Which of the following investigations has high sensitivity but low specificity for diagnosis in the early stages of acute osteomyelitis
a. Radioscintigraphy with 99m Tc-HDP reveals high activity in both the perfusion and bone phase.
b. This is a highly sensitive test even in the early stages but it has low specificity and other inflammatory lesions can show similar changes.
c. In doubtful cases scanning with 67Ga citrate or III. In labeled leucocytes may be more revealing.