Display Settings:

Items per page
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information

Results: 10

1.
Fig. 5

Fig. 5. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

Comparison of 3D reconstruction (A) without and (B) with the bias field inconsistency correction, shown in the original contrast (top) and in enhanced contrast (bottom).

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
2.
Fig. 4

Fig. 4. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

Simulated slice stacks acquired in three orientations. Each slice undergoes motion with 6 degrees of freedom—3 rotational and 3 translational. Although the sensitivity field was static, the motion within the non-uniform sensitivity field induces bias field inconsistency between slices.

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
3.
Fig. 3

Fig. 3. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

Matrix representations of MR image slice acquisition of two slices, slice i and slice j, accounting for the rigid motion T*, spatially non-uniform bias field , slice selection S*, and 2D downsampling D*.

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
4.
Fig. 7

Fig. 7. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

The normalized energy function plotted against the gestational age, before and after the bias field inconsistency correction. (Black diamond: before correction, white triangle: the first degree correction, white square: the second degree correction.)

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
5.
Fig. 8

Fig. 8. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

The coefficients of variation (CV) in the intermediate zone (A) and in the subplate (B) after the bias field inconsistency correction are plotted against the CV before the correction. The first degree polynomial model is plotted in triangles, and the second in squares.

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
6.
Fig. 6

Fig. 6. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

Plot of root mean square intersection error (RMSIE) versus the coefficient of variation (CV), before (black diamond) and after the first (white triangle) and second (white square) degree bias field inconsistency correction. RMSIE and CV reflect the amount of motion and the amount of imaging artifacts, respectively.

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
7.
Fig. 1

Fig. 1. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

(left) MR image stacks of a human fetal brain, planned and acquired in utero in axial, sagittal and orientations. (right) A full 3D volume of the fetal brain is reconstructed from the 2D slice image stacks, after the motion of the local rigid anatomy of the fetal head between each slice was compensated.

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
8.
Fig. 9

Fig. 9. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

The intensity profiles along the intersection lines in Fig. 2(A) with the bias field inconsistency correction, plotted against location along the intersection. The intensity profile of the axial slice (left panel in Fig. 2(A)) is in a thick solid line, and the coronal slice (right panel in Fig. 2(A)) in a thick dashed line. The corresponding bias field correction term bc is plotted in thin lines.

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
9.
Fig. 2

Fig. 2. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

(A) An axial slice (left panel) and a coronal slice (right panel) with different bias field strength, displayed in the same contrast and scale. The intersection lines of the slice pair are drawn, with markers for relative locations. (B) The intensity profiles along the intersection lines in (A), plotted against relative locations. The intensity profile of the axial slice (left panel in (A)) is in a solid line, and the coronal slice (right panel in (A)) in a dashed line.

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.
10.
Fig. 10

Fig. 10. From: Bias Field Inconsistency Correction of Motion-Scattered Multislice MRI for Improved 3D Image Reconstruction.

The uncorrected 3D reconstruction of one of the subjects (GA=24.14 weeks) is viewed in axial (A) and coronal (D) perspectives. The same uncorrected 3D reconstruction is viewed with higher intensity contrast in (B,E) to visualize subtle local bias field inconsistency, particularly within the subplate (SP) and the intermediate zone (IZ). The bias field inconsistency corrected (using the second degree model) 3D reconstruction is viewed with high image contrast in (C,F). Panels (G,I) are the division of the uncorrected image (B,E) by the corrected image (C,F). Panels (H,J) demonstrates the contribution of slices in terms of sampling density. (White arrows: SP-IZ boundary, black arrows: bright striated regions)

Kio Kim, et al. IEEE Trans Med Imaging. ;30(9):1704-1712.

Display Settings:

Items per page

Supplemental Content

Recent activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...
Write to the Help Desk