Parathyroid Scintigraphy - European Association of Nuclear Medicine

Table 3. Radiation dose to operating theatre personnel during MIRS with the low (37 MBq)
99m Tc-sestamibi dose protocol used in our centre
µGy/hour µGy/year*
Surgeon’s body 1.2 120
Surgeon’s hands 5.0 500
Anaesthesiologist 0.7 70
Instrument nurse 1.1 110
Other nurses 0.1 10
*Estimated for 100 interventions, each lasting 60 min
Figure 1. Preoperative dual-tracer parathyroid subtraction scintigraphy. Left image: 99m Tc-pertechnetate
scan showing a normal thyroid gland. Middle image: 99m Tc-sestamibi scan showing an
area of radiotracer uptake juxtaposed to the lower pole of the left thyroid lobe. Right image:
Subtraction ( 99m Tc-sestamibi- 99m Tc-pertechnetate) image, clearly showing a left inferior parathyroid
adenoma. This patient was offered MIRS.