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Chapter 2958 Error

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    There is no doubt that this surgical incision is more precise, and non-surgical conventional incisions are used.  It can be adjusted according to the patient's specific lesions, and precise positioning can be achieved depending on the individual.

    The whole operation process sounds wonderful, showing the wonder of modern medicine.

    The family members were happy to hear this.  Only doctors themselves know clearly that in order to achieve truly precise surgery, existing medical technology cannot achieve perfection.  Some technical difficulties cannot be fully overcome, and roadblocks always exist.

    "If 3D navigation were truly 100% accurate, even crazy bosses like Cao Yong would not envy the 3D computing brains of Junior Sister.

    Specifically, the biggest problem with three-dimensional navigation is that it is not a real-time image, which is far worse than the almost real-time contrast image of the interventional surgery introduced before.

    If you want to do real-time imaging, first of all, the operating room needs to have strong hardware. For example, the high-end hybrid operating room to be built in the new building of the National Association of Surgery, the operating room must be equipped with CT, so that patients can perform CT real-time imaging at any time.  Furthermore, a CT scan is much more expensive than an imaging scan.  During surgery, it is impossible to do CT for review as often as angiography.  Checking so many CT images at one time requires synthesis and image reading, which also consumes operation time.

    Without hardware support, all the hospital can do is work harder before surgery.

    The doctor initially planned the surgical approach based on his own medical experience, pasted positioning markers on the patient¡¯s scalp surface, and then asked the patient to do a second head CT scan.

    The secondary CT scan taken out is then input into the three-dimensional navigation system. At this time, scalp marker points will appear in the three-dimensional graphics.  Doctors use markers to overlap the real patient's head with the three-dimensional image head, forming a more accurate comparison operation reference map in the doctor's impression.

    In order to achieve greater accuracy, doctors will put patients on a headrest during adult surgeries.  There are various measuring tapes on the head frame that can measure the patient's head shape parameters.  This operation method belongs to the framed three-dimensional calibration. Compared with the frameless three-dimensional calibration mentioned above, it is a relatively original scalp incision positioning method in neurosurgery.

    This time .c om Zhang Si.  &#24378&#29306&#32&#32&#35835&#29306&#12290Speaking of the current patient being a child, children are not allowed to use headrests.  The headrest is too heavy, and children's skulls are weaker than adults. There is a fear of accidents when using the headrest. Doctors can avoid it if possible.

    Control the big one and control the owl.  Even if these previous preparations are complete, unfortunately, there may continue to be problems with the positioning during the operation.  This is an error that often occurs when using three-dimensional navigation systems in minimally invasive neurosurgery. The academic name is image drift. Statistics show that the occurrence rate of this error can reach more than 60%.

    The reason is that there is cerebrospinal fluid flowing in the brain. As long as the patient's head moves, the cerebrospinal fluid will flow and cause changes in the brain tissue.  During the operation, the patient's head was fixed and the patient's head remained motionless. However, the doctor had to look for something in the tofu-like brain and push away the lower brain tissue. In this way, the position and shape of the brain tissue would change.  Who makes the brain tissue soft and easily passive.

    Therefore, in order to achieve real-time and accurate neurosurgery, unless there is real-time imaging picture recording software to adjust the three-dimensional image.  As mentioned above, there are many reasons why real-time imaging recording is not possible, so it is impossible to adjust three-dimensional images in real time during surgery.

    The only way to break through is artificial intelligence, which relies on computers to calculate and deduce the images of brain tissue movement in real time

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