T2-weighted MRI of the female pelvis: Comparison of breath-hold fast-recovery fast spin-echo and nonbreath-hold fast spin-echo sequences

Citation
T. Masui et al., T2-weighted MRI of the female pelvis: Comparison of breath-hold fast-recovery fast spin-echo and nonbreath-hold fast spin-echo sequences, J MAGN R I, 13(6), 2001, pp. 930-937
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging
Journal title
JOURNAL OF MAGNETIC RESONANCE IMAGING
ISSN journal
1053-1807 → ACNP
Volume
13
Issue
6
Year of publication
2001
Pages
930 - 937
Database
ISI
SICI code
1053-1807(200106)13:6<930:TMOTFP>2.0.ZU;2-G
Abstract
In 49 patients who had pelvic abnormalities, breath-hold T2-weighted fast-r ecovery (FR)-fast spin-echo (FSE) (imaging time = 24 sec) and nonbreath-hol d FSE MR images (2 min 8 sec) were compared qualitatively (on a four-point scale) and quantitatively (using signal-to-noise ratios (SNRs) and contrast ratios (\ SIs of the lesions-SIs of the myometrium \ /SIs of the myometriu m)). Motion artifacts were reduced on breath-hold FR-FSE (3.8:3.2 = breath- hold FSE:nonbreath-hold FSE, P < 0.01) and image quality was comparable (3. 8:3.7, NS). In all patients, pathology (leiomyoma [N = 26], adenomyosis [N = 10], endometrial carcinoma [N = 8], and ovarian cystic lesions [N = 21]) was recognized with comparable lesion conspicuity (3.8:3.7, NS) and better delineation of the structures (3.9:3.6, P < 0.05) on the FR-FSE images. The re was no significant difference in contrast ratios, although SNRs (e.g., m yometrium 18.3:25.8, P < 0.01) were better and the uterine zonal anatomy wa s recognized better on the nonbreath-hold FSE (3.4:3.7, P < 0.05). These di fferences did not affect the diagnosis. Breath-hold FR-FSE provides the ben efits of motionless Imaging and a short examination time, although lower SN Rs were noted. J. Magn. Reson. Imaging 2001;13:930-937. (C) 2001 Wiley-Liss , Inc.