The comparison of the efficacy of the single shot spin echo, fiesta, and propeller T 2 - weighted MRI sequences in the detection of focal liver lesions
Abstract
Purpose: The purpose of this study is to compare the signal characteristics of liver lesions and the difference between interpreters in magnetic resonance imaging (MRI) T2-PROPELLER, T2-FIESTA, and T2-SSFSE sequences.
Materials and Methods: This study was performed with upper abdominal MR images examined between January 2014-July 2016 at Adana Numune Training and Research Hospital were included in the study. Liver lesions with a diameter of 5 mm or more were taken into consideration, there was no upper limit on lesion size. Up to 4 lesions were evaluated in patients with more than one liver lesion. Focal liver lesions were categorized into 5 groups according to signal properties. The interpreters blindly evaluated the sequences, without priorly knowing if the patients had liver lesions or not.
Results: 301 lesions were included in the study. 63 (36%) of the patients were males, while 110 (64%) were females. The ages of the patients varied between 19 and 90 years. 40 (13.3%) of the lesions were malignant, while 261 (86.7%) were benign. Of the 301 lesions, 148 (49.2%) were hemangiomas, 90 (29.9%) were cysts, and 32 (10.6%) were metastases. In comparison of signal characteristics of lesions, the intraclass correlation coefficient of the repeated measurement analysis was found to be 0.962.
Conclusion: There was no significant difference in characterizing the signal characteristic of the lesions between the sequences.
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- Referans 1. Karahan OI, Yıkılmaz A, Işın S. Karaciğer solid kitlelerinin renkli doppler ultrasonografi bulguları. İnönü Üniverstesi Tıp Fakültesi Dergisi 2003; 10:139-42.
- Referans 2. Tello R, Fenlon HM, Gagliano T. Prediction rule for characterization of hepatic lesions revealed on MR imaging: estimation of malignancy. AJR, 2001; 176:879-84.
- Referans 3. Bittner RC, Felix R. Magnetic resonance (MR) imaging of the chest: state-of-the-art. Eur Respir J 1998; 11:1392-404.
- Referans 4. Müller NL. Computed tomography and magnetic resonance imaging: past, present and future. Eur Respir J 2002;19:35:3-12.
- Referans 5. Christoph U, Herborn FV, Lauenstein TC. MRI of the Liver: Can True FISP Replace HASTE?. Journal of Magnetic Resonance Imaging 2003; 17:190-6.
- Referans 6. Tang Y, Yamashita Y, Namimoto T, Abe Y, Takahashi M. Liver T2-weighted MR imaging: comparison of fast and conventional half-Fourier single-shot turbo spin-echo, breath-hold turbo spin-echo, and respiratory-triggered turbo spin-echo sequences. Radiology 1997; 203:766-72.
- Referans 7. Foley WD, Kneeland JB, Cates JD. Contrast optimization for the detection of focal hepatic lesions by MR imaging at 1.5 T. AJR, 1987; 149:1155-60.
- Referans 8. Pipe JG. Motion correction with PROPELLER MRI: application to head motion and free-breathing cardiac imaging. Magn Reson Med 1999; 42:963-9.
- Referans 9. Yuusuke H, Hiroyoshi I, Yoji SM. MRI Artifact Reduction and Quality Improvement in the Upper Abdomen with PROPELLERand Prospective Acquisition Correction (PACE) Technique AJR, 2008; 191:1154-8.
- Referans 10. McFarland EG, Mayo-Smith WW, Saini S, Hahn PF, Goldberg MA, Lee MJ. Hepatic hemangiomas and malignant tumors: improved differentiation with heavily T2-weighted conventional spin-echo MR imaging. Radiology 1994; 193:43-7.
