A 55-year-old man, who has been on bed rest for the past 10 days, complains of breathlessness and chest pain. The chest X-ray is normal. The next step in investigation should he:

Radiology

A 55-year-old man, who has been on bed rest for the past 10 days, complains of breathlessness and chest pain. The chest X-ray is normal. The next step in investigation should he:

All of the following form radiolucent stones except:

The usual radiographic appearance of an osteosarcoma is:

A middle aged female presents with slowly progressive weakness of lower limbs,…