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Titolo:
Head and neck lesions: Characterization with diffusion-weighted echo-planar MR imaging
Autore:
Wang, JC; Takashima, S; Takayama, F; Kawakami, H; Saito, A; Matsushita, T; Momose, M; Ishiyama, T;
Indirizzi:
Shinshu Univ, Sch Med, Dept Radiol, Matsumoto, Nagano 3908621, Japan Shinshu Univ Matsumoto Nagano Japan 3908621 sumoto, Nagano 3908621, Japan Shinshu Univ, Sch Med, Dept Otolaryngol, Matsumoto, Nagano 3908621, Japan Shinshu Univ Matsumoto Nagano Japan 3908621 sumoto, Nagano 3908621, Japan
Titolo Testata:
RADIOLOGY
fascicolo: 3, volume: 220, anno: 2001,
pagine: 621 - 630
SICI:
0033-8419(200109)220:3<621:HANLCW>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN-BRAIN; STROKE; TUMOR;
Keywords:
head and neck neoplasms; head and neck neoplasms, MR; magnetic resonance (MR), diffusion study; magnetic resonance (MR), echo planar;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Takashima, S Shinshu Univ, Sch Med, Dept Radiol, 3-1-1 Asahi, Matsumoto, Nagano 3908621, Japan Shinshu Univ 3-1-1 Asahi Matsumoto Nagano Japan 3908621 Japan
Citazione:
J.C. Wang et al., "Head and neck lesions: Characterization with diffusion-weighted echo-planar MR imaging", RADIOLOGY, 220(3), 2001, pp. 621-630

Abstract

PURPOSE: To evaluate whether apparent diffusion coefficients (ADCs) calculated from diffusion-weighted echo-planar magnetic resonance (MR) images canbe used to characterize head and neck lesions. MATERIALS AND METHODS: Diffusion-weighted echo-planar MR imaging was performed with a 1.5-T MR unit in 97 head and neck lesions in 97 patients. Images were obtained with a diffusion-weighted factor, factor b, of 0, 500, and 1,000 sec/mm(2) and an ADC map was constructed. The ADCs of lesions, cerebrospinal fluid, and spinal cord were calculated. RESULTS: Acceptable images for ADC measurement were obtained in 81 (84%) patients. The mean ADC of malignant lymphomas, (0.66 +/- 0.17[SD]) X 10(-3) mm(2)/sec (n = 13), was significantly smaller (P < .001) than that of carcinomas. The mean ADC of carcinomas, (1.13 +/- 0.43) X 10(-3) mm(2)/sec (n = 36), was significantly smaller (P = .002) than that of benign solid tumors. The mean ADC of benign solid tumors, (1.56 +/- 0.51) X 10(-3) mm(2)/sec (n= 22), was significantly smaller (P = .035) than that of benign cystic lesions, (2.05 +/- 0.62) X 10(-3) mm(2)/sec (n = 10). No significant differences were seen in the mean ADC of cerebrospinal fluid and of spinal cord among four groups of lesions. When an ADC smaller than 1.22 X 10(-3) mm(2)/sec was used for predicting malignancy, the highest accuracy of 86%, with 84% sensitivity and 91% specificity, was obtained. CONCLUSION: Measurement of ADCs may be used to characterize head and neck lesions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 09:03:03