Fully Automated Quantification of the Striatal Uptake Ratio of [^99mTc]-TRODAT with SPECT Imaging: Evaluation of the Diagnostic Performance in Parkinson’s Disease and the Temporal Regression of Striatal Tracer Uptake

Table 1

Demographical summary of the subjects involved in this study. In the Parkinson’s disease (PD) group, the subgroups were divided based on clinical duration, which was defined as the number of years between the onset of PD-related symptoms and the TRODAT scan for an individual patient.

	Disease; duration, years		Sex		Age at scan, years				Age of symptom onset, years				Disease duration at scan, years
			M	F	Mean	SD	Max	Min	Mean	SD	Max	Min	Mean	SD	Max	Min
PD group	all	365	222	143	61.6	11.3	87	28	55.9	11.7	80	27	5.8	5.3	33	0
Grou	2	118	70	48	59.8	11.4	78	28	58.6	11.4	77	27	1.2	0.7	2	0
Grou	35	100	63	37	61.3	11.9	83	33	57.4	11.9	80	30	3.8	0.8	5	3
Grou	610	87	50	37	62.1	10.9	87	37	54.6	11.1	80	28	7.5	1.4	10	6
Grou	11	60	39	21	65.0	10.0	85	42	49.5	10.3	70	27	15.5	4.4	33	11
nPD group		61	28	33	63.0	16.3	86	21
Healthy control		28	18	10	52.3	15.7	82	21
Essential tremor		33	10	23	72.1	10.0	86	49