Final answer:
Adjusting the grid ratio is not the correct method for correcting excessive size distortion in a radiograph. Instead, the distance between the X-ray source and the patient or the patient and the image receptor should be altered.
Step-by-step explanation:
If a radiograph demonstrates excessive size distortion, simply adjusting the grid ratio is not the appropriate correction. Size distortion in radiography is typically related to the relationship between the object-to-image distance (OID) and the source-to-object distance (SOD). To minimize size distortion, you should either increase the distance between the X-ray tube and the patient (which in turn increases the SOD), or decrease the OID by positioning the patient closer to the image receptor. Adjusting the grid ratio would not affect the size distortion because the grid's function is to reduce scatter radiation and improve image contrast, not to influence the size of the image.
To verify the appropriateness of the correction, you should check the solution for reasonableness by considering the magnitude and units of the measurements. A significant change in the SOD or OID should yield a noticeable change in the size distortion on the radiograph. This kind of assessment and adjustment is in line with standard problem-solving strategies in radiographic imaging and physics.