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加拿大fusinstruments 品牌RK-100磁共振成像影像導航的血腦屏障聚焦超聲系統(tǒng),RK-100磁共振引導的血腦屏障聚焦超聲系統(tǒng)

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  • 產(chǎn)品名稱:加拿大fusinstruments 品牌RK-100磁共振成像影像導航的血腦屏障聚焦超聲系統(tǒng),RK-100磁共振引導的血腦屏障聚焦超聲系統(tǒng)
  • 產(chǎn)品型號:RK-100
  • 產(chǎn)品展商:加拿大fusinstruments
  • 產(chǎn)品文檔:無相關文檔
簡單介紹

這一可兼容核磁共振成像的影像導航聚焦超聲系統(tǒng)由一套電腦控制的高精度三維定位系統(tǒng)和高能的聚焦超聲轉換器組成。定位系統(tǒng)能夠精準地向毫米大小的區(qū)域輸送聚焦超聲能量到軟組織。這一系統(tǒng)專門用于研究從小到大的動物模型,從而探究超聲-組織相互作用,在用于人體之前評價**方法的**性,可匹配臨床MR和CT掃描儀從而完成影像導航的**計劃和遞送。該系統(tǒng)完全無磁性,因而可以與高場核磁成像儀共同工作,還可匹配X射線CT成像。 設備暫時性開放血腦屏障的效果非常好, 不會長期破壞人體的血腦屏障,大約12小時后,血腦屏障即恢復完好,重新開始為大腦阻擋有害物質

產(chǎn)品描述
 

RK-100磁共振成像影像導航的血腦屏障聚焦超聲系統(tǒng)

這一可兼容核磁共振成像的影像導航聚焦超聲系統(tǒng)由一套電腦控制的高精度三維定位系統(tǒng)和高能的聚焦超聲轉換器組成。

定位系統(tǒng)能夠精準地向毫米大小的區(qū)域輸送聚焦超聲能量到軟組織。這一系統(tǒng)專門用于研究從小到大的動物模型,從而探究超聲-組織相互作用,在用于人體之前評價**方法的**性,可匹配臨床MRCT掃描儀從而完成影像導航的**計劃和遞送。該系統(tǒng)完全無磁性,因而可以與高場核磁成像儀共同工作,還可匹配X射線CT成像。

這一無磁性定位系統(tǒng)能夠在成像時沿著任意3D路徑調(diào)動轉換器;超聲劑量的遞送用通過MRI或者CT的影像實現(xiàn),具體依賴系統(tǒng)的配置;實時監(jiān)控前進方向,轉換器接收反射的電能從而保證一致的能量傳輸。

 

該系統(tǒng)能夠遞送從軟組織熱凝結的高能連續(xù)聲波降解,到適用于例如組織裂解、**傳輸或者血管透化等用途的脈沖聲波降解所需的劑量。因為該系統(tǒng)設計用于研究,所以非常靈活,用戶可以根據(jù)需要自由設置。

 

磁共振引導聚焦超聲助科學家突破血腦屏障

RK-100磁共振引導的血腦屏障聚焦超聲系統(tǒng)

背景:

血腦屏障是大腦的內(nèi)皮細胞,這些細胞形成的多層膜緊緊包裹住大腦中的所有血管,阻擋**、病毒和其他有害物質進入大腦。但是,血腦屏障對大多數(shù)**具有屏蔽作用。當醫(yī)生在**腦部腫瘤或神經(jīng)系統(tǒng)**時,只有約25%的**能夠進入大腦,這使得**變得異常困難。森尼布魯克保健中心利用磁共振引導聚焦超聲技術,在不進行開顱手術的情況下突破了人體的血腦屏障,從而使得有效**能夠順利進入腦部,達到**的效果。更加令人鼓舞的是,該技術并不會長期破壞人體的血腦屏障。大約12小時后,血腦屏障即恢復完好,重新開始為大腦阻擋有害物質。

   磁共振引導聚焦超聲設備突破了大腦的血腦屏障,從而能夠在不進行手術的情況下,提高多種腦部**的**水平,例如腦腫瘤、帕金森氏癥,和阿爾茨海默氏癥等。此舉對神經(jīng)科學領域意義重大。

原理與應用步驟:

研究人員首先為患腦癌患者注射一種化療**的微泡,微泡隨后擴散至向腦部血管中。接下來,患者配戴立體定位神經(jīng)系統(tǒng)的超聲波發(fā)射器,研究人員借助磁共振引導聚焦超聲設備精準發(fā)射高強度聚焦超聲束,從而引起微泡振動,迫使構成血腦屏障的內(nèi)皮細胞分開。血液中的化療**便可從間隙中穿過,到達腫瘤細胞附近

    運用磁共振引導聚焦超聲設備暫時性開放血腦屏障的效果非常好, 不會長期破壞人體的血腦屏障,大約12小時后,血腦屏障即恢復完好,重新開始為大腦阻擋有害物質。這一劃時代的突破將會為絕望的病人帶來新的希望.

 

應用文獻:

 

Studies using FUS Instruments’ Systems

Moyer, Linsey C., et al. “High-intensity focused ultrasound ablation enhancement in vivo via phase-shift nanodroplets compared to microbubbles.” Journal of Therapeutic Ultrasound 3.1 (2015): 7.

Ellens, N. P. K., et al. “The targeting accuracy of a preclinical MRI-guided focused ultrasound system.” Medical physics 42.1 (2015): 430-439.

Burgess, Alison, et al. “Alzheimer disease in a mouse model: MR imaging–guided focused ultrasound targeted to the hippocampus opens the blood-brain barrier and improves pathologic abnormalities and behavior.”Radiology 273.3 (2014): 736-745.

Diaz, Roberto Jose, et al. “Focused ultrasound delivery of Raman nanoparticles across the blood-brain barrier: Potential for targeting experimental brain tumors.” Nanomedicine: Nanotechnology, Biology and Medicine 10.5 (2014): 1075-1087.

Nance, Elizabeth, et al. “Non-invasive delivery of stealth, brain-penetrating nanoparticles across the blood? brain barrier using MRI-guided focused ultrasound.” Journal of Controlled Release 189 (2014): 123-132.

Oakden, Wendy, et al. “A non-surgical model of cervical spinal cord injury induced with focused ultrasound and microbubbles.” Journal of neuroscience methods 235 (2014): 92-100.
.
Phillips, Linsey C., et al. “Dual perfluorocarbon nanodroplets enhance high intensity focused ultrasound heating and extend therapeutic window in vivo.” The Journal of the Acoustical Society of America 134.5 (2013): 4049-4049.
.
Alkins, Ryan D., et al. “Enhancing drug delivery for boron neutron capture therapy of brain tumors with focused ultrasound.” Neuro-oncology (2013): not052.

Alkins, Ryan, et al. “Focused ultrasound delivers targeted immune cells to metastatic brain tumors.” Cancer research 73.6 (2013): 1892-1899.

Huang, Yuexi, Natalia I. Vykhodtseva, and Kullervo Hynynen. “Creating brain lesions with low-intensity focused ultrasound with microbubbles: a rat study at half a megahertz.” Ultrasound in medicine & biology 39.8 (2013): 1420-1428.

Jord?o, Jessica F., et al. “Amyloid-β plaque reduction, endogenous antibody delivery and glial activation by brain-targeted, transcranial focused ultrasound.” Experimental neurology 248 (2013): 16-29.

Scarcelli, Tiffany, et al. “Stimulation of hippocampal neurogenesis by transcranial focused ultrasound and microbubbles in ***** mice.” Brain stimulation 7.2 (2013): 304-307.

Etame, Arnold B., et al. “Enhanced delivery of gold nanoparticles with therapeutic potential into the brain using MRI-guided focused ultrasound.” Nanomedicine: Nanotechnology, Biology and Medicine 8.7 (2012): 1133-1142.

 

Thévenot, Emmanuel, et al. “Targeted delivery of self-complementary adeno-associated virus serotype 9 to the brain, using magnetic resonance imaging-guided focused ultrasound.” Human gene therapy 23.11 (2012): 1144-1155.

 

Staruch, Robert, Rajiv Chopra, and Kullervo Hynynen. “Hyperthermia in Bone Generated with MR Imaging–controlled Focused Ultrasound: Control Strategies and Drug Delivery.” Radiology 263.1 (2012): 117-127.

 

Burgess, Alison, et al. “Targeted delivery of neural stem cells to the brain using MRI-guided focused ultrasound to disrupt the blood-brain barrier.” PLoS One 6.11 (2011): e27877.

 

Jord?o, Jessica F., et al. “Antibodies targeted to the brain with image-guided focused ultrasound reduces amyloid-β plaque load in the TgCRND8 mouse model of Alzheimer’s disease.” PloS one 5.5 (2010): e10549.

 


Blood-Brain Barrier Disruption Studies

Leinenga, Gerhard, and Jürgen G?tz. “Scanning ultrasound removes amyloid-β and restores memory in an Alzheimer’s disease mouse model.” Science translational medicine 7.278 (2015): 278ra33-278ra33.

 

Wang, S., et al. “Noninvasive, neuron-specific gene therapy can be facilitated by focused ultrasound and recombinant adeno-associated virus.” Gene Therapy 22.1 (2015): 104-110.

 

McDannold, Nathan, et al. “Temporary disruption of the blood–brain barrier by use of ultrasound and microbubbles: safety and efficacy evaluation in rhesus macaques.” Cancer research 72.14 (2012): 3652-3663.

 

Treat, Lisa H., et al. “Improved anti-tumor effect of liposomal doxorubicin after targeted blood-brain barrier disruption by MRI-guided focused ultrasound in rat glioma.” Ultrasound in medicine & biology 38.10 (2012): 1716-1725.
.

Kinoshita, Manabu, et al. “Noninvasive localized delivery of Herceptin to the mouse brain by MRI-guided focused ultrasound-induced blood–brain barrier disruption.” Proceedings of the National Academy of Sciences 103.31 (2006): 11719-11723.

 

Kinoshita, Manabu, et al. “Targeted delivery of antibodies through the blood–brain barrier by MRI-guided focused ultrasound.” Biochemical and biophysical research communications 340.4 (2006): 1085-1090.
.


Relevant Review Papers

Burgess, Alison, and Kullervo Hynynen. “Drug delivery across the blood-brain barrier using focused ultrasound.”Expert opinion on drug delivery 11.5 (2014): 711-721.

 

O’Reilly, Meaghan A., and Kullervo Hynynen. “Ultrasound enhanced drug delivery to the brain and central nervous system.” International Journal of Hyperthermia 28.4 (2012): 386-396.

 

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