Name
Abstract | ||
|---|---|---|
Motivated by the observation that the diagonal pattern of intensity non-uniformity usually associated with linearly polarized
radio-frequency (RF) coils is often present in neurological scans using circularly polarized coils, a theoretical analysis
has been conducted of the intensity non-uniformity inherent in imaging an elliptically shaped object using 1.5 T magnets and
circularly polarized RF coils. While an elliptic geometry is too simple to accurately predict the variations in individual
anatomical scans, we use it to investigate a number of observations and hypotheses. (i) The widely made assumption that the
data is corrupted by a smooth multiplicative field is accurate for proton density images. (ii) The pattern of intensity variation
is highly dependent on the shape of the object being scanned. (iii) Elliptically shaped objects produce a diagonal pattern
of variation when scanned using circularly polarized coils.
|
Year | DOI | Venue |
|---|---|---|
1998 | 10.1007/BFb0056247 | MICCAI |
Keywords | Field | DocType |
understanding intensity non-uniformity,radio frequency | Elliptic geometry,Diagonal,Computer vision,Proton density,Multiplicative function,Computer science,Optics,Magnet,Artificial intelligence,Linear polarization | Conference |
Volume | ISSN | ISBN |
1496 | 0302-9743 | 3-540-65136-5 |
Citations | PageRank | References |
16 | 3.13 | 6 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| John G. Sled | 1 | 688 | 191.06 |
| G Bruce Pike | 2 | 699 | 132.31 |