宫颈核磁共振扫描

定义

A cervical 核磁共振成像 (magnetic resonance imaging) scan uses energy from strong magnets to create pictures of the part of the spine that runs through the neck area (cervical spine).

核磁共振成像不使用辐射(x射线).

单 核磁共振成像 图像被称为切片. The images can be stored on a computer or printed on film. 一次检查产生许多图像.

选择的名字

核磁共振成像 - cervical spine; 核磁共振成像 - neck

如何执行测试

You will wear a hospital gown or clothes without metal zippers or snaps (such as sweatpants and a t-shirt). 一定要摘掉手表、珠宝和钱包. 核磁共振成像可以检测到任何金属物体. 某些类型的金属会导致图像模糊.

You will lie on a narrow table that slides into a tunnel-shaped scanner.

一些检查使用一种特殊的染料(造影剂). Most of the time, you will get the dye through a vein in your arm or hand before the test. 染料也可以通过注射给药. The dye helps the radiologist see certain areas more clearly.

During the 核磁共振成像, the person who operates the machine will watch you from another room. The test most often lasts 30 to 60 minutes, but may take longer.

如何准备考试

You may be asked not to eat or drink anything for 4 to 6 hours before the scan.

Tell your health care provider if you are afraid of closed spaces (have claustrophobia). You may be given a medicine to help you feel sleepy and less anxious. Your provider may suggest an "open" 核磁共振成像, in which the machine is not as close to the body.

在测试前，告诉你的十大赌博平台排行榜你是否有:

• 脑动脉瘤夹
• 某些类型的人工心脏瓣膜
• 心脏除颤器或起搏器
• 内耳(耳蜗)植入物
• Kidney disease or dialysis (you may not be able to receive contrast)
• Recently placed artificial joints or surgery with implanted metal screws and plates
• 某些类型的血管 支架
• Worked with sheet metal in the past (you may need tests to check for metal pieces in your eyes)

因为核磁共振成像含有强磁铁, metal objects are not allowed into the room with the 核磁共振成像 scanner:

• Pens, pocketknives, and eyeglasses may fly across the room.
• Items such as jewelry, watches, credit cards, and hearing aids can be damaged.
• Pins, hairpins, metal zippers, and similar metallic items can distort the images.
• Removable dental work should be taken out just before the scan.

考试的感觉如何

核磁共振检查不会引起疼痛. 你需要安静地躺着. Too much movement can blur 核磁共振成像 images and cause errors.

The table may be hard or cold, but you can ask for a blanket or pillow. The machine makes loud thumping and humming noises when turned on. 你可以戴上耳塞来阻挡噪音.

An intercom in the room allows you to speak to someone at any time. Some 核磁共振成像s have televisions and special headphones to help the time pass.

There is no recovery time, unless you were given a medicine to relax. After an 核磁共振成像 scan, you can return to your normal diet, activity, and medicines.

为什么要进行测试

这种测试最常见的原因是:

• Severe neck, shoulder, or arm pain that does not get better after treatment
• Neck pain along with leg weakness, numbness, or other symptoms

颈椎核磁共振扫描也可用于:

• 脊柱先天缺陷
• 包括脊柱的感染
• 脊柱损伤或创伤
• 多发性硬化症
• 严重的脊柱侧凸
• 脊柱的肿瘤或癌症
• 脊柱关节炎

核磁共振成像 works better than CT scan in diagnosing these problems most of the time.

A cervical 核磁共振成像 may also be done before spinal surgery.

正常的结果

A normal result means the part of the spine that runs through your neck and nearby nerves appears normal.

异常结果意味着什么

导致异常结果的最常见原因有:

• 椎间盘突出或“滑动” (颈神经根病)
• 颈椎变窄(脊髓狭窄)
• Abnormal wear of the bones and cartilage in the neck (颈椎病)

异常结果也可能是由于:

• 由于年龄的增长而发生的退行性变化
• 骨感染(骨髓炎)
• 椎间盘炎症(关节盘炎)
• 脊柱感染
• 多发性硬化症
• 脊髓损伤或压迫
• 脊柱骨折
• 脊柱肿瘤
• 生长异常

Talk to your provider about your questions and concerns.

风险

核磁共振成像不使用辐射. There have been no reported side effects from the magnetic fields and radio waves.

It is also safe to have 核磁共振成像 performed during pregnancy. 没有任何副作用或并发症被证实.

The most common type of contrast (dye) used is gadolinium. 它很安全. 对这种物质的过敏反应是罕见的. However, gadolinium can be harmful to people with kidney problems that need dialysis. If you have kidney problems, please tell your provider before the test.

The strong magnetic fields created during an 核磁共振成像 can cause heart pacemakers and other implants to not work as well. It can also cause a piece of metal inside your body to move or shift. For safety reasons, please do not bring anything that contains metal into the scanner room.

参考文献

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