Doppler of the legs Doppler sonography is used particularly frequently to examine the blood vessels in the legs. In principle, a distinction can be made between an examination of the arteries and an examination of the veins. A possible weakness of the veins can be detected or excluded by Doppler sonography. Deep vein thrombosis (blockage … Doppler of the legs | Doppler sonography
Preparation for the examination No special preparation is necessary for the performance of a Doppler sonographic examination. The ultrasound waves used do not influence the body functions in any way, so no special measures need to be taken in advance. It is sufficient that the patient positions himself on the examination couch according to the … Preparation for the examination | Doppler sonography
What are the risks? Doppler sonography is a form of examination without any risks or possible side effects. It is also painless and requires no special preparation. In contrast to X-rays, for example, the ultrasound waves used cannot cause any damage to the human body. How long does the examination take? How long a Doppler … What are the risks? | Doppler sonography
Definition Positron emission tomography (PET) is a special imaging examination procedure that can be used to visualize metabolic processes in the body. For this purpose, the patient is administered low-level radioactive glucose via the vein, made visible with a measuring unit and the information is processed into a spatial image. The sugar is distributed throughout … Positron emission tomography (PET)
Functionality of PET In positron emission tomography, good preparation and compliance with various measures are crucial for good image quality and informative value. Current blood values (especially kidney, thyroid and sugar values) must have been determined in advance. On the day before the examination, any physical exertion must be avoided. In addition, no more food … Functionality of PET | Positron emission tomography (PET)
Evaluation of the images The particles released during positron emission tomography are detected by a special detector. A connected computer calculates the incoming information and generates an image that shows the metabolic activity. Areas with high activity are displayed brighter than those with low activity. Some organs such as the brain or the heart naturally … Evaluation of the images | Positron emission tomography (PET)
The term radiation medicine (radiotherapeutics) encompasses a number of procedures and applications that deal diagnostically and/or therapeutically with ionizing radiation. This includes radiology, radiation therapy, and nuclear medicine (areas in which physicians can train to become specialists); in a broader sense, it also includes – more in the area of research – radiation biology, which … Radiation Medicine Today
Implementation Before the beginning of the scintigraphy no major preparations are usually necessary. However, depending on which organ/tissue is to be examined, certain guidelines can be made, so that the intake of medication may not always be continued or a fasting condition (especially in the case of examinations of the gastrointestinal tract) must be maintained. … Implementation | Scintigraphy
Radiation exposure Due to the use of modern radioactive materials with a fast decay time, the radiation exposure is relatively low. In everyday life, the body is exposed to a minimal natural radiation exposure, which is measured in Sievert and is about 0.2 mili Sievert, i.e. 2 thousandths of a Sievert. The radiation exposure depends … Radiation exposure | Scintigraphy
Contraindication There is no strict contraindication for a scintigraphy. Even in the case of pregnancy, this imaging procedure does not have to be dispensed with in principle, but should only be performed in extremely exceptional cases after thorough assessment of the indication. There is a relative contraindication for women who are in the breastfeeding phase, … Contraindication | Scintigraphy
Scintigraphy of the heart For the heart, the so-called myocardial scintigraphy, i.e. a depiction of the blood supply to the heart muscle, is most likely to be used.It is a special method used in special cases for patients with heart disease. The examination can be a guide in answering the question of whether some areas … Scintigraphy of the heart | Scintigraphy
Scintigraphy of the kidney There are also two different types of scintigraphy of the kidneys: Static renal scinitgraphy is used to visualize the functional kidney tissue. Technetium DMSA (dimercaptosuccinic acid) is usually used as the radioactive substance for this examination. It accumulates wherever living kidney tissue is present. This allows, for example, the detection of … Scintigraphy of the kidney | Scintigraphy
