CN104936653B - 一种多用途放射治疗系统 - Google Patents

一种多用途放射治疗系统 Download PDF

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CN104936653B
CN104936653B CN201380004392.2A CN201380004392A CN104936653B CN 104936653 B CN104936653 B CN 104936653B CN 201380004392 A CN201380004392 A CN 201380004392A CN 104936653 B CN104936653 B CN 104936653B
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刘海峰
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1077Beam delivery systems
    • A61N5/1081Rotating beam systems with a specific mechanical construction, e.g. gantries
    • AHUMAN NECESSITIES
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    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
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    • A61N5/103Treatment planning systems
    • A61N5/1039Treatment planning systems using functional images, e.g. PET or MRI
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1042X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1042X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
    • A61N5/1045X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head using a multi-leaf collimator, e.g. for intensity modulated radiation therapy or IMRT
    • A61N5/1047X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head using a multi-leaf collimator, e.g. for intensity modulated radiation therapy or IMRT with movement of the radiation head during application of radiation, e.g. for intensity modulated arc therapy or IMAT
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1077Beam delivery systems
    • A61N5/1081Rotating beam systems with a specific mechanical construction, e.g. gantries
    • A61N5/1082Rotating beam systems with a specific mechanical construction, e.g. gantries having multiple beam rotation axes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1077Beam delivery systems
    • A61N5/1084Beam delivery systems for delivering multiple intersecting beams at the same time, e.g. gamma knives

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Abstract

一种多用途放疗系统,包括:底座、运动床、滚筒以及治疗头。所述运动床和滚筒设置在底座上,治疗头安装在滚筒上。治疗头包括多源聚焦治疗头和适形调强治疗头。所述多源聚焦治疗头与适形调强治疗头分布在滚筒轴心两侧,并通过圆弧导轨与滚筒相连。该多用途放疗系统实现了在同一台设备上进行立体定向多源聚焦治疗和适形调强治疗的目的。

Description

一种多用途放射治疗系统
技术领域
本发明涉及大型医疗设备技术领域,具体涉及的是一种多用途放射治疗系统。
背景技术
肿瘤是一种常见的多发病,而放射治疗是一种常见的治疗手段。在放射治疗过程中,一般有两种放疗方式,立体定向多源聚焦放疗方式以及适形调强放疗方式。所谓立体定向多源聚焦放疗方式,是将多束放射线聚焦于一个位置(即所谓靶区),从而可以实现对该靶区进行大剂量照射。采用该种多源聚焦放疗方式,可以对肿瘤组织进行高剂量照射,而周边组织受到的辐射损伤较小。该种多源聚焦放疗方式,其精准的治疗特性对于颅内肿瘤或者头颈部肿瘤具有很好的治疗效果,但当遇到形状复杂或较大的体部肿瘤时,上述多源聚焦放疗方式就有其局限性,而需要采用适形刀放疗方式,所谓适形刀放疗方式,采用了单一的放射源,经适形处理,使得放射剂量区的分布形状与肿瘤的形状在三维方向上一致或相近,避免或减小对正常组织的照射,且剂量区的放射剂量分布均匀。
目前,尚没有一种放疗设备能将立体定向多源聚焦放疗方式与适形调强放疗方式集成为一体,换句话说,目前的放疗设备无法在一台设备上既可以实现多源聚焦精确治疗又可以实现适形治疗,对于病患来说,也无法实现不同或相同肿瘤在同一台设备上选择不同的治疗方式。
发明内容
本发明提供一种集成了立体定向多源聚焦放疗与适形放疗的医疗设备,可以实现在一台放疗设备上既实现精确聚焦治疗又实现适形调强治疗。
本发明实施例提供了一种多用途放疗系统,包括底座、运动床、滚筒以及治疗头,所述运动床、滚筒设置在底座上,治疗头安装在滚筒上,所述治疗头包括多源聚焦治疗头以及适形调强治疗头,所述多源聚焦治疗头与适形调强治疗头分布在滚筒轴心两侧,且通过圆弧导轨与滚筒相连。
较较优的,所述多源聚焦治疗头以及适形调强治疗头,其相互间到轴心的夹角在30度到180度之间连续可调。
优的,所述多源聚焦治疗头以及适形调强治疗头分别在滚筒轴向平面上绕焦点进行摆动,所述摆动角度为0~±47.5度范围。
较优的,所述滚筒可绕其轴心360度连续或往复旋转,带动与所述滚筒相连的多源聚焦治疗头和适形调强治疗头绕滚筒轴心360度连续或往复旋转。
较优的,所述多源聚焦治疗头与适形调强治疗头的治疗入射角超过2π。
较优的,还包括动态影像引导系统,所述动态影像引导系统在滚筒上通过焦点安装一组或成固定角度的两组立体影像装置。
较优的,所述立体影像装置中的两组成像装置的夹角范围在20度到160度之间。
较优的,所述多源聚焦治疗头包括多颗放射源、预准直器以及移动准直器,所述放射源射线通过预准直器以及移动准直器聚焦于一点,形成聚焦野。
较优的,所述移动准直器设置了不同孔径,通过移动准直器的移动使得孔径可以切换用以改变聚焦野的尺寸和形状。
较优的,所述适形调强治疗头包括放射源、预准直器以及多叶准直器。
较优的,所述适形调强治疗的放射源可以是单颗钴源或大于4MV-X射线发生器。
采用本发明实施例的集成立体定向多源聚焦治疗与适形调强治疗的放疗系统,使放疗设备既能实现精确的聚焦治疗,也可以实现适形调强放射治疗。
附图说明
图1是本发明实施例提供的多用途放疗系统示意图;
图2是本发明实施例提供的多用途放疗系统侧视图;
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
为了更好得理解本发明的技术方案,申请人通过图1及图2的具体实施方式来说明该发明实施例的多用途放射治疗系统。图1是本发明实施例提供的集成了立体定向多源聚焦放疗与适形调强放疗的放疗系统示意图。如图1所示,所述放疗系统包括底座、滚筒、治疗头以及治疗床。所述底座是整个放疗系统的基础,起到承载整个放疗系统及固定作用。底座上设置有治疗床,所述治疗床通过螺钉、销钉与底座连接。所述治疗床则用于承载及固定病人,可以精确实现将病人的病症送到放疗系统指定位置。底座上还设置有滚筒,所述滚筒通过滚动支撑与底座相连,通过齿轮传动来实现滚筒绕着轴线旋转。
在本放疗系统中还包括其核心部件,即治疗头。在本发明实施例中包括两种治疗头,即聚焦治疗头以及适形调强治疗头。所述聚焦治疗头可以进行SRS(StereotaxicRadiosurgery立体定向放射手术治疗),或者是IGRT(Imaging Guide Radiation Therapy图像引导放射治疗)。所述适形调强治疗头可以进行3D-CRT(三维适形放射治疗),或者是IMRT(Intensity Modulated Radiation Therapy适形调强放射治疗),或者是SBRT(Stereotactic Body Radiation Therapy立体定向体部放射治疗),或者是IGRT(ImagingGuide Radiation Therapy图像引导放射治疗)。
所述两种治疗头分布在滚筒轴心两侧,因滚筒绕着轴线(回转中心)旋转,而带动治疗头绕着滚筒轴线(回转中心)进行360度连续或往复旋转治疗。此外,两种治疗头在滚筒轴向上通过圆弧导轨均与滚筒相连,这样可以使治疗头绕在滚筒轴向平面上绕焦点进行连续摆动,所述摆动角度为0~±47.5度范围,从而实现非共面、不同入射角的聚焦或适形治疗,从而可以更加灵活有效地进行肿瘤治疗。此外两种治疗头,在布局位置上,其相互间到轴心的夹角在30度到180度之间连续可调。由于治疗头可以做到连续的最大±47.5度入射角改变及360度绕等中心旋转,使得该系统的治疗入射角可以超过2π。
所述聚焦治疗头还包括多颗放射源、移动准直器以及预准直器。在本发明实施例中,所述放射源采用的是钴-60,而钴-60产生的伽玛放射射线通过预准直器以及移动准直器聚焦于一点,形成聚焦野也即治疗用的高剂量区。而所述移动准直器上设置了不同孔径,通过移动准直器的移动使得孔径可以切换用以改变聚焦野的尺寸和形状。通过该聚焦治疗头可以实现小射野尺寸、高剂量的精确治疗。
所述适形调强治疗头,包括放射源、预准直器以及多叶准直器。在本发明实施例中,所述放射源可以是单颗钴源或大于4MV-X射线发生器。所述放射源通过多叶准直器来实现治疗平面上不同的射野形状,从而实现三维适形调强照射。所述多叶准直器为现有技术,在本发明实施例中不再赘述。
此外,该本发明放疗系统还包括动态影像引导系统IGS,在旋转滚筒上通过焦点安装一组或成固定角度的两组立体影像装置(即X光发生器和影像探测采集系统)。即在滚筒上,安装一组或两组X光影像装置,来进行实时的患者体位、病灶空间位置的检测,利用检测结果对治疗床和治疗头进行空间位置补偿,从而保证治疗过程中的高精度定位,实现精确放疗。当采用两组X光成像装置时,两组成像装置的夹角范围在20度到160度之间。
在本发明实施例中,通过将多源聚焦治疗头以及适形调强治疗头集成在一个放疗系统中,对某些特定的需要多源聚焦和适形调强两类方式同时或分别进行治疗的肿瘤病灶,具有较大的优势。该放疗系统可以通过一次摆位,用适形调强治疗头与多源聚焦治疗头同时或分别进行照射治疗,实现两种组合式的放射治疗,减少了多次摆位造成的误差,提高放疗精准度和速度,从而提高了质量和效率。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。

Claims (11)

1.一种多用途放疗系统,包括底座、运动床、滚筒以及治疗头,所述运动床、滚筒设置在底座上,治疗头安装在滚筒上,其特征在于:
所述治疗头包括多源聚焦治疗头以及适形调强治疗头,所述适形调强治疗头至少包括多叶准直器,所述多源聚焦治疗头与适形调强治疗头分布在滚筒轴心两侧,且通过圆弧导轨与滚筒相连。
2.如权利要求1所述的多用途放疗系统,其特征在于,所述多源聚焦治疗头以及适形调强治疗头,其相互间到轴心的夹角在30度到180度之间连续可调。
3.如权利要求1所述的多用途放疗系统,其特征在于:所述多源聚焦治疗头以及适形调强治疗头分别在滚筒轴向平面上绕焦点进行摆动,所述摆动角度为0~±47.5度范围。
4.如权利要求1所述的多用途放疗系统,其特征在于,所述滚筒可绕滚筒轴心360度连续或往复旋转,带动与所述滚筒相连的多源聚焦治疗头和适形调强治疗头绕滚筒轴心360度连续或往复旋转。
5.如权利要求4所述的多用途放疗系统,其特征在于,所述多源聚焦治疗头与适形调强治疗头的治疗入射角超过2π。
6.如权利要求1所述的多用途放疗系统,其特征在于,还包括动态影像引导系统,所述动态影像引导系统在滚筒上通过焦点安装一组或成固定角度的两组立体影像装置。
7.如权利要求6所述的多用途放疗系统,其特征在于,所述立体影像装置中的两组成像装置的夹角范围在20度到160度之间。
8.如权利要求1所述的多用途放疗系统,其特征在于,所述多源聚焦治疗头包括多颗放射源、预准直器以及移动准直器,所述放射源射线通过预准直器以及移动准直器聚焦于一点,形成聚焦野。
9.如权利要求8所述的多用途放疗系统,其特征在于,所述移动准直器设置了不同孔径,通过移动准直器的移动使得孔径可以切换用以改变聚焦野的尺寸和形状。
10.如权利要求1所述的多用途放疗系统,其特征在于,所述适形调强治疗头还包括放射源、预准直器。
11.如权利要求10所述的多用途放疗系统,其特征在于,所述适形调强治疗头放射源可以是单颗钴源或大于4MV-X射线发生器。
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CN109621233A (zh) * 2019-01-02 2019-04-16 佳木斯大学 物理放射治疗设备搭接装置及使用方法
CN109998575A (zh) * 2018-12-29 2019-07-12 佛山瑞加图医疗科技有限公司 一种用于有限空间设备内的直线加速器等中心照射系统

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