Pulmonary puncture needle steps and methods

First, a conventional lung CT scan was performed, and then the distance and Angle from the puncture point to the predetermined puncture target were measured on the CT image. The puncture point was subjected to routine skin disinfection, towel spreading and local anesthesia. Measure the puncture depth, hold client's breath, and proceed at a predetermined Angle. Attention should be paid to keeping the needle in the same scanning level of the puncture point, and the direction should be parallel or vertical to the ground as far as possible. After the puncture is in place, local CT scan should be carried out to determine whether the needle tip is in the lesion. If the direction needs to be adjusted, the needle should be retreated to the chest wall for adjustment, or pulled out for re-puncture. Hold client's breath while adjusting the needle or pulling out the needle. When the needle is inside the body, let client breathe calmly and try to avoid coughing. The puncture needle was withdrawn after puncture, and the puncture specimen was fixed and sent for pathological examination.

In lung biopsy in clinical diagnosis and differential diagnosis of diseases in recent years more and more widely in application, there are many kinds of non vascular guidance method can achieve a biopsy or treatment, in the aspect of medical imaging and CT, perspective, using which kind of technology depends on the location, size and nature of the lesion and doctor's proficiency, habits, and the skilled ability of patients. CT - guided percutaneous lung biopsy is simple and has few complications.

The biggest advantages of cT-guided puncture are: Density, high resolution of CT images, which can clearly show the size of the lesions, pouch or solid, or necrosis, and the relationship with the surrounding tissues and organs, are not subject to any interference, such as gas, fat and bone imaging without overlap, can use thin layer scanning, accurate positioning and can judge the position of the tip, so, good security, biopsy success rate is high, up to 90%, the treatment effect is very good also. However, puncture guided by CT also has disadvantages: due to not timely imaging, respiratory movement will cause errors for accurate positioning, so patients must be trained to master the respiratory phase. When the puncture needle needs to be at a certain Angle with the cross section, the puncture technique is difficult, so the Angle of the gantry frame can be adjusted.

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