Pre- and Postsynaptic Dopamine SPECT in Idiopathic Parkinsonian Diseases: A Follow-Up Study
Table 5
PD and APD patients with SPECT: clinical laterality versus DAT uptake in putamen and clinical subtype at baseline. The ratio between left and right DAT SPECT uptake in putamen at baseline.
(a)
Clinical laterality at baseline
No reported laterality
Left
Right
Symmetrical
Total
Side with lowest DAT uptake in putamen
Right
1
11
3
11
26
Left
5
0
10
8
23
Total
6
11
13
19
49
Parkinsonism type
PIGD
6
5
6
15
32
Tremor
0
1
6
3
10
Indeterminate
0
5
1
1
7
Total
6
11
13
19
49
PIGD: postural instability and gait difficulty and 95% CI: 95% confidence interval.
(b)
Parkinsonism motor subtype
n
Mean left/right ratio
95% CI
PIGD
32
1.00
0.95–1.05
Tremor
10
0.93
0.82–1.03
Indeterminate
7
1.15
0.99–1.30
Total
49
1.01
0.96–1.05
PIGD: postural instability and gait difficulty and 95% CI: 95% confidence interval.
