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Titolo:
Differentiation of serous and purulent fluids in vitro and in vivo by means of diffusion-weighted MR imaging.
Autore:
Spuntrup, E; Bucker, A; Adam, G; van Vaals, JJ; Gunther, RW;
Indirizzi:
Rhein Westfal TH Aachen, Radiol Diagnost Klin, Med Einrichtungen, D-52057 Aachen, Germany Rhein Westfal TH Aachen Aachen Germany D-52057 , D-52057 Aachen, Germany Philips Med Syst, NL-5680 Best, Netherlands Philips Med Syst Best Netherlands NL-5680 yst, NL-5680 Best, Netherlands
Titolo Testata:
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
fascicolo: 1, volume: 173, anno: 2001,
pagine: 65 - 71
SICI:
1438-9029(200101)173:1<65:DOSAPF>2.0.ZU;2-9
Fonte:
ISI
Lingua:
GER
Soggetto:
PATHOLOGICAL COMPRESSION FRACTURES; SELF-DIFFUSION; BRAIN; ARTIFACTS; BENIGN; WATER; MODEL;
Keywords:
diffusion-weighted magnetic resonance imaging; abscess; seroma;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Spuntrup, E Rhein Westfal TH Aachen, Radiol Diagnost Klin, Med Einrichtungen, Pauwelsstr 30, D-52057 Aachen, Germany Rhein Westfal TH Aachen Pauwelsstr 30 Aachen Germany D-52057
Citazione:
E. Spuntrup et al., "Differentiation of serous and purulent fluids in vitro and in vivo by means of diffusion-weighted MR imaging.", ROFO-F RONT, 173(1), 2001, pp. 65-71

Abstract

Aim: The aim of this study was to test the feasibility for differentiationof serous fluid collections and abscess fluid with diffusion-weighted imaging and to compare three different diffusion sequences. Material and Methods: Thirteen puncture samples (6 serous, 7 purulent) and 19 patients with either serous fluid collections (n=12) or abscesses (n=7)were examined with diffusion-weighted spin-echo (SE), stimulated-echo (STE), and fat-suppressedSE (SE-SPIR) sequences. For in vitro studies 4 different b-factors (0, 87,355, 798 s/mm(2) in SE and SE-SPIR and 0, 51, 204, 460 s/mm(2) in STE) were chosen and the apparent diffusion coefficient (ADC) was calculated. For in vivo measurements identical sequences with two b-factors (0,598 s/mm(2) in SE and SE-SPIR and 0,360 s/mm(2) in STE) were applied and the normalized signal attenuation was calculated. A navigator-echo technique and peripheral pulse triggering was used for motion artifact reduction. Results: The in vitro study yielded an ADC of serous fluid, which was close to that of freewater, whereas for purulent fluid a significantly lower ADC was calculated. During in vivo examinations, serous fluids showed a strong signal attenuation (down to 22-32% of basic value) compared to a minor signal attenuationin purulent fluids (down to 86-94% of basic value) (p<0.05). Conclusions: In summary, with all three investigated diffusion schemes serous and purulent fluids can be clearly differentiated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 00:47:56