所有你要知道的关于PET-CT检查的事儿

All You Need to Know About Your PET/CT Scan

I did my PET Scan Tuesday, March 26th 2007,

我在2007年3月26日星期二做了PET检查。

Let me take you through the whole procedure and let me put to rest any thoughts you might have that it might be harmful, unsafe, nerve-wracking or unpleasant. It will be none of these.

让我给你讲讲我的整个经历，我猜你可能认为做PET检查会是有害的，不安全的，伤脑筋的或者不舒服的。事实并非如此。

The reason I had a PET Scan or to give it its full name a CT-PET Scan was to try to identify why my brain functions were not performing correctly.

我进行PET检查（其实全称是PET-CT检查）的原因是想确定为什么我的脑功能会出现问题。

Most times a PET Scan is used to identify and monitor the progress of various cancers. The procedure is costly and you can explore why a PETscan is costly. There are not many PET-CT scanners around. One of the reasons for this is that the radioactive sugar called FDG used in the scanning procedure does not travel long distances.

通常PET检查是用来确定和检测各种癌症的进程。这项检查价格不菲，你可以理解为什么会这样。PET-CT检查中心还没有普及，其中一个原因是检测时使用的被称为FDG的放射性葡萄糖不能长途运输。

So it is ideal to have the PET scanner close to the laboratory where the FDG is produced. The FDG is produced in a Cyclotron.

所以可以想象PET检查中心必须临近生产FDG的实验室。FDG是用回旋加速器制造的。

I live in Johannesburg South Africa and there is, at the time of writing this page, only one PET scan - CT scan unit in the country. It is about 6 kms from my home at the Linksfield Clinic. I believe there is a PET Scanner system coming to Cape Town soon since there has been an FDG Cyclotron production unit built at Faure.

我住在南非的约翰内斯堡，在写这篇文章的时候，我们国家只有一个PET-CT检查中心。它位于距离我家大约6公里的林克斯韦尔德诊所。我认为PET检查系统会很快来到开普敦，因为已有一个回旋加速器装置落户福雷。

What is a PET Scan?

什么事PET检查？

It has a long name ... Positron Emission Tornography.

它有一个很长的名字…正电子断层扫描仪。

In preparation for a PET Scan you will be told to drink quite a lot of water during a 16 hours period prior to the PET Scan itself.

在进行PET检查前的16小时中，你会被要求喝很多水。

You will be asked not to eat anything for 12 hours before the PET Scanning procedure.

还要禁食12小时。

You will be given a very specific time for the PET Scan because the radio-isotope has a definite and specific life span. Read the FDG information.

你的PET检查时间必须严格规定，因为放射性同位素有明确和具体的寿命。可以参阅FDG的相关信息。

A PET/CT Scan is a three stage procedure.

一个PET-CT检查分三个步骤进行

The first stage involves an injection of a radio-isotope (FDG) into the blood circulation. This is done through a saline drip.

第一步，通过吊盐水的方式将放射性同位素（FDG）注射到血液循环中。

The radioisotope is called FDG, It is a very specially prepared sugar.

这种放射性物质被称为FDG，是一种经过特殊处理准备的糖类。

After being injected with the FDG (completely painless with the exception of the prick to install the saline drip.) you will be required to rest for one hour. You will be probably be placed in a special room close to the PET Scanner. The room is remote from other locations in the PET Scan centre because of the radiocative status of the FDG. In my case it was just a pleasant room with a comfortable bed on which I lied for an hour.

注射完FDG（这一过程除了吊盐水时进针的刺痛以外完全无痛。），你会被要求休息一小时。你将被安置在靠近PET机的特殊房间中。

During the hour the body is metabolizing the FDG just like any normal sugar.

在这一个小时中，和其他普通糖类一样FDG被身体代谢。

Once the hour is up you will be taken to the CT/PET Scanner. This is a dual camera system. The first part of the system is a CT Scanner. If you look at the image above (Siemens CT/PET) you will notice that there are 2 sections to the scanner ... the first section is the CT scanner.

一个小时后，你将进入PET-CT室。PET-CT机是一种双重影像系统。第一部分为CT机。如果你观察上图（西门子PET-CT机），你会发现这款扫描仪分为两个部分…第一个部分为CT机。

You will be lying on your back and will be rolled into a wide tunnel. There is very little fear of claustrophobia. If you've ever had an MRI Scan you will know that the MRI chamber can be a little claustophobic.

你会仰卧，然后被推送入一个宽敞的孔道中，很少会有幽闭恐惧的感觉。如果你做过MRI，你就会知道关在MRI室中是产生一些幽闭恐惧的。

The PET Scan CT Scanner is a piece of cake compared to the MRI scanner