Table 1.

Summary of data from excised diseased parathyroid glands.

Patient #	Pre-ligation speckle contrast	Post-ligation speckle contrast	Pre-excision [PTH] (pg/mL)	Post-excision [PTH] (pg/mL)
1	0.076	0.126	86	26
2	0.057	0.094	142	34
3	0.062	0.131	172	32
4	0.074	0.130	119	115
4	0.069	0.119	115	45
5	0.064	0.093	151	53
5	0.048	0.085	53	N/A
5	0.084	0.113	N/A	N/A
6	0.063	0.092	130	31
7	0.067	0.115	76	26

In all cases there was a large increase in speckle contrast seconds after ligation of the blood supply to the gland. There was also a decrease in PTH related to the number of diseased glands removed. In patient 5, LSCI data was obtained from 3 glands that were excised, however PTH measurement was not performed after removal of glands 2 and 3.