Tomography for properties of materials that bend rays: a tutorial
Conference
·
· Appl. Opt.; (United States)
OSTI ID:6984310
When tomography is performed with electromagnetic or acoustical radiation, refraction may cause sufficient bending of the probing rays that ordinary reconstruction algorithms, which are based on the assumption of straight rays, do not yield accurate results. The resulting problem of reconstructing the refractive-index distribution of an object from time of flight or optical path length data is nonlinear. Various approaches to solving this problem approximately have been proposed and subjected to modest numerical studies. These include iterative algorithms and techniques based on linearized inverse scattering theory. One exception is the case of axisymmetric objects for which an exact solution is known.
- Research Organization:
- Univ. of Michigan, Ann Arbor
- OSTI ID:
- 6984310
- Conference Information:
- Journal Name: Appl. Opt.; (United States) Journal Volume: 24:23
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
07 ISOTOPE AND RADIATION SOURCES
070204* -- Radiation Sources-- Industrial Uses
Radiometric
550602 -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALGORITHMS
ASYMMETRY
AXIAL SYMMETRY
BEAM OPTICS
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
IMAGE PROCESSING
INDUSTRIAL RADIOGRAPHY
MATERIALS TESTING
MATHEMATICAL LOGIC
NONDESTRUCTIVE TESTING
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PROCESSING
REFRACTIVITY
RESOLUTION
SCATTERING
SPATIAL RESOLUTION
SYMMETRY
TESTING
TOMOGRAPHY
ULTRASONOGRAPHY
070204* -- Radiation Sources-- Industrial Uses
Radiometric
550602 -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALGORITHMS
ASYMMETRY
AXIAL SYMMETRY
BEAM OPTICS
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
IMAGE PROCESSING
INDUSTRIAL RADIOGRAPHY
MATERIALS TESTING
MATHEMATICAL LOGIC
NONDESTRUCTIVE TESTING
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PROCESSING
REFRACTIVITY
RESOLUTION
SCATTERING
SPATIAL RESOLUTION
SYMMETRY
TESTING
TOMOGRAPHY
ULTRASONOGRAPHY