David’s doctors would use Computed Tomography (CT) and Magnetic Resonance to evaluate the effect of chemotherapy.
EXPLANATION:
The treatment of lung tumours when done with the help of chemotherapy, Computed Tomography (CT) and Magnetic Resonance (MR) imaging are the vital tools used in monitoring the changes in the size of the tumour.
These help in the conclusive evaluation the effect of chemotherapy.
But, in case of these morphologic imaging techniques, residual tumour tissue cannot be differentiated from the necrotic tumour or fibrotic scar which acts as a major limitation.