-9  el_after_av_one_fifth  el_before_av_one_fifth  flex_column_div  '     ><section  class='av_textblock_section av-mvoqlmi6-efc2bc31f8c83930c7315b729935fa50 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>The First Halcyon Version 5 Cancer Treatment Technology in Asia<\/h2>\n<\/div><\/section><\/div><div  class='flex_column av-av_one_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_one_fifth  avia-builder-el-11  el_after_av_three_fifth  el_before_av_one_fifth  flex_column_div  '     ><\/div><div  class='flex_column av-av_one_fifth-2d22dc0500e159f2b39fe7a147caf14c av_one_fifth  avia-builder-el-12  el_after_av_one_fifth  el_before_av_three_fifth  first flex_column_div  column-top-margin'     ><\/div><div  class='flex_column av-av_three_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_three_fifth  avia-builder-el-13  el_after_av_one_fifth  el_before_av_one_fifth  flex_column_div  column-top-margin'     ><p><section  class='av_textblock_section av-mvoqna1s-df14c8285612f003f822d87415207f2d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>By <strong>Lecturer WIWATCHAI SITTIWONG, M.D.<\/strong><br \/>\n<em>Division of Radiation Oncology, Department of Radiology<\/em><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-mvoqr6ze-40dd1e226534c0e59d5995612601638e '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><em>Radiation therapy<\/em> is one of the primary modalities in cancer treatment. The fundamental objective is to maximize the radiation dose delivered to the tumor while minimizing exposure to surrounding normal tissues. To this end, the Faculty of Medicine Siriraj Hospital, Mahidol University, has introduced the <strong>Halcyon Version 5<\/strong>\u2014<em>the latest ring-gantry linear accelerator from Varian (a Siemens Healthineers company)<\/em>\u2014for clinical use, marking its first installation in Asia. The hallmark of this system is the integration of three advanced innovations into a single platform: <strong>HyperSight<\/strong>, a high-speed imaging system delivering high-contrast images comparable to conventional CT scans within seconds, enabling physicians to clearly visualize the tumor and adjacent organs prior to every treatment fraction; the <strong>IDENTIFY<\/strong> system, a real-time patient motion tracking system that automatically pauses beam delivery if the patient moves beyond predefined tolerances; and <strong>PerfectKinetix<\/strong>, a multi-directional treatment couch that facilitates precise patient positioning and targeted treatment alignment.<\/p>\n<p>For patients, the most tangible benefit is a significantly shorter duration spent on the treatment couch. Rapid imaging paired with the ring-gantry design, which allows for continuous rotational beam delivery, helps reduce the discomfort and fatigue associated with daily treatments. The heightened precision also serves to minimize radiation-induced side effects to normal tissues. Furthermore, the system supports <strong>Adaptive Radiotherapy (ART)<\/strong>, allowing treatment plans to be dynamically adjusted in response to volumetric changes in the tumor. This enables a more highly personalized treatment approach for each patient while permitting the hospital to accommodate a larger daily patient throughput without compromising the quality of clinical care.<\/p>\n<p>The <em>Halcyon Version 5<\/em> is indicated for treating a wide array of malignancies, including breast, lung, head and neck, gastrointestinal and hepatobiliary, and prostate cancers, as well as gynecologic malignancies such as cervical cancer. Patients who stand to benefit particularly include those whose tumors change in size during the course of treatment, such as in pelvic malignancies; patients with tumors located in close proximity to critical organs requiring high-precision delivery; individuals undergoing extended courses of radiotherapy who require mid-course plan adaptations; and those with mobility limitations or difficulties remaining still for prolonged periods. Crucially, this treatment technologyis accessible to patients across all healthcare coverage schemes\u2014whether through the <em>Universal Coverage Scheme (Gold Card)<\/em>, the <em>Social Security Scheme<\/em>, the <em>Civil Servant Medical Benefit Scheme<\/em>, or <em>self-payment<\/em>. This ensures that every patient has an equal opportunity to receive treatment with state-of-the-art medical technology.<\/p>\n<p>Every instance of integrating new technology at Siriraj marks another significant milestone for a public hospital in leveraging medical advancements to expand treatment access for patients and the public. Ultimately, regardless of how advanced medical technology becomes, our unwavering commitment remains constant: ensuring that patients have access to high-quality care and receive the best possible treatment. This has always been the fundamental objective of Siriraj Hospital.<\/p>\n<p>Being the first institution in Asia to implement this system reflects Siriraj\u2019s readiness in terms of clinical knowledge, personnel, and infrastructure, standing on par with the world&#8217;s leading institutions. Our team of physicians, medical physicists, and radiation therapists will accumulate vital clinical experience and translate it into novel research. This will further elevate the standard of radiation oncology in Thailand and reaffirm our position as a medical leader in the region.<\/p>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-av_one_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_one_fifth  avia-builder-el-16  el_after_av_three_fifth  el_before_av_one_fifth  flex_column_div  column-top-margin'     ><\/div><div  class='flex_column av-av_one_fifth-2d22dc0500e159f2b39fe7a147caf14c av_one_fifth  avia-builder-el-17  el_after_av_one_fifth  el_before_av_three_fifth  first flex_column_div  column-top-margin'     ><\/div><div  class='flex_column av-av_three_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_three_fifth  avia-builder-el-18  el_after_av_one_fifth  el_before_av_one_fifth  flex_column_div  column-top-margin'     ><div id='av-masonry-1' class='av-masonry av-mvoqtbdt-2b56f73b7c66876e4f4193c9f987a41b noHover av-fixed-size av-large-gap av-hover-overlay-active av-masonry-animation-active av-masonry-col-3 av-caption-always 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https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/10\/Page-05-1.jpg 1920w\" data-sizes=\"(max-width: 1030px) 100vw, 1030px\"  aria-label=\"image Page 05-1\"  id='av-masonry-1-item-64853' data-av-masonry-item='64853' class='av-masonry-entry isotope-item post-64853 attachment type-attachment status-inherit hentry  av-masonry-item-with-image' title=\"Page 05-1\" alt=\"\"    itemprop=\"thumbnailUrl\" ><div class='av-inner-masonry-sizer'><\/div><figure class='av-inner-masonry main_color'><div class=\"av-masonry-outerimage-container\"><div class='av-masonry-image-container' style=\"background-image: url(https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/10\/Page-05-1-845x684.jpg);\"  title=\"Page 05-1\" ><\/div><\/div><\/figure><\/a><!--end av-masonry entry--><\/div><\/div><\/div><div  class='flex_column av-av_one_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_one_fifth  avia-builder-el-20  el_after_av_three_fifth  avia-builder-el-last  flex_column_div  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.avia_textblock{\ntext-align:center;\n}\n<\/style>\n<section  class='av_textblock_section av-av_textblock-191303a5a297a2be5faedcc0c0e16f41 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1>Related Highlights<\/h1>\n<\/div><\/section><\/div><div  class='flex_column av-av_one_fifth-2d22dc0500e159f2b39fe7a147caf14c av_one_fifth  avia-builder-el-24  el_after_av_one_full  el_before_av_three_fifth  first flex_column_div  column-top-margin'     ><\/div><div  class='flex_column av-av_three_fifth-3b0d446bf9e6f7db91541aa567be4cdf av_three_fifth  avia-builder-el-25  el_after_av_one_fifth  el_before_av_one_fifth  flex_column_div  column-top-margin'     ><div  id=\"avia-magazine-1\"  class='av-magazine av-av_magazine-e97233d63e2da7564ef1f32355184952  avia-builder-el-26  avia-builder-el-no-sibling   avia-builder-el-26  avia-builder-el-no-sibling ' ><div class='av-magazine-group sort_all'><article class='av-magazine-entry av-magazine-entry-id-62742 av-magazine-format-standard av-magazine-type-post av-magazine-entry-1 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www2.si.mahidol.ac.th\/en\/news-events\/siriraj-faculty-abroad-at-the-36th-american-glaucoma-society-aunnual-meeting-in-usa\/' title='Link to: Siriraj Faculty Abroad at the 36th American Glaucoma Society Aunnual Meeting  in USA' class='av-magazine-thumbnail-link'><img decoding=\"async\" fetchpriority=\"high\" width=\"80\" height=\"80\" src=\"https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/03\/Feature-80x80.jpg\" class=\"wp-image-62743 avia-img-lazy-loading-not-62743 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/03\/Feature-80x80.jpg 80w, https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/03\/Feature-36x36.jpg 36w, https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/03\/Feature-180x180.jpg 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\" aria-label=\"Post: Siriraj Faculty Abroad at the 36th American Glaucoma Society Aunnual Meeting  in USA\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2026-03-05T16:27:46+07:00\" >March 5, 2026<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www2.si.mahidol.ac.th\/en\/news-events\/siriraj-faculty-abroad-at-the-36th-american-glaucoma-society-aunnual-meeting-in-usa\/' title='Link to: Siriraj Faculty Abroad at the 36th American Glaucoma Society Aunnual Meeting  in USA'>Siriraj Faculty Abroad at the 36th American Glaucoma Society Aunnual Meeting  in USA<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><article class='av-magazine-entry av-magazine-entry-id-62460 av-magazine-format-standard av-magazine-type-post av-magazine-entry-2 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www2.si.mahidol.ac.th\/en\/news-events\/siriraj-faculty-abroad-at-ispor-europe-2025-in-uk\/' title='Link to: Siriraj Faculty Abroad at ISPOR Europe 2025 in UK' class='av-magazine-thumbnail-link'><img decoding=\"async\" fetchpriority=\"high\" width=\"80\" height=\"80\" src=\"https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/02\/Feature-1-80x80.jpg\" class=\"wp-image-62461 avia-img-lazy-loading-not-62461 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/02\/Feature-1-80x80.jpg 80w, https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/02\/Feature-1-36x36.jpg 36w, https:\/\/www2.si.mahidol.ac.th\/en\/wp-content\/uploads\/2026\/02\/Feature-1-180x180.jpg 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\" aria-label=\"Post: Siriraj Faculty Abroad at ISPOR Europe 2025 in UK\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2026-02-18T08:53:47+07:00\" >February 18, 2026<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www2.si.mahidol.ac.th\/en\/news-events\/siriraj-faculty-abroad-at-ispor-europe-2025-in-uk\/' title='Link to: Siriraj Faculty Abroad at ISPOR Europe 2025 in UK'>Siriraj Faculty Abroad at ISPOR Europe 2025 in UK<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><article class='av-magazine-entry av-magazine-entry-id-62485 av-magazine-format-standard 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