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- W2009554489 abstract "The purpose of this study was to assess the degree of conspicuity and amount of field distortion caused by a biopsy needle designed specifically for use in MRI studies. Toward this, a number of pulse sequences including spin and field echo were used. Parameters such as field of view, strength of read gradient, direction of read gradient, echo time and slice thickness were varied. The effect of these manipulations on needle visualization was studied. Partial voluming errors with thicker slices decreased needle conspicuity. Smaller field of view improved needle visualization as a result of magnification effect. Shallow read gradient strengths also increased needle conspicuity. Increased image artifacts were noted on field-echo sequences compared to spin echo. This effect increased with longer echo times. This reflect T2∗ effects on field-echo images." @default.
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- W2009554489 date "1989-09-01" @default.
- W2009554489 modified "2023-10-14" @default.
- W2009554489 title "Pulse sequence optimization for use with a biopsy needle in MRI" @default.
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- W2009554489 doi "https://doi.org/10.1016/0730-725x(89)90415-3" @default.
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