Lung scintigraphy

Function diagniosis of the lung

The lung scintigraphy is a non-invasive technique for the assessment of pulmonary function. The examination is split in two parts - the ventilation scintigraphy and the perfusion scintigraphy.
The ventilation scintigraphy evaluates the aeration of the lung. You inhale an aerosol (so-called Technegas) via a tubing system. The inhaled gas is predominantly attached to the alveolae and will be made visible with a Gamma cam and a SPECT examination afterwards.
Subsequently, the perfusion scintigraphy follows. With it, the blood flow of the lung will be evaluated. For this examination you will be injected with an radioactive substance (LyoMAA). This substance will reach the lung via blood stream and stick to the small blood vessels.
If there is a stenosis of the vessels, less radioactive substance will reach them which shows diminished in the images.

For evaluation, the ventilation scintigraphy and perfusion scintigraphy will be compared to each other. They give information about performance, function and blood flow of the lung.
The complete examination takes about 1-1.5 hours.


- Suspected pulmonary embolism

- Evaluation of magnitude of chronic obstructive pulmonary diseases (COPD)

- Evaluation of lung function, e.g. prior to lung surgery