| Autor: |
Akinobu, Kita, Hidehiko, Okazawa, Katsuya, Sugimoto, Ryoto, Kaido, Nobuyuki, Kosaka, Takayuki, Shibutani, Masahisa, Onoguchi, Eiji, Kidoya, Hirohiko, Kimura |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Annals of nuclear medicine. 35(12) |
| ISSN: |
1864-6433 |
| Popis: |
In the [A striatum phantom was used in a phantom study, with the radioactivity concentration adjusted so that the right striatum:left striatum:brain parenchyma ratio was 8:4:1. Changes in SBR values and image quality, expressed as the % coefficient of variation (%CV) and normalized mean squared error (NMSE), with decreasing acquisition counts were evaluated. In the clinical study, 106 patients (73.1 ± 9.6 years) with suspected parkinsonian syndrome underwent [In the phantom study, image quality decreased with a reduction of acquisition counts. The %CV and NMSE decreased by up to 52.5% and 81.5%, respectively. SBR values decreased slightly as acquisition counts decreased. In the clinical study, the mean values ofThis study demonstrated that SBR values decrease as a function of reduced acquisition counts. Since |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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