Determining a dimension from a density distribution

Details Determining a dimension from a density distribution Determining a dimension from a density distribution

1996-10-07

1998-05-26

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 382131, A61B 603

Patent

active

057578770

ABSTRACT:
A density distribution of an object to be examined is obtained, for example by X-ray computed tomography or magnetic resonance imaging, and an accurate dimension of a detail of the object is derived from density values of a corresponding relevant detail of the density distribution and density values outside the relevant detail. Preferably, a reduction of a maximum density value of the relevant detail is compensated on the basis of density values outside the relevant detail.

REFERENCES:
patent: 5528644 (1996-06-01), Ogawa et al.
"Technical Optimization of Spiral CT for Depiction of Renal Artery Stenosis: In Vitro Analysis", by James A. Brink et al, Radiology 194 (1995) 157-163.
"Further Investigation and Initial Clinical Use of Advanced CT Display Capability", by William V. Glen et al, Investigative Radiology, vol. 10, Sep./Oct. 1975.
"Image Generation and Display Techniques for CT Scan Data", by William V. Glen et al, Investigative Radiology, vol. 10, Sep./Oct. 1975.

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