Overview
Tissue equivalent materials are engineered composites that replicate the radiation interaction properties of human tissues, including muscle, fat, or bone. Developed primarily for medical and research applications, these materials enable precise calibration of imaging devices (e.g., CT, MRI) and radiotherapy equipment. Their composition often includes water-equivalent polymers, epoxy resins, or gel-based matrices with additives like calcium or titanium for bone equivalence. Standardized by organizations such as ICRU (International Commission on Radiation Units), these materials undergo rigorous testing to ensure consistent radiation attenuation coefficients across energy ranges. Commercial variants include A-150 (muscle equivalent), BR-12 (breast tissue), and lung/bone analogs for specialized dosimetry.
Physical and Chemical Properties
Tissue equivalent materials exhibit density and electron density values closely matching human tissues (e.g., 1.04 g/cm³ for muscle). Their radiation absorption characteristics are tuned using fillers like aluminum oxide or graphite. Most are thermoset plastics with high dimensional stability, resisting deformation under radiation exposure. Key metrics include mass attenuation coefficient (μ/ρ) and stopping power ratios, validated against ICRP reference data. Materials are typically non-hygroscopic to prevent property drift. For example, solid phantoms may use polymethyl methacrylate (PMMA) with mineral additives, while liquid equivalents employ glycerin-water mixtures.
Main Applications
In radiation therapy, these materials serve as phantoms for treatment planning system validation and beam calibration. They are mandatory for QA protocols in LINAC and proton therapy units. Diagnostic imaging uses them for CT number calibration and artifact testing. Research applications include space radiation studies (e.g., astronaut dosimetry) and nuclear safety testing. Industrial uses involve radiation shielding design. Custom formulations simulate pediatric or adipose tissues for specialized studies. Leading manufacturers provide ISO-compliant products with traceable dosimetric properties.
Safety and Storage
While generally non-toxic, some formulations contain trace heavy metals (e.g., lead for shielding applications). Standard PPE (gloves, goggles) is recommended when machining solid phantoms to avoid polymer dust inhalation. Storage requires protection from direct sunlight to prevent UV degradation of polymer matrices. Temperature stability is critical; gel-based materials may require refrigeration. Shelf life typically exceeds 5 years for sealed products. Disposal follows local regulations for composite materials.
B2B Procurement Guide
Buyers should prioritize vendors with ISO 13485 certification for medical-grade materials. Key specifications include ICRU compliance reports, uniformity certificates (±2% density tolerance), and radiation stability data. Bulk orders (100+ kg) commonly attract 10–15% discounts. For radiotherapy, verify compatibility with treatment energies (e.g., 6–18 MV photons). Custom shapes (e.g., anthropomorphic phantoms) incur 20–50% surcharges. Lead times range from 2 weeks (standard slabs) to 8 weeks (complex molds). Sample testing at accredited labs (e.g., AAPM-listed) is advisable for critical applications.
Related Manufacturers
- 主营：医学影像模体、光学定位系统、环境检测仪器、德国QRM组织等效材料、医学检测仪器
- 主营：德国QRM组织等效材料、医学影像模体、医学质量控制仪器、手术机器人光学定位系统
- 主营：储物箱、密封箱、水模体、手套箱、分辨率、静态箱、检测板、线对卡、虑线栅、调应急箱、检测体模、开口水箱、检测模体、测量空间、房检查水、固体水模、x射线机房、ct值检测水、气体演示箱、真空干燥箱、实验操作箱、干燥箱定做、空间分辨力、气体采样箱、动物试验箱
- 主营：机器人、血透机检测仪、光学跟踪系统、德国QRM组织等效材料、光学测量系统、光学定位系统、透析机分析仪、血透机分析仪、生命体征模拟器
- 主营：机器人、血透机检测仪、光学跟踪系统、通用多组织超声模体、光学测量系统、光学定位系统、透析机分析仪、血透机分析仪、生命体征模拟器、高斯计、流量计、X射线测试模体、牙科模体、腹部模体、骨密度模体、前臂模体、超声前列腺模体、脑电模拟器、脊椎骨模体、全身模体、头部模体、超声膜体、电刀分析仪、输液泵分析仪、腰椎模体
- 主营：消杀专用应急箱
- 主营：针式水听器、肺波形发生器、低氧发生器、组织等效模体、分辨率测试卡、超声功率计、电子密度模体、.腹部模体、全身模体、躯干模体、乳腺模体、头部模体、CT性能模体、核磁共振模体、辐射力天平、X射线分析仪、霍夫曼脑模体、骨密度模体、肺结节模体、多普勒血流模体、SPECT性能模体、等中心校准模体、女性盆腔模体、胎儿超声模体、温升体模、扩散成像模体
- 主营：亚克力手套箱、有机玻璃静态箱、亚克力实验箱、亚克力真空箱
- 主营：剂量仪、水听器、测试卡、电导率表、散射校正板、压力传感器、超声功率计、声压传感器、细胞外放大器、散射校正模体、3500差分放大器、1800交流放大器、2mw分辨率瓦特表、高压绝缘测试仪、低氧发生器
- 主营：辐射检测仪、射线检测仪、个人剂量报警仪、辐射仪、固定式辐射报警仪、在线辐射报警仪、区域辐射监测仪、表面污染检测仪、中子剂量率仪、X光机多功能质量检测、剂量面积乘积仪、KAP仪、线对卡、高分辨率测试卡、CT性能检测模体、低对比度检测模体、DSA检测模体、牙科模体、固体水、核磁共振模体、乳腺模体、CT剂量模体、射线报警仪、辐射报警仪、热释光剂量仪
- 主营：冲击吸收垂直变形测试、运动木地板测试、塑胶跑道检测设备、tga热重分析仪、燃烧试验仪、护目镜测试仪、环境试验箱、插头插座寿命开关、充电桩检测设备、冲击吸收、垂直变形、恒温恒湿箱、淋雨试验箱、头盔检测设备、盐酸氨气腐蚀试验箱、温升测试系统、电缆弯曲试验机、滑动摩擦系数测试仪、高海拔低气压试验箱、残余电压测试仪、电源负载柜、燃烧试验机、锁具寿命耐久试验机
- 主营：冲击吸收测试仪、塑胶跑道检测设备、垂直变形试验机、运动场地检测设备、球反弹测试仪、道路测试仪、电动自行车测试设备、头盔测试仪、超声模体、锁具测试设备、电源线弯曲试验机、剩余电压测试仪、无创血压模拟器、输液泵注射泵质量检测、高分辨率测试卡、插头插座检测设备、燃烧试验机、水平垂直燃烧试验机、无创血压模拟仪、漏电起痕试验仪、ct模体、淋雨试验装置、燃气软管拉伸试验机
- 主营：可移动风场模拟装置、测试风洞、冲击吸收、无创血压模拟器、门锁寿命、工业CT高分辨率测试、老化测试、盐酸氨气腐蚀试验箱、软管耐冷试验机、护目镜检测设备、门锁耐久、垂直变形测试仪、燃气软管试验机、头盔测试、燃烧试验机、医疗器械检测设备、UV-C低压汞灯老化、电动自行车检测设备、心电测试系统、输液泵注射泵质量检测、超声模体、安规综合测试仪、道路测试仪