Punctures
With a CT-assisted puncture, tissue samples can be taken from specific organ locations (e.g. lungs, liver, lymph nodes or bones). In most cases, this is possible under local anaesthetic. Thanks to constant computer tomography checks, the puncture needle can be placed precisely and with millimetre accuracy and surrounding organs can be spared. Small tissue samples are then taken at the target site for further examination (pathology, microbiology).
Drainage
CT-guided drainage may be necessary if fluid accumulates in one part of the body (e.g. pus or lymphatic fluid). The fluid can drain away via a drainage system. Samples of these fluid accumulations can also be analysed for germs, for example, to enable targeted treatment with antibiotics. The procedure is similar to CT-guided puncture. First, a hollow needle is advanced into the fluid accumulation under constant computerised tomographic control. A wire is then inserted via the hollow needle, through which a drain can be inserted after the hollow needle has been removed.
General procedure and duration
The duration of a CT-assisted puncture or drainage procedure can vary from patient to patient. The patient should be able to lie still for 30 minutes before the procedure. Depending on the body region and choice of the best possible access route, the examination is performed in the supine, prone or lateral position. In some cases it may be necessary to hold your breath for a few seconds.
Preparation
Before every CT-assisted puncture, patients are informed by a doctor. During this consultation, the procedure and possible complications are explained and questions are answered. Possible previous operations, allergies (e.g. medication, plasters) and medication (e.g. blood thinners) are important.
Laboratory values
Current blood values should be determined before a CT-assisted puncture (max. 2 weeks old). In addition to the coagulation values (Quick/INR, PTT and thrombocytes) and in some cases also thyroid values (TSH) and kidney values (creatinine) are necessary.