Erbano Bruna Olandoski, Opolski Ana Cristina, Olandoski Marcia, Foggiatto José Aguiomar, Kubrusly Luiz Fernando, Dietz Ulrich Andreas, Zini Cassio, Marinho Melissa Mitsue Makita Arantes, Leal André Giacomelli, Ramina Ricardo
Acta Cir Bras. 2013 Nov;28(11):756-61. doi: 10.1590/s0102-86502013001100002.
To fabricate a three-dimensional biomodels of intracranial aneurysms, using rapid prototyping technology, to facilitate optimal anatomical visualization of aneurysms prior to and during surgery.
Four intracranial aneurysms cases were selected for this study. Using CT angiography images, the rapid prototyping process was completed using a PolyJet technology machine. The size and morphology of the prototypes were compared to brain digital subtraction arteriography of the same patients.
The biomodels reproduced the exact location and morphology of the intracranial aneurysms, particularly the necks, in life-size dimensions and exactly the same as measured by digital subtraction arteriography. The arterial segments adjacent to the aneurysm and arteries anatomically known by the surgeon were also shown, which could guide the surgeon to the aneurysmal segment. The models showed an average unit cost of US$ 130 and each one took an average of 20 hours to be fabricated.
It is possible to fabricate 3D physical biomodels of intracranial aneurysms from CT angiography images. These prototypes may be useful in the surgical planning for intracranial aneurysms to clarify the anatomy, define surgical techniques and facilitate the choice of suitable materials, such as clips and clip appliers.
利用快速成型技术制作颅内动脉瘤的三维生物模型，以利于在手术前及手术过程中对动脉瘤进行最佳的解剖可视化。
本研究选取了4例颅内动脉瘤病例。使用CT血管造影图像，通过PolyJet技术机器完成快速成型过程。将原型的大小和形态与同一患者的脑数字减影血管造影进行比较。
生物模型以实际大小再现了颅内动脉瘤的确切位置和形态，特别是瘤颈，与数字减影血管造影测量的完全相同。还展示了与动脉瘤相邻的动脉段以及外科医生熟知的解剖动脉，这可以引导外科医生找到动脉瘤段。模型显示平均单位成本为130美元，每个模型平均制作时间为20小时。
利用CT血管造影图像制作颅内动脉瘤的三维物理生物模型是可行的。这些原型可能有助于颅内动脉瘤的手术规划，以明确解剖结构、确定手术技术并便于选择合适的材料，如夹子和夹钳。
