-
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
F
DG
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<
/p>
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<
/p>
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.
< br>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
< br>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. <
/p>
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
F
DG
，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