Which dimensions to detect the high quality of 3D C-arm?

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For three-dimensional C-arm such high-end medical equipment, what are the considerations for hospitals when purchasing?

Point of concern 1: the category of the registration certificate of the 3D C-arm

The three-dimensional C-arms on the market are either Class II or Class III, the difference between the two is that only C-arms with “digital tomography” (DTS) or “digital subtraction angiography (DSA)” can be managed in accordance with the Class III registration certificate. C-arms can only be managed under a Class III registration license. Therefore, it can be said that only has a class III medical device registration certificate can be considered a real three-dimensional C-arm. Currently imported three-dimensional C-arm brands such as Siemens, Ziehmu, are class III medical device registration certificate, while the domestic three-dimensional C-arm manufacturers Perlove medical production of the PLX7500A, the flat-panel three-dimensional C-arm to get the first domestic three-class medical device registration certificate.

Concerns two: three-dimensional C-arm imaging area and field of view

The imaging area and field of view of different brands of 3D C-arms are different, and a large enough imaging field of view can capture more image information in one shot. For example, the PLX7500A 3D C-arm has an intraoperative 3D imaging area of up to Φ18cm in diameter and 18cm in height, which can capture the entire cervical vertebrae, lumbar vertebrae, seven thoracic vertebrae, bilateral sacroiliac joints, femoral head, and unilateral pelvis at one time.

Concern 3: Image clarity of the three-dimensional C-shaped arm

The C-arm with isocentric design can avoid the movement of the C-arm frame in the horizontal and vertical directions, and always keep the shooting subject in the center of the ray beam, which reduces motion artifacts from the root and improves the image clarity.

Concern 4: Radiation dose of 3D C-arms

When using a 3D C-arm for image scanning, the volume of acquired images is large and the duration is long, so the radiation dose during the process also needs to be paid attention to. Especially in pediatrics and other dose-sensitive clinical applications, those with “pluggable filter grid” function of the C-arm can be converted to a low-dose mode of use, play a role in reducing radiation to care for the health of doctors and patients.

Concern 5: Combined use of 3D C-arms and surgical robots

With the gradual development of surgical navigation technology, the concept of minimally invasive, visual and precise surgery has been deeply rooted in people’s hearts, and the combination of 3D C-arm and orthopaedic surgical navigation robot will be further developed into a new comprehensive technical means with more accurate positioning, strong anti-interference ability and low radiation dose. The previously mentioned PLX7500A 3D C-arm can be connected with orthopedic surgical navigation and robot PL300B to realize real-time guidance planning of intraoperative images, assisting doctors to accurately locate surgical instruments and implants, and providing the possibility of realizing the digitalization and intelligent expansion of the operating room.

The combination of 3D C-arm and robot is mainly used for difficult and complex surgeries in the current clinical application of surgery, especially in spinal surgery and other high precision requirements for surgery, such as thoracolumbar screws, cervical screw placement, pelvic and other clinical surgeries. Of course, the actual data of the relevant types of surgery in the second-class hospitals accounted for a small amount, so the procurement of 3D C-arms valued surgical robots related to the combination of some large tertiary hospitals. It is recommended that hospitals synthesize their own needs to make a suitable choice.

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