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Titolo:
TAGGED MR-IMAGING IN A DEFORMING PHANTOM - PHOTOGRAPHIC VALIDATION
Autore:
MOORE CC; REEDER SB; MCVEIGH ER;
Indirizzi:
JOHNS HOPKINS UNIV,SCH MED,DEPT BIOMED ENGN,407 TRAYLOR BLDG,720 RUTLAND AVE BALTIMORE MD 21205 JOHNS HOPKINS UNIV,SCH MED,DEPT BIOMED ENGN BALTIMORE MD 21205 JOHNS HOPKINS UNIV,SCH MED,DEPT RADIOL BALTIMORE MD 21205
Titolo Testata:
Radiology
fascicolo: 3, volume: 190, anno: 1994,
pagine: 765 - 769
SICI:
0033-8419(1994)190:3<765:TMIADP>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOTION;
Keywords:
MAGNETIC RESONANCE (MR), CINE STUDY; MAGNETIC RESONANCE (MR), MOTION STUDIES; PHANTOMS; TEST OBJECTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
C.C. Moore et al., "TAGGED MR-IMAGING IN A DEFORMING PHANTOM - PHOTOGRAPHIC VALIDATION", Radiology, 190(3), 1994, pp. 765-769

Abstract

PURPOSE: To validate cine magnetic resonance (MR) image tagging measurements of a deforming object by means of a precise photographic method. MATERIALS AND METHODS: A piece of silicone rubber that acted as a phantom was stretched in a cyclical fashion inside a plastic clamp driven by a respirator pump. Deformation as a function of time was measured with a rapid gradient-echo cine tagging sequence and with sequentialstrobo-scopic photographs. Deformations from 1.0 to 1.2 (0% to 20% stretch) in the readout direction were measured over a 7-cm region of the phantom, which had a maximum standard error of +/- 0.001 with photography and a maximum standard error of +/- 0.003 with MR imaging. RESULTS: The deformation versus time values measured with MR imaging had a standard error of 0.002 about a straight line fit to the photographic deformation versus time data. These results demonstrate that the MR imaging deformation estimates were accurate and precise. CONCLUSION: Thevalidated tagging method can now be used to evaluate MR imaging motion estimation techniques.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 13:38:21