What is a SPECT?
The SPECT examination is a diagnostic measure from the field of nuclear medicine. The abbreviation SPECT stands for Single Photon Emission Computed Tomography. This is an examination procedure that can be used to visualize the metabolic processes in various organs. The physician uses radioactive substances called tracers for this purpose.
Special form: SPECT/CT
SPECT is well suited for assessing the metabolism of individual organs. However, it cannot be used to assess their structure – this requires conventional imaging, for example X-rays or computer tomography (CT). However, there is also a combination procedure of SPECT and CT: SPECT/CT combines the information on the structure of an organ with that on its functionality.
When is a SPECT performed?
Other applications of SPECT include:
- Changes in bone metabolism (in tumors or bone inflammation)
- brain diseases (Alzheimer’s dementia, epilepsy or Parkinson’s disease)
- hormone-producing tumors (neuroendocrine tumors)
What is done during a SPECT?
The examination can be performed both in a specialized doctor’s office and in a hospital. First, the doctor gives the patient venous access via a needle in the crook of the arm or the back of the hand. He can also use this to administer a sedative if the patient so desires. Above all, however, he uses the access to insert the radioactive tracer material. This is then distributed throughout the body via the bloodstream. It can take a few minutes or even hours for it to accumulate in the organ to be examined. During this time, the patient should lie relaxed and still so as not to influence the metabolism.
The duration of the examination can be over an hour. However, the patient is not left alone during this time, but is supervised by assistants or the doctor. So if he feels uncomfortable, he can call in and the examination can be stopped.
What are the risks of SPECT?
The SPECT itself is a painless examination for the patient. Only the administration of the radioactive tracers can cause pain or infection at the puncture site, as well as injury to nerves or vessels. Intolerance to the tracer is extremely rare.
What do I need to be aware of after a SPECT?
After the SPECT, you are not allowed to drive a vehicle if you have received a sedative. It is therefore best to arrange for someone to pick you up from your appointment.
