Table 3 The results of comparison of HPR (i.e., HPR classified as “present”) among MSA-P, MSA-C patients, and age-matched normal subjects
Variables | MSA-P (n = 10) | MSA-C (n = 18) | Normal (n = 39) | P-value | |
|---|---|---|---|---|---|
Mean age ± standard deviation (age range) | 57.9 ± 4.7 years (52–64 years) | 59.1 ± 4.2 years (54–66 years) | 57.0 ± 3.8 years (50–66 years) | 0.1883 | |
Gender ratio | Men | 40.0% | 38.9% | 53.9% | 0.5614 |
Women | 60.0% | 61.1% | 46.1% | ||
Distribution of HPR | Right | 60.0% | 56.0% | 51.0% | 0.8710 |
Left | 40.0% | 44.0% | 49.0% | ||
Maximum anteroposterior dimension of HPR | Anterior edge ~ Anterior quarter | 0.0% | 5.5% | 5.1% | 0.0003* |
Anterior edge ~ Anterior half | 0.0% | 16.7% | 28.2% | ||
Anterior edge ~ Anterior three quarters | 0.0% | 0.0% | 23.1% | ||
Posterior edge ~ Posterior quarter | 0.0% | 0.0% | 0.0% | ||
Posterior edge ~ Posterior half | 40.0% | 5.6% | 0.0% | ||
Posterior edge ~ Posterior three quarters | 0.0% | 0.0% | 0.0% | ||
Nearly full to full length | 60.0% | 72.2% | 43.6% | ||
Maximum transverse dimension of HPR | >2 mm | 10.0% | 0.0% | 0.0% | 0.0554 |
<2 mm | 90.0% | 100.0% | 100.0% | ||
Discontinuity of HPR | Present | 80.0% | 38.9% | 28.2% | 0.0112* |
Absent | 20.0% | 61.1% | 71.8% | ||
Hypointensity of nearby putamen | Present | 78.9% | 51.6% | 49.2% | 0.0668 |
Absent | 21.1% | 48.4% | 50.8% | ||
Putaminal atrophy | Present | 50.0% | 11.1% | 0.0% | <0.0001* |
Absent | 50.0% | 88.9% | 100.0% | ||