Automatic determination of the newborn's femoral head from three-dimensional ultrasound image data

1997 ◽  
pp. 545-556
Author(s):  
Heinrich M. Overhoff ◽  
Djordje Lazovic ◽  
Jörg Franke ◽  
Ute von Jan
Keyword(s):  
Femoral Head ◽  
Three Dimensional ◽  
Ultrasound Image ◽  
Image Data ◽  
Automatic Determination

scholarly journals Automatic determination of an anatomical coordinate system for a three-dimensional model of the human patella

2013 ◽  
Vol 46 (12) ◽  
pp. 2093-2096 ◽  
Author(s):  
Michael J. Rainbow ◽  
Daniel L. Miranda ◽  
Roy T.H. Cheung ◽  
Joel B. Schwartz ◽  
Joseph J. Crisco ◽  
...  
Keyword(s):  
Coordinate System ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Automatic Determination ◽  
Three Dimensional Model

J0230102 Automatic Determination of Three-Dimensional Tooth Axis Using Cone-Beam CT

2015 ◽  
Vol 2015 (0) ◽  
pp. _J0230102--_J0230102-
Author(s):  
Makoto SAKAMOTO ◽  
Sachiko HAYASHI-SAKAI ◽  
Koichi KOBAYASHI ◽  
Hideaki ENDO
Keyword(s):  
Cone Beam Ct ◽  
Three Dimensional ◽  
Cone Beam ◽  
Automatic Determination ◽  
Tooth Axis

scholarly journals Automatic determination of anatomical coordinate systems for three-dimensional bone models of the isolated human knee

2010 ◽  
Vol 43 (8) ◽  
pp. 1623-1626 ◽  
Author(s):  
Daniel L. Miranda ◽  
Michael J. Rainbow ◽  
Evan L. Leventhal ◽  
Joseph J. Crisco ◽  
Braden C. Fleming
Keyword(s):  
Three Dimensional ◽  
Coordinate Systems ◽  
Automatic Determination ◽  
Human Knee

Conformation of Ribosomes from Escherichia Coli

1974 ◽  
Vol 32 ◽  
pp. 210-211
Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins
Keyword(s):  
Binding Sites ◽  
Ribosomal Proteins ◽  
Fluorescent Dyes ◽  
Protein Biosynthesis ◽  
Three Dimensional ◽  
Spatial Arrangement ◽  
Dimensional Structure ◽  
Complete Understanding ◽  
And Function

The present knowledge of the three-dimensional structure of ribosomes is far too limited to enable a complete understanding of the various roles which ribosomes play in protein biosynthesis. The spatial arrangement of proteins and ribonuclec acids in ribosomes can be analysed in many ways. Determination of binding sites for individual proteins on ribonuclec acid and locations of the mutual positions of proteins on the ribosome using labeling with fluorescent dyes, cross-linking reagents, neutron-diffraction or antibodies against ribosomal proteins seem to be most successful approaches. Structure and function of ribosomes can be correlated be depleting the complete ribosomes of some proteins to the functionally inactive core and by subsequent partial reconstitution in order to regain active ribosomal particles.

Information and estimation in image processing

1987 ◽  
Vol 45 ◽  
pp. 14-17
Author(s):  
B. Roy Frieden
Keyword(s):  
Image Processing ◽  
Optical System ◽  
Large Amplitude ◽  
Communication Theory ◽  
Image Data ◽  
Direct Approach ◽  
Ill Posed

Despite the skill and determination of electro-optical system designers, the images acquired using their best designs often suffer from blur and noise. The aim of an “image enhancer” such as myself is to improve these poor images, usually by digital means, such that they better resemble the true, “optical object,” input to the system. This problem is notoriously “ill-posed,” i.e. any direct approach at inversion of the image data suffers strongly from the presence of even a small amount of noise in the data. In fact, the fluctuations engendered in neighboring output values tend to be strongly negative-correlated, so that the output spatially oscillates up and down, with large amplitude, about the true object. What can be done about this situation? As we shall see, various concepts taken from statistical communication theory have proven to be of real use in attacking this problem. We offer below a brief summary of these concepts.

High-speed brightfield 3-D imaging and 3-D image analysis of thick and overlapped cell clusters in cytological preparations

1994 ◽  
Vol 52 ◽  
pp. 218-219
Author(s):  
Robert W. Mackin
Keyword(s):  
Image Analysis ◽  
High Speed ◽  
Three Dimensional ◽  
Image Data ◽  
Ccd Camera ◽  
Objective Lens ◽  
Array Processor ◽  
Vaginal Smears ◽  
Low Contrast ◽  
Computer Controlled

This paper presents two advances towards the automated three-dimensional (3-D) analysis of thick and heavily-overlapped regions in cytological preparations such as cervical/vaginal smears. First, a high speed 3-D brightfield microscope has been developed, allowing the acquisition of image data at speeds approaching 30 optical slices per second. Second, algorithms have been developed to detect and segment nuclei in spite of the extremely high image variability and low contrast typical of such regions. The analysis of such regions is inherently a 3-D problem that cannot be solved reliably with conventional 2-D imaging and image analysis methods.High-Speed 3-D imaging of the specimen is accomplished by moving the specimen axially relative to the objective lens of a standard microscope (Zeiss) at a speed of 30 steps per second, where the stepsize is adjustable from 0.2 - 5μm. The specimen is mounted on a computer-controlled, piezoelectric microstage (Burleigh PZS-100, 68/μm displacement). At each step, an optical slice is acquired using a CCD camera (SONY XC-11/71 IP, Dalsa CA-D1-0256, and CA-D2-0512 have been used) connected to a 4-node array processor system based on the Intel i860 chip.

Sign in / Sign up

Export Citation Format

Share Document