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The combination of PET (positron emission tomography) and CT (computed tomography) aims at generating reliable diagnoses at the lowest stress possible for the patients. As in scintigraphy, a radioactive substance is injected and its distribution in the body is documented by means of a special camera. By linking these images with anatomic scans of computed tomography, we receive extremely precise information for significant diagnostic findings.
In computed tomography (CT), many radiographs of one object are taken from different directions. Then, sectional images are reconstructed from the recorded volume. Computed tomography is only applied under strict observance of radiation protection and when the examination is clinically necessary.
In some cases, the use of contrast agents (iodine) is necessary to differentiate between individual structures as well as between healthy and unhealthy tissue. Undesirable side effects are (extremely) rare.
The so-called hybrid imaging – the combination of complementing imaging processes in one apparatus (PET/CT but also SPECT/CT) – offers – in one single examination – completely new possibilities of clinical diagnostics, therapy planning and monitoring treatment progress. This is especially valuable in cancer treatment (PET/CT), but also in orthopedics (skeletal system), cardiology (heart attack risk assessment ) and other areas.
The Radiology Center offers the following examinations with computed tomography (CT):
- Brain, skull (hemorrhages, tumors, strokes), facial bones, paranasal sinuses,
jaw and dental CT
- Diagnosis and staging of oncologic diseases
- Angiography (basilar arteries, common carotid artery, aorta, renal arteries, pelvic and peripheral arteries
- Lung (also with low-dose technology for early detection of lung cancer)
- Liver, pancreas, kidneys, intestines (so-called colon-CT for detection of colon cancer)
- Spine, joints, bones (precise therapy planning for bone fractures)
Biopsy: Alternative to surgical interventions under general anesthesia by means of CT targeted needle biopsies under local anesthesia
Drainage: ultrasound targeted insertion of a thin catheter by means of a fine needle enables smooth drainage of pathological accumulation of liquid under local anesthesia. This method is applied when e.g. this accumulation of liquid cannot be treated sufficiently by pharmaceuticals.
Pain therapy: CT targeted infiltrations, treating back pains caused by herniated disks, narrowing of the vertebral canal, bone deterioration and fractures of the vertebrae.
Generally, PET (positron emission tomography) does not differ from other nuclear medical methods (scintigraphy, SPECT). The patient gets a radioactive substance (radiopharmaceutical) and after a certain phase of accumulation, the examination is carried out by the PET scanner. The specialty of PET is the way the applied positron emitters disintegrate. They have especially favorable physical characteristics for measuring and imaging. Compared to other nuclear medical methods, they enable reliable qualification of activity and have a much higher spatial resolution so that even very small lesions can be detected in the organism.
The most frequently used PET radiopharmaceutical is FDG (18FluorineDesoxyGlucose). FDG is applied to examine glucose metabolism, which e.g. can be increased in case of tumor diseases or inflammations. FDG/PET examinations of the brain focus especially on areas showing diminished glucose metabolism, e.g. to diagnose epilepsy and dementia.
Other radiopharmaceuticals target and show very specific areas in the body. Because PET radiopharmaceuticals must be special-ordered and have short halflives, it is absolutely necessary to schedule appointments in advance and to keep them.
The combination of PET and CT (PET/CT) brings together the efficiency of metabolicimaging of positron emission tomography with the anatomic-morphologic representation of computed tomography. This method is especially appropriate for the medical care of oncological patients to evaluate the extent of the disease before therapy, and to establish if and when a surgical intervention may improve prospects for healing. In addition, this combined procedure documents, both during and after treatment, the response to cancer therapy.
The Radiology Center offers the following examinations:
18F-FDG: a radioactive sugar solution enables the vizualization of the energy requirement e.g. of tumors, but also shows brain metabolism.
Oncology: PET in combination with CT as PET/CT (imaging of tumor activity), for diagnostics, staging and monizoring response of various tumors to therapies.
Neurology: metabolistic function of the brain, diagnosis of dementia