Sensor fusion in image reconstruction

Journal Article · Sun Mar 31 23:00:00 EST 1991 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/23.289375· OSTI ID:6200568

Chen, C T; Ouyang, X; Ordonez, C; Metz, C E ^[1]; Wong, W ^[2]; Hu, X ^[3]; Johnson, V E ^[4]

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1. Chicago Univ., IL (United States). Dept. of Radiology
2. Chicago Univ., IL (United States). Dept. of Statistics
3. Dept. of Radiology, Univ. of Minnesota (US)
4. Inst. of Statistics and Decision Sciences, Duke Univ. (US)

Various medical imaging modalities offer different but often complementary information. For example, x-ray computed tomography (CT) and magnetic resonance (MR) images provide structural information with high spatial resolution; while positron emission tomography (PET) and single-photon emission computed tomography (SPECT) give functional information with less desirable image quality. Integration of images from multiple modalities opens new avenues for developing innovative image reconstruction algorithms that can provide improved image quality. This paper reports on a Bayesian method for eCT image reconstruction developed to incorporate a priori information derived from the spatially-correlated CT and MR images. These anatomic maps, showing boundaries between regions that exhibit distinctly different characteristics, can be incorporated in the Bayesian method, this improving the spatial resolution and noise properties. The correlated structural information can be used also as templates for deriving correction factors for the effect of photon attenuation, this improving the quantitative accuracy and noise properties. Results from computer simulation studies show significant improvements in image quality.

• OSTI ID: 6200568
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 38:2; ISSN 0018-9499; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
COMPUTERIZED SIMULATION
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
EQUIPMENT
IMAGE PROCESSING
MAGNETIC RESONANCE
MATHEMATICAL LOGIC
POSITRON COMPUTED TOMOGRAPHY
PROCESSING
RESOLUTION
RESONANCE
SIMULATION
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
SPATIAL RESOLUTION
TECHNOLOGY ASSESSMENT
TOMOGRAPHY
X-RAY EQUIPMENT