| Autor: |
Hajnal JV; Robert Steiner Magnetic Resonance Unit, Hammersmith Hospital, Royal Postgraduate Medical School, London, United Kingdom., Myers R, Oatridge A, Schwieso JE, Young IR, Bydder GM |
| Jazyk: |
angličtina |
| Zdroj: |
Magnetic resonance in medicine [Magn Reson Med] 1994 Mar; Vol. 31 (3), pp. 283-91. |
| DOI: |
10.1002/mrm.1910310307 |
| Abstrakt: |
To assess the effect of stimulus correlated motion on the appearance of functional magnetic resonance images, conventional visual and motor protocols were each performed by four normal volunteers and an image co-registration technique was used to retrospectively monitor subject motion. In three studies synthetic data sets were constructed from single baseline images using the positional information obtained from the co-registration procedure. Cumulative difference images were then created from both the synthetic and functional image sets. Stimulus correlated motion was detected in all eight studies and the synthetic cumulative difference images showed striking similarities to the equivalent functional images in each case. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
Plný text