Fast T2-weighted liver MR imaging: comparison among breath-hold turbo-spin-echo, HASTE, and inversion recovery (IR) HASTE sequences
| Autor: | G. Laub, D. Chien, Yong Ho Auh, Y. K. Jeong, Pyo Nyun Kim, J. C. Kim, Moon-Gyu Lee, E. M. Kang |
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| Rok vydání: | 2000 |
| Předmět: |
Adult
Male Adolescent Image quality Urology Inversion recovery Diagnosis Differential Lesion medicine Humans Radiology Nuclear Medicine and imaging Aged Retrospective Studies Radiological and Ultrasound Technology medicine.diagnostic_test Lesion detection Echo-Planar Imaging business.industry Liver Diseases Respiration Liver Neoplasms Gastroenterology Magnetic resonance imaging General Medicine Middle Aged Fast spin echo Mr imaging Liver Female medicine.symptom Nuclear medicine business T2 weighted |
| Zdroj: | Abdominal Imaging. 25:93-99 |
| ISSN: | 1432-0509 0942-8925 |
| DOI: | 10.1007/s002619910019 |
| Popis: | Background: To evaluate the diagnostic efficacy of fast T2-weighted magnetic resonance (MR) imaging sequences on image quality, hepatic lesion detection, and lesion conspicuity. Methods: Three breath-hold, fast T2-weighted sequences with turbo-spin-echo (TSE), half-Fourier acquisition single-shot TSE (HASTE), and inversion recovery (IR) HASTE techniques were examined for 43 lesions in 20 consecutive patients. Evaluation was performed qualitatively on image quality and lesion detectability and quantitatively on lesion conspicuity by using lesion/liver signal-intensity and contrast-to-noise ratios. Results: Artifacts were significantly less present on the HASTE sequence (p < 0.01). Both TSE and HASTE sequences detected 39 lesions (91% each); the IR HASTE sequence detected 37 (86%). IR HASTE sequence showed a significantly higher signal-intensity ratio than did the others (p < 0.01). Conclusions: Breath-hold TSE versus breath-hold HASTE or IR HASTE is still the most robust sequence in lesion detection, image quality, and lesion conspicuity. However, the HASTE sequence offers good lesion detection and image quality, and the IR HASTE has a better signal-intensity ratio. |
| Databáze: | OpenAIRE |
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