CIRS 008M MRI動態(tài)模體，CIRS 008M模體
圖像采集，治療計劃，劑量輸送


CIRS MRI-LINAC Dynamic Phantom專為端到端調(diào)試，混合MRI-LINAC放射治療系統(tǒng)的機器QA以及門控和適應性治療計劃的驗證而設計。

CIRS 008M MRI動態(tài)模體，CIRS 008M模體型提供了評估MRI圖像質(zhì)量的手段，并且可以測試腫瘤定位和動作捕捉設備。幻影可用于獲取移動或靜態(tài)目標圖像進行門控或適應性治療實施的治療計劃和驗證。

CIRS 008M MRI動態(tài)模體，CIRS 008M模體帶有目標和延伸的剛性軸連接的模體，移動桿對于1.5T磁體是MRI安全的。電機和運動控制器電子元件位于離磁鐵安全距離處，以確保MRI圖像質(zhì)量。MRI-LINAC Dynamic Phantom利用CIRS運動控制軟件提供精確，可重復的3D目標運動。

幻影體在大小和形狀上逼近平均人體。它由帶有圓柱形通孔的塑料外殼組成，以容納具有模擬目標的移動桿。外殼內(nèi)充滿專有的MRI信號生成凝膠，可以快速輕松地進行幻像設置，而不會產(chǎn)生液體運動偽影?；糜败嚿響覓煸诜谴跑壣?，可以進行線圈定位和虛擬注冊到沙發(fā)上。





CIRS 008M MRI動態(tài)模體，CIRS 008M模體含有MRI質(zhì)量保證目標，與ACR認證計劃的建議相符：

MRI圖像空間失真
MRI場均勻性
激光到ISO中心重合
帶有模擬目標的活動插件是一個密封的圓柱形桿，其填充了與幻像體相同的MRI信號生成專用凝膠。嵌入式MRI / CT靶由MRI凝膠制成，可提供與背景相對的對比度。該目標可以接收離子室或其他MRI兼容劑量計用于治療劑量驗證。在MRI殼體的外側(cè)上為MRI / CT目標和MRI失真柵格加工出激光標記。為了促進MRI / CT圖像融合，存在與外部激光標記對準的中心基準點，并且在關于3D空間畸變網(wǎng)格的已知位置。

CIRS 008M MRI動態(tài)模體，CIRS 008M模體特征：
MRI-CT-LINAC兼容
3D目標運動
門控和自適應RT計劃驗證
端到端調(diào)試
MRI QA

Image Acquisition, Treatment Planning, Dose Delivery


The CIRS MRI-LINAC Dynamic Phantom is designed for end-to-end commissioning, machine QA for hybrid MRI-LINAC Radiation Therapy systems, and verification of gated and adaptive treatment plans.

The Model 008M provides a means to assess MRI image quality, and to test tumor localization and motion-capturing devices. The phantom can be used to acquire moving or static target images for treatment planning and verification of gated or adaptive treatment delivery.

The phantom body, moving rod with target and extended rigid shaft connection are MRI-safe with 1.5T magnets. Motors and motion controller electronics are located at a safe distance from the magnet to ensure MRI image quality. The MRI-LINAC Dynamic Phantom utilizes CIRS Motion Control Software to provide precise, repeatable 3D target motion.

The phantom body approximates an average human body in size and shape. It is comprised of a plastic shell with a cylindrical thru hole to accommodate a moving rod with simulated target. The shell is filled with proprietary MRI signal-generating gel that allows for quick and easy phantom set-up without liquid motion artifacts. The phantom body is suspended on non-magnetic rails that allow for coil positioning and phantom registration to the couch.

Model 008M contains MRI QA targets that are compatible with ACR accreditation program recommendations for:

MRI image spatial distortion
MRI field homogeneity
Laser to ISO center coincidence
The moving insert with simulated target is a sealed, cylindrical rod filled with the same MRI signal-generating proprietary gel as the phantom body. The embedded MRI/CT target is made of MRI gel that provides contrast with respect to the background. This target can receive an ion chamber or other MRI-compatible dosimeters for treatment dose verification. There are laser marks machined on the outside of MRI shell body for both the MRI/CT target and MRI Distortion Grid. To facilitate MRI/CT Image fusion, there is a central fiducial aligned with the exterior laser marks, and in a known position with respect to 3D spatial distortion grid.

Features:

MRI-CT-LINAC Compatible
3D target motion
Gated and adaptive RT plan verification
End-to-end commissioning
MRI QA