Coronary CT scan

Coronary CT is an auxiliary test for checking the normality of arteries. CT equipment mainly has the following three parts: 1 scanning part is composed of X-ray tube, detector and scanning frame; 2 computer system will scan the collected information data for storage operation; 3 image display and storage system will be processed by computer, The reconstructed image is displayed on a TV screen or taken with multiple cameras or laser cameras. The number of detectors has grown from the original one to as many as 4,800 now. The scanning method has also evolved from translation/rotation, rotation/rotation, rotation/fixation to the newly developed spiral CT scan (spiralCTscan). The computer has large capacity and fast calculation, and can realize image reconstruction immediately. CT angiography can be obtained by injecting contrast agent for angiography. The corresponding symptoms can be judged by the above instrument examination. Basic Information Specialist Category: Cardiovascular Examination Category: CT Applicable gender: whether men and women apply fasting: not fasting Tips: normal rest and diet. Normal value The anatomy of the coronary artery was free of deformities and non-obstructive lesions. Clinical significance Abnormal results CTA (CT angiography) can be used to determine arteritis, arteriosclerosis obliterans, aortic aneurysm and dissection, to help clinical diagnosis. The population in need of examination has patients with cardiovascular disease. Precautions Taboo before examination: normal rest and diet. Requirements for examination: Explain and appease the patient's psychological state while waiting for the examination. Briefly and carefully advise the patient on the requirements of the examination process and the matters needing attention, so as to eliminate the concerns and keep the patient in good condition. The mentality is conducive to the smooth progress of the inspection. This requires the doctor to carefully explain to the patient the normal reaction during the examination (such as the patient's body heat when the contrast agent is injected into the body), to avoid the patient's nervousness, resulting in increased heart rate and affecting the quality of the examination. Inspection process In addition to explaining the precautions to the patient during the examination, the breathing training is also a part that cannot be ignored. The inhalation amplitude is moderate (same as the inspiratory amplitude of normal breathing, avoid deep inhalation), remember that the amplitude of each breath of the patient should be consistent to prevent the patient from breathing too deep or over during the enhanced scan. Shallow, lose the proper examination area; at the same time, ask the patient to keep the chest and abdomen at rest while holding the breath, do not exercise to avoid motion artifacts; observe the heart rate changes while the patient is breathing training, try to avoid The heart rate changes too much due to inhalation or poor breath holding. These seemingly trivial small links are not imaging techniques, but failure to fully communicate with patients and achieve their cooperation often leads to failures in inspections. Not suitable for the crowd Inappropriate people: Due to the high price of the examination, it is not included in the routine medical examination.

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