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St. Vincentius Hospital Karlsruhe-Academic Hospital of the University of Freiburg

location_on Karlsruhe, Germany
9.8/10 from 23 Votes

Department of Nuclear Medicine (333813)

Johann Rendl

Priv. Doz. Dr. med. Dipl. Phys.

Johann Rendl

Specialized in: nuclear medicine

The Department of Nuclear Medicine at the St. Vincentius Hospital-Academic Hospital of the University of Freiburg is engaged in diagnostics and treatment of various conditions with the help of open radionuclides (radioactive substances). The head of the department is Priv. Doz. Dr. med. Dipl. Phys. Johann Rendl.

Due to the ability of radionuclides to penetrate deeply into tissues by using certain measuring devices (eg gamma cameras), physicians can visualize the processes of almost all organs in the human body by a non-invasive or minimally invasive methods. Such methods of research are sparing and have minimal negative impact on the human body. 

Research provided by the department is painless. Painful sensations can be caused only a prick that resembles a skin puncture when drawing blood for analysis.

Irradiation dose is usually very low, as in a routine X-ray study, since most of the injected radioactive substances disintegrate after a short time, or are quickly removed from the body through the kidneys. The number of images and the dose of radiation are in no way connected, since the images are taken by means of radioisotopes inserted into the human body, and the recording devices themselves do not radiate anything. In this way, doctors can receive many images from different angles or take repeated images without increasing or additional exposure to radiation.

Studies do not cause allergic reactions, since the chemical constituent of a radioactive drug is extremely low.

The Department of Nuclear Medicine offers the following diagnostic services:

Thyroid examination (scintigraphy of the thyroid gland) is used to test the functions of the thyroid gland. It is the only visualization method capable of characterizing the nodes in terms of their functions.

Examination of the skeleton bones (scintigraphy of the bones of the skeleton) is performed using a radioactively labeled substance. It studies the metabolism of bone tissue. The study is an effective method of early detection of metastases and tumors for treatment and prevention of the consequences of pathologies, for example destruction of a bone which has a risk of fracture. In addition, this method of research helps to diagnose other diseases, for example, inflammatory joint changes in diseases of the rheumatic type. The advantage of scintigraphy of the bones of the skeleton in comparison with other methods of visualization is that it can be used to study the entire human skeletal system.

Examination of the heart (perfusion scintigraphy of the myocardium) is performed to check the blood supply of the myocardium in the active state(veloergometer) and at rest. At maximum physical loads, a radioactive drug, for example, radioactive thallium, which is absorbed by the cardiac muscle depending on the blood flow, is administered intravenously. Patients who are contraindicated to use the veloergometer, receive adenosine through the vein. The procedure lasts about 5 minutes and can cause a temporary feeling of squeezing in the head, neck or chest. The recording time in the gamma camera is about 30 minutes. Comparison of the images of the heart under load and at rest allows doctors to identify or eliminate the corresponding cardiac circulatory disturbance associated with stress (stress-induced cardiac ischemia) and, consequently, coronary heart disease.

Diagnosis of other organs covers the study of the kidneys, digestive tract, brain and other organs. Also the range of services includes somatostatin-receptor scintigraphy.

  • Therapeutic services of the department:
  • Treatment of benign and malignant thyroid diseases with radioactive iodine
  • Treatment of inflammatory joint diseases (radiosinectomy)
  • Pain therapy for malignant tumors that affect other organs (especially bone pain)
  • Treatment of malignant tumors with damage to the cavities of the organs (stomach, lungs, pericardium)

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