Method for preparing brain tissue and vascular entity composite model based on MRI (magnetic resonance imaging) and CTA (CT angiography)

Abstract

The invention discloses a method for preparing brain tissue and vascular entity composite model based on MRI (magnetic resonance imaging) and CTA (CT angiography). The method includes: 1), acquiring image data of head and neck skull, brain tissue, vessel and arterial aneurysm; 2), leading acquired MRI and CTA original image data into three-dimensional reconstruction software, structuring a 3D composite virtual model containing the skull, brain tissue, vessel and arterial aneurysm and outputting to a 3D printer for 3D model printing in a format that the 3D printer can print to acquire the three-dimensional entity composite model containing the skull, brain tissue, vessel and arterial aneurysm. The model is quite high in simulation degree, so that doctors can perform preoperative discussionof surgical planning, preoperative risk assessment and design of operative route or even simulate operation in combination with the model; the brain tissue model is of fluid silicone brain tissue thatcan be pulled apart and can be pulled apart as in actual operation, so that the doctors are more confident, and operation risks are lowered.

Description

technical field [0001] The invention belongs to the technical field of medical models, and in particular relates to a method for preparing a composite model of brain tissue and blood vessels based on MRI and CTA. Background technique [0002] MRI (Magnetic Resonance Imaging) is an imaging technique that uses the phenomenon of magnetic resonance to obtain electromagnetic signals from the human body and reconstruct images of the human body. MRI is to apply a radio frequency pulse of a certain frequency to the human body in a static magnetic field, so that the hydrogen protons in the human body are excited and magnetic resonance occurs. After the pulse is stopped, the protons generate MR signals during relaxation. MR signals are generated through processing processes such as receiving MR signals, spatial encoding, and image reconstruction. MRI has been widely used clinically, and MRI has great potential advantages in diagnosing diseases. The most commonly used nucleus for MR...

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Problems solved by technology

When performing craniotomy aneurysm clipping, the operator must be aware of the anatomical structure of the aneurysm and the relationship between the surrounding tissues. Although the operator can observe the three-dimensional cerebral angiography at the workstation before the operation, the arterial artery cannot be observed. The adjacent relationship between the tumor and the surrounding bone, cranial nerves, and brain tissue can only be referred to two-dimensional CTA pictures during the operation, which requires extremely high spatial imagination and memory of the surgeon. It has a great impact. T