{"id":79,"date":"2016-05-30T19:19:36","date_gmt":"2016-05-30T19:19:36","guid":{"rendered":"https:\/\/isoray.com\/?page_id=79"},"modified":"2023-03-10T09:07:32","modified_gmt":"2023-03-10T14:07:32","slug":"brain","status":"publish","type":"page","link":"https:\/\/isoray.flywheelstaging.com\/patients-families\/treatment\/brain\/","title":{"rendered":"Cesium-131 for Brain Tumors"},"content":{"rendered":"

[et_pb_section fb_built=”1″ fullwidth=”on” custom_padding_last_edited=”on|desktop” disabled_on=”on|on|on” _builder_version=”4.8.1″ custom_padding_tablet=”50px|0|50px|0″ custom_padding_phone=”” transparent_background=”off” padding_mobile=”off” disabled=”on”][et_pb_fullwidth_header title=”Brain” subhead=”A novel approach for radiation delivery.” _builder_version=”3.16″ title_font=”|on|||” title_font_size=”40px” background_color=”#74bf43″ button_one_text_size__hover_enabled=”off” button_two_text_size__hover_enabled=”off” button_one_text_color__hover_enabled=”off” button_two_text_color__hover_enabled=”off” button_one_border_width__hover_enabled=”off” button_two_border_width__hover_enabled=”off” button_one_border_color__hover_enabled=”off” button_two_border_color__hover_enabled=”off” button_one_border_radius__hover_enabled=”off” button_two_border_radius__hover_enabled=”off” button_one_letter_spacing__hover_enabled=”off” button_two_letter_spacing__hover_enabled=”off” button_one_bg_color__hover_enabled=”off” button_two_bg_color__hover_enabled=”off”][\/et_pb_fullwidth_header][\/et_pb_section][et_pb_section fb_built=”1″ fullwidth=”on” custom_padding_last_edited=”on|desktop” admin_label=”Curved-header-treatment” _builder_version=”4.8.1″ background_image=”https:\/\/isoray.flywheelstaging.com\/wp-content\/uploads\/2023\/02\/hdr-mid-02-treatments-brain-v001-feb23.jpg” background_position=”center_right” min_height=”450px” custom_padding_tablet=”50px|0|50px|0″ custom_padding_phone=”” top_divider_color=”#FFFFFF” bottom_divider_style=”curve” bottom_divider_color=”#f2f2f2″ transparent_background=”off” padding_mobile=”off”][et_pb_fullwidth_header title=”Using Cesium-131
for Brain cancer” subhead=”A novel approach for radiation delivery.” logo_image_url=”https:\/\/isoray.flywheelstaging.com\/wp-content\/uploads\/2023\/02\/cesium-131-with-strapline.png” content_max_width=”60%” admin_label=”Fullwidth Header” _builder_version=”4.8.1″ title_font=”|on|||” title_text_color=”#38454E” title_font_size=”40px” content_font_size=”25px” subhead_text_color=”#38454E” subhead_font_size=”24px” subhead_line_height=”1.1em” background_color=”RGBA(0,0,0,0)” custom_css_logo=”width: 50%;” button_one_text_size__hover_enabled=”off” button_two_text_size__hover_enabled=”off” button_one_text_color__hover_enabled=”off” button_two_text_color__hover_enabled=”off” button_one_border_width__hover_enabled=”off” button_two_border_width__hover_enabled=”off” button_one_border_color__hover_enabled=”off” button_two_border_color__hover_enabled=”off” button_one_border_radius__hover_enabled=”off” button_two_border_radius__hover_enabled=”off” button_one_letter_spacing__hover_enabled=”off” button_two_letter_spacing__hover_enabled=”off” button_one_bg_color__hover_enabled=”off” button_two_bg_color__hover_enabled=”off”][\/et_pb_fullwidth_header][\/et_pb_section][et_pb_section fb_built=”1″ specialty=”on” custom_padding_last_edited=”on|desktop” _builder_version=”4.8.1″ background_color=”#f2f2f2″ custom_padding_tablet=”50px|0|50px|0″ custom_padding_phone=”” transparent_background=”off” padding_mobile=”off”][et_pb_column type=”2_3″ specialty_columns=”2″ _builder_version=”3.25″ custom_padding=”|||” custom_padding__hover=”|||”][et_pb_row_inner padding_mobile=”off” column_padding_mobile=”off” _builder_version=”3.25″][et_pb_column_inner saved_specialty_column_type=”2_3″ _builder_version=”3.25″ custom_padding=”|||” custom_padding__hover=”|||”][et_pb_text admin_label=”About” _builder_version=”4.8.1″ header_2_font_size=”30px” header_2_line_height=”1.2em” background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off”]<\/p>\n

Cesium-131 Provides an Efficient Alternative for Recurrent Brain Tumors<\/h2>\n

Cesium-131 is part of an emerging treatment trend for high-functioning patients with symptomatic brain metastases.\u00a0 Cesium-131 can also provide patients with recurrent disease an additional treatment option when previous treatments may have approached radiation dose limits to the body.<\/p>\n

The combination of interstitial radiation to the tumor bed at the time of resection delivers efficient targeting of the radiation to the tumor bed, while limiting dose to surrounding eloquent structures.\u00a0 The Cesium-131 radiation treats the tumor bed directly, with sources that are implanted at the time of surgery. Use of the implant at the time of surgery provides the patient with a complete treatment in a single treatment regimen.<\/p>\n

The combination surgery and Cesium-131 treatment is delivered by a multi-disciplinary team that includes surgeons, radiation specialists and a physics team to support the proper radiation dosing and delivery.<\/p>\n

[\/et_pb_text][et_pb_divider color=”#d8d8d8″ divider_weight=”1px” _builder_version=”3.2″ custom_css_main_element=”padding-bottom: 25px;||padding-top: 25px;” hide_on_mobile=”off”][\/et_pb_divider][et_pb_image src=”https:\/\/isoray.flywheelstaging.com\/wp-content\/uploads\/2023\/03\/brain-video-pic.webp” alt=”Placing Cesium-131 Seeds in Patients with Brain Metastases Following Resection” title_text=”Placing Cesium-131 Seeds in Patients with Brain Metastases Following Resection – View on YouTube” url=”https:\/\/youtu.be\/NcN4glak73A” url_new_window=”on” use_overlay=”on” overlay_icon_color=”#25C0D9″ hover_overlay_color=”rgba(255,255,255,0.3)” hover_icon=”%%40%%” align=”center” force_fullwidth=”on” disabled_on=”on|on|on” _builder_version=”4.8.1″ _module_preset=”default” disabled=”on”][\/et_pb_image][et_pb_video src=”https:\/\/vimeo.com\/804237224#t=2″ _builder_version=”4.8.1″ _module_preset=”default”][\/et_pb_video][et_pb_text _builder_version=”4.8.1″ _module_preset=”default”]<\/p>\n

Placing Cesium-131 Seeds in Patients with Brain Metastases Following Resection<\/strong><\/p>\n

How to place brachytherapy seeds following surgical resection. With Theodore Schwartz, MD, FACS
Neurological Surgeon, New York Presbyterian Hospital
Professor of Neurological Surgery, Weill Cornell Medical College<\/p>\n

Watch Now on YouTube: https:\/\/youtu.be\/NcN4glak73A<\/strong><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”3.25″ custom_padding=”|||” custom_padding__hover=”|||”][et_pb_sidebar orientation=”right” area=”et_pb_widget_area_1″ _builder_version=”3.0.74″][\/et_pb_sidebar][et_pb_divider color=”#d8d8d8″ divider_weight=”1px” disabled_on=”on|on|off” _builder_version=”3.2″ custom_css_main_element=”padding-bottom: 25px;” hide_on_mobile=”on”][\/et_pb_divider][et_pb_cta title=”Do you have questions?” button_url=”https:\/\/isoray.flywheelstaging.com\/contact-isoray\/” button_text=”Contact Us” _builder_version=”3.16″ header_line_height=”1.2em” use_background_color=”off” background_size=”initial” background_position=”top_left” background_repeat=”repeat” custom_button=”on” button_text_size=”12″ text_orientation=”left” background_layout=”light” use_border_color=”off” border_color=”#ffffff” border_width=”1px” border_style=”solid” button_text_size__hover_enabled=”off” button_one_text_size__hover_enabled=”off” button_two_text_size__hover_enabled=”off” button_text_color__hover_enabled=”off” button_one_text_color__hover_enabled=”off” button_two_text_color__hover_enabled=”off” button_border_width__hover_enabled=”off” button_one_border_width__hover_enabled=”off” button_two_border_width__hover_enabled=”off” button_border_color__hover_enabled=”off” button_one_border_color__hover_enabled=”off” button_two_border_color__hover_enabled=”off” button_border_radius__hover_enabled=”off” button_one_border_radius__hover_enabled=”off” button_two_border_radius__hover_enabled=”off” button_letter_spacing__hover_enabled=”off” button_one_letter_spacing__hover_enabled=”off” button_two_letter_spacing__hover_enabled=”off” button_bg_color__hover_enabled=”off” button_one_bg_color__hover_enabled=”off” button_two_bg_color__hover_enabled=”off”]We have answers.
\n[\/et_pb_cta][\/et_pb_column][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.8.1″ _module_preset=”default” background_color=”#f2f2f2″][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.8.1″ _module_preset=”default”][et_pb_column type=”1_2″ _builder_version=”4.8.1″ _module_preset=”default”][et_pb_image src=”https:\/\/isoray.flywheelstaging.com\/wp-content\/uploads\/2023\/03\/brain-video-pic2.jpg” title_text=”brain-video-pic2″ url=”https:\/\/youtu.be\/4ZWJr9bP1EE” url_new_window=”on” use_overlay=”on” hover_overlay_color=”rgba(255,255,255,0.3)” hover_icon=”%%40%%” align=”center” force_fullwidth=”on” disabled_on=”on|on|on” admin_label=”Image” _builder_version=”4.8.1″ _module_preset=”default” disabled=”on”][\/et_pb_image][et_pb_video src=”https:\/\/vimeo.com\/804255136″ _builder_version=”4.8.1″ _module_preset=”default”][\/et_pb_video][et_pb_text _builder_version=”4.8.1″ _module_preset=”default”]<\/p>\n

Cesium-131 for Brain Cancer<\/strong><\/p>\n

Results from a Phase I\/II study of resection and intraoperative cesium-131 radioisotope brachytherapy in patients with newly diagnosed brain metastases. Featuring A. Gabriella Wernicke, MD, M.Sc
Associate Professor of Radiation Oncology
Weill Cornell Medical College
New York Presbyterian Hospital<\/p>\n

Watch Now on YouTube: https:\/\/youtu.be\/4ZWJr9bP1EE<\/a><\/strong><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.8.1″ _module_preset=”default”][et_pb_image src=”https:\/\/isoray.flywheelstaging.com\/wp-content\/uploads\/2023\/03\/brain-video-pic3.jpeg” alt=”Cesium-131 Brachytherapy Seed Placement: Surgical Technique” title_text=”Cesium-131 Brachytherapy Seed Placement: Surgical Technique” url=”https:\/\/youtu.be\/ATWk6h44oeo” url_new_window=”on” use_overlay=”on” overlay_icon_color=”#25C0D9″ hover_overlay_color=”rgba(255,255,255,0.3)” hover_icon=”%%40%%” align=”center” force_fullwidth=”on” admin_label=”Image” _builder_version=”4.8.1″ _module_preset=”default” hover_enabled=”0″ disabled_on=”on|on|on” disabled=”on” sticky_enabled=”0″][\/et_pb_image][et_pb_video src=”https:\/\/vimeo.com\/806758709#t=0″ _builder_version=”4.8.1″ _module_preset=”default” hover_enabled=”0″ sticky_enabled=”0″][\/et_pb_video][et_pb_text _builder_version=”4.8.1″ _module_preset=”default”]<\/p>\n

Cesium-131 Brachytherapy Seed Placement: Surgical Technique<\/strong><\/p>\n

How to perform Cesium-131 brachytherapy in patients with newly diagnosed brain metastases following surgical resection. Featuring A. Gabriella Wernicke, MD, M.Sc and Theodore Schwartz, MD, FACS
Weill Cornell Medical College
New York Presbyterian Hospital<\/p>\n

Watch Now on YouTube: https:\/\/youtu.be\/ATWk6h44oeo<\/a><\/strong><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.8.1″ _module_preset=”default”][et_pb_column type=”4_4″ _builder_version=”4.8.1″ _module_preset=”default”][et_pb_video src=”https:\/\/youtu.be\/WOD0na2XCJw” _builder_version=”4.8.1″ _module_preset=”default”][\/et_pb_video][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.8.1″ _module_preset=”default” background_color=”#25C0D9″][et_pb_row _builder_version=”4.8.1″ _module_preset=”default”][et_pb_column type=”4_4″ _builder_version=”4.8.1″ _module_preset=”default”][et_pb_text admin_label=”Quotes” _builder_version=”4.8.1″ text_font=”|700|||||||” text_text_color=”#FFFFFF” text_font_size=”20px” background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off” border_style=”solid”]<\/p>\n

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\u201cThe results of our study suggest that surgical resection with intra-operative Cs-131 brachytherapy is able to stabilize or improve neurocognitive function (NCF) for patients with metastatic brain tumors by improving control of brain tumors and avoiding the toxicity of WBRT.\u00a0 Furthermore, QoL can be preserved or improved after treatment in the short-term\u201d [1]<\/p>\n<\/blockquote>\n

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\u201cPatients exhibited significantly less cavity shrinkage than SRS patients during the first critical month in 88% Cs-131 dose delivery.\u00a0 This significant difference in shrinkage suggests that the intracavity seeds on a string technique facilitates increased cavity stability, promoting more homogeneous dose delivery” [2]<\/p>\n<\/blockquote>\n

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\u201cRetrospective reports suggest local control rates of 80% to 90% and avoidance of WBRT in most cases that are appropriately selected and planned<\/span><\/span>\u201d[3<\/span><\/span>]<\/span><\/span><\/p>\n<\/blockquote>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.8.1″ _module_preset=”default”][et_pb_row _builder_version=”4.8.1″ _module_preset=”default”][et_pb_column type=”4_4″ _builder_version=”4.8.1″ _module_preset=”default”][et_pb_text admin_label=”Competitive Experience” _builder_version=”4.8.1″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off” border_style=”solid”]<\/p>\n

Cesium-131 delivers a highly effective <\/span><\/span>radiation <\/span><\/span>dose to the tumor bed.<\/span><\/span><\/h2>\n

The use of Cesium-131 can provide a superior Biological Equivalent Dose (BED) in comparison to other isotopes when treating rapidly dividing cancer cells.\u00a0 A recent paper by Armpilia, et al, showed the cell response, based on cell division rates (noted as \u201cK\u201d in the table).\u00a0 The work suggested that Cesium-131 delivers a high BED to the fastest growing cancers but has a much lower energy level of 30.4 KeV, which distinguishes it from other isotopes.<\/p>\n

As you move thru the data to the right the cancers represented by the top line (\u201cK\u201d) multiply faster and faster. On the first line under \u201cRadionuclide\u201d you will see that the highest BED is from Gold however, the high energy level of 400 KeV significantly increases the risk of exposure to the operative surgeon and OR staff.<\/p>\n

“The results of our study suggest that surgical resection with intra-operative Cs-131 brachytherapy is able to stabilize or improve neurocognitive function (NCF) for patients with metastatic brain tumors by improving control of brain tumors and avoiding the toxicity of WBRT.\u202f Furthermore, QoL can be preserved or improved after treatment in the short-term.\u201d [1]<\/p>\n

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Furthermore, QoL can be preserved or improved after treatment in the short-term.\u201d [1]”<\/strong><\/p>\n<\/blockquote>\n

\u201cPatients exhibited significantly less cavity shrinkage than SRS patients during the first critical month in 88% Cs-131 dose delivery.\u202f This significant difference in shrinkage suggests that the intracavity seeds on a string technique facilitates increased cavity stability, promoting more homogeneous dose delivery.\u201d [2]<\/p>\n

\u201cRetrospective reports suggest local control rates of 80% to 90% and avoidance of WBRT in most cases that are appropriately selected and planned.\u201d[2]<\/p>\n

\"isoray_braintreatment3\"<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”3.27.4″ text_font_size=”14px” background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off” border_style=”solid”]<\/p>\n

Armpilla C, Dale R, Coles I, et al.\u00a0The determination of radiobiologically optimized half-lives for radionuclides used in permanent brachytherapy implants.<\/a>\u00a0Int J Rad Onc Biol Phys<\/em>\u00a02003; 55:378-385.<\/p>\n

[\/et_pb_text][et_pb_divider color=”#d8d8d8″ divider_weight=”1px” _builder_version=”3.2″ custom_css_main_element=”padding-bottom: 25px;||padding-top: 25px;” hide_on_mobile=”off”][\/et_pb_divider][et_pb_text admin_label=”History” _builder_version=”3.27.4″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off” border_style=”solid”]<\/p>\n

History<\/b><\/h2>\n

Intra-cranial brachytherapy has been used in the treatment of brain tumors for decades. Early attempts involved the placement of high dose rate (HDR) implants temporarily in the brain for dose delivery. More recently, iodine-125 (I-125) permanent implants have been employed, with the University of California, San Francisco (UCSF) reporting a significant number of cases (McDermott 1998).<\/p>\n

Brachytherapy has special appeal as a brain cancer treatment due to the significant side effects that may occur when uninvolved brain tissue is irradiated to high doses. Brachytherapy offers a highly conformal dose (4) and is typically placed at craniotomy following resection of the tumor. Sources are typically positioned close to the surgical margin to account for any residual cancer cells. Radical resections of\u00a0the brain are not usually undertaken, so adjuvant radiation is often desirable therapeutically.<\/p>\n

While control rates for I-125 following the procedure have been reported to be satisfactory, the occurrence of radiation necrosis of brain parenchyma has been observed. This necrosis is an unintended side effect of the brachytherapy implant, and has contributed to slow wide adoption of I-125 for brain brachytherapy. A review by McDermott (1) reports a range of 26 to 57% rate of radiation necrosis. These necrotic lesions often require a second craniotomy to resolve. Whether necrosis signals a positive therapeutic event in terms of cancer control is debatable, but still discussed.<\/p>\n

While long considered an attractive isotope for brain brachytherapy, due to its short half-life (9.7 days) and energy (30 keV) the radioisotope Cs-131 only became available as a brachytherapy source in 2005.<\/p>\n

Two groups \u2013 Cornell Medical College, NYC and Barrow Neurological Institute, Phoenix \u2013 independently began treatment of brain cancers with Cesium-131 brachytherapy placed at tumor resection. The results have been impressive, with rates of local control greater than 90% and rates of radiation necrosis less than 5%. These observations have led to the design of large trials intended to further study the outcomes of this treatment and standardize implant technique.<\/p>\n

The Cornell series report a 100% rate of local control (J Neurosurg 2014) with no observed radiation necrosis. A separate paper (J Neurooncol 2016) reported a quick recovery of cognitive function after implant. A third paper (Operative Neurosurgery 2016) details the procedure itself. It is thought that the low rate of complications is related to the stabilization of the resection cavity with fibrin glue; combined with the short half-life of Cesium-131 \u2013 where 90% of dose is delivered in 30 days \u2014 there is no\u00a0extended irradiation of tissue outside of the intended field. Iodine-125 implants (90% of dose delivered in 180 days) may tend to irradiate normal brain tissue as the resection cavity collapses.<\/p>\n

The initial Barrow series was presented in June at the Society of Neuro-Oncology Conference on Meningioma, Toronto, Canada. The initial presentation demonstrated 95% of the treated tumors (19 of 20) had no radiographic evidence of regrowth of tumor at the operative site (local control). The incidence of radiation side effects to the brain \u2013 a problem in previous attempts to perform brain brachytherapy \u2013 occurred in only two of the 20 treatments.<\/p>\n

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A diagnosis is just the first step toward treating\u00a0your cancer. We are here to help you make an informed\u00a0<\/em>treatment\u00a0decision with your doctor so you can begin living your life again.\u00a0<\/span><\/p>\n

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