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Titolo:
MORPHOLOGICAL IMAGE-PROCESSING OPERATORS - REDUCTION OF PARTIAL VOLUME EFFECTS TO IMPROVE 3D VISUALIZATION BASED ON CT DATA
Autore:
BEIER J; BITTNER RC; HOSTEN N; TROGER J; FELIX R;
Indirizzi:
HUMBOLDT UNIV,STRAHLEN & POLIKLIN,FAK MED,CAMPUS VIRCHOW KLINIKUM,AUGUSTENBURGER PL 1 D-13353 BERLIN GERMANY
Titolo Testata:
Radiologe
fascicolo: 10, volume: 38, anno: 1998,
pagine: 860 - 866
SICI:
0033-832X(1998)38:10<860:MIO-RO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
GER
Soggetto:
CONTRAST FLOW MEASUREMENTS; COMPUTED-TOMOGRAPHY; PROTON SPECTROSCOPY; MR-ANGIOGRAPHY; INTERPOLATION; SCANS;
Keywords:
MORPHOLOGICAL OPERATORS; PARTIAL VOLUME EFFECT; EROSION; DILATION; IMAGE PROCESSING; 3D-CT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
J. Beier et al., "MORPHOLOGICAL IMAGE-PROCESSING OPERATORS - REDUCTION OF PARTIAL VOLUME EFFECTS TO IMPROVE 3D VISUALIZATION BASED ON CT DATA", Radiologe, 38(10), 1998, pp. 860-866

Abstract

Aim: The quality of segmentation and three-dimensional reconstructionof anatomical structures in tomographic slices is often impaired by disturbances due to partial volume effects (PVE). The potential for artefact reduction by use of the morphological image processing operators(MO) erosion and dilation is investigated. Design: The CT examinations of 31 patients with pathological alterations in lung or brain were segmented using automatic region growing and the MO were applied in a different number of iterations. The processed regions were 3D-reconstructed (shaded surface display, MIP,volume rendering) and the occurrenceof PVE-related artefacts using the signal-to-background ratio (SBR) prior to and after MO application was compared. Results: For all patients under review,the artefacts caused by PVE were significantly reducedby erosion (lung: mean SBRpre=1.67, SBRpost=4.83; brain: SBRpre=1.06,SBRpost=1.29) even with only a small number of iterations. Region dilation was applied to integrate further structures(e.g. at tumor borders) into a configurable neighbourhood for segmentation and quantitativeanalysis. Conclusions:The MO represent an efficient approach for the reduction of PVE artefacts in 3D-CT reconstructions and allow optimized visualization of individual objects.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/04/20 alle ore 03:47:49