scholarly journals Recovery of missing data in partial geometry PET scanners: Compensation in projection space vs image space

2018 ◽  
Vol 45 (12) ◽  
pp. 5437-5449 ◽  
Author(s):  
Seyedehsamaneh Shojaeilangari ◽  
C. Ross Schmidtlein ◽  
Arman Rahmim ◽  
Mohammad Reza Ay
Keyword(s):  
Missing Data ◽  
Image Space ◽  
Partial Geometry ◽  
Pet Scanners

High Resolution Specimen Area Imaged Under Negligible Field Aberrations

1970 ◽  
Vol 28 ◽  
pp. 540-541 ◽  
Author(s):  
T. Yanaka ◽  
K. Shirota
Keyword(s):  
High Resolution ◽  
Field Distribution ◽  
Image Space ◽  
Beam Deflection ◽  
Objective Lens ◽  
Resolution Limit ◽  
Leakage Flux ◽  
Specimen Area ◽  
Points Of View ◽  
Aberration Theory

It is significant to note field aberrations (chromatic field aberration, coma, astigmatism and blurring due to curvature of field, defined by Glaser's aberration theory relative to the Blenden Freien System) of the objective lens in connection with the following three points of view; field aberrations increase as the resolution of the axial point improves by increasing the lens excitation (k2) and decreasing the half width value (d) of the axial lens field distribution; when one or all of the imaging lenses have axial imperfections such as beam deflection in image space by the asymmetrical magnetic leakage flux, the apparent axial point has field aberrations which prevent the theoretical resolution limit from being obtained.

MISSING DATA

1979 ◽  
Vol 24 (8) ◽  
pp. 670-670
Author(s):  
FRANZ R. EPTING ◽  
ALVIN W. LANDFIELD
Keyword(s):  
Missing Data

MORE MISSING DATA

1979 ◽  
Vol 24 (12) ◽  
pp. 1058-1058
Author(s):  
AL LANDFIELD ◽  
FRANZ EPTING
Keyword(s):  
Missing Data

Impact of missing data in a weight control trial

2013 ◽  
Author(s):  
Samantha Minski ◽  
Kristen Medina ◽  
Danielle Lespinasse ◽  
Stacey Maurer ◽  
Manal Alabduljabbar ◽  
...  
Keyword(s):  
Missing Data ◽  
Weight Control
Sign in / Sign up

Export Citation Format

Share Document