Case History: This is a 61 year old male patient with pulmonary silicosis, under observation.
Radiological Examinations
The plain chest radiogram shows nodular densities bilaterally. According to the ILO classification the size of these nodular densities correspond to q and profusion, 1/1. The CT shows diffusely scattered nodules in both lungs.
99mTc perfusion imaging
Technegas planar imaging
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Clinical Point: How do the diffusely distributed nodules seen on plain CXR and CT affect ventilation and perfusion in the lungs? |
99mTc MAA Transverse SPECT
Technegas transverse SPECT slices
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General Comments: Perfusion SPECT indicates decreased perfusion corresponding to the lesions seen on CT and these match the ventilatory abnormalities seen on the Technegas SPECT. |
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