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Feasibility of Application of Sensitivity Encoding to the Breath-Hold T2-Weighted Turbo Spin-Echo Sequence for Evaluation of Focal Hepatic Tumors

Young Kon Kim1, Chong Soo Kim1, Gyung Ho Chung1, Su Bin Jeon1 and Jeong Min Lee2

1 Department of Diagnostic Radiology, Chonbuk National University Hospital and Medical School, Jeonju, South Korea.
2 Department of Diagnostic Radiology, Seoul National University College of Medicine and Institute of Radiation Medicine, Seoul National University Medical School Research Center, Seoul, South Korea.



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  		Fig. 1A. —52-year-old man with liver metastases. Breath-hold turbo spin-echo (BHTSE) T2-weighted image shows suspicious focal lesion in right hepatic lobe (arrow).

 


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  		Fig. 1B. —52-year-old man with liver metastases. BHTSE T2-weighted image with sensitivity encoding (SENSE) using same parameters as A shows suspicious lesion in right hepatic lobe (arrow).

 


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  		Fig. 1C. —52-year-old man with liver metastases. BHTSE T2-weighted image with SENSE using increased matrix and reduced echotrain length shows definitive mild increase in signal intensity of lesion (arrow).

 


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  		Fig. 2A. —40-year-old-woman with hepatic hemangioma. Breath-hold turbo spin-echo (BHTSE) T2-weighted image shows bright high signal intensity of lesion (arrow) in liver segment V. Motion artifact and marginal blurring of liver lesion are noted.

 


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  		Fig. 2B. —40-year-old-woman with hepatic hemangioma. BHTSE T2-weighted image with sensitivity encoding (SENSE) using same parameters as A shows bright high signal intensity of the lesion (arrow) with similar contrast as in A. Motion artifact and marginal blurring of lesion are reduced compared with A.

 


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  		Fig. 2C. —40-year-old-woman with hepatic hemangioma. BHTSE T2-weighted image with SENSE using increased matrix and reduced echotrain length shows bright high signal intensity of lesion (arrow) with similar contrast to A and B. Motion artifact and marginal blurring of lesion are reduced compared with A.

 


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  		Fig. 3A. —61-year-old man with hepatocellular carcinoma. Breath-hold turbo spin-echo (BHTSE) T2-weighted image shows heterogeneous mildly increased signal intensity of mass (arrows) in the hepatic dome. Marked motion artifacts are noted.

 


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  		Fig. 3B. —61-year-old man with hepatocellular carcinoma. BHTSE T2-weighted image with sensitivity encoding (SENSE) using same parameters as A shows increased resolution of hepatic mass (arrows) compared with A. Motion artifacts are still present but reduced compared with A.

 


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  		Fig. 3C. —61-year-old man with hepatocellular carcinoma. BHTSE T2-weighted image with SENSE using increased matrix and reduced echo-train length shows hepatic mass (arrows) with highest contrast among three images. Motion artifacts are still present but are reduced compared with A.

 


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  		Fig. 4A. —44-year-old man with multiple hepatocellular carcinomas. Breath-hold turbo spin-echo (BHTSE) T2-weighted image shows multiple mildly increased signal intensity of masses (arrows). But small masses are not definitive because of lower contrast and motion artifact.

 


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  		Fig. 4B. —44-year-old man with multiple hepatocellular carcinomas. BHTSE T2-weighted image with sensitivity encoding (SENSE) using same parameters as A shows multiple mildly increased signal intensity of masses (arrows). Small mass is shown more clearly than in A. Motion artifacts are reduced compared with A.

 


View larger version (124K):

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  		Fig. 4C. —44-year-old man with multiple hepatocellular carcinomas. BHTSE T2-weighted image with SENSE using increased matrix and reduced echotrain length shows multiple mildly increased signal intensity of masses (arrows) with highest contrast and resolution of the three images.

 

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