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2006•Journal of Practical Medical TechniquesRequires access

The Role of Dynamic-enhanced MRI in the Diagnosis of Pituitary Microadenoma

Zhong Lan-sheng

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Abstract

Objective To determine whether dynamic-enhanced MR imaging is superior to standard MR imaging after contrast administration for detecting pituitary microadenoma. Methods 50 cases of clinically suspected microadenoma were examined with dynamic-enhanced MR imaging, and standard imaging with unenhanced and contrast-enhanced spin-echo sequences were obtained. The threesequences were evaluated retrospectively and graded for gland-lesion contrast conspicuity, lesion, homogeneity, and delineation of lesion margin. Results The positive rate of microadenoma was 94% for dynamic-enhanced MRI group and 72% for routinely contrast-enhanced group. Conclusion Dynamic-enhanced MRI is the best method for the diagnosis of pituitary microadenoma.

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What this paper is about

Objective To determine whether dynamic-enhanced MR imaging is superior to standard MR imaging after contrast administration for detecting pituitary microadenoma. Methods 50 cases of clinically suspected microadenoma were examined with dynamic-enhanced MR imaging, and standard imaging with unenhanced and contrast-enhanced spin-echo sequences were obtained. The threesequences were evaluated retrospectively and graded for gland-lesion contrast conspicuity, lesion, homogeneity, and delineation of lesion margin. Results The positive rate of microadenoma was 94% for dynamic-enhanced MRI group and 72% for routinely contrast-enhanced group. Conclusion Dynamic-enhanced MRI is the best method for the diagnosis of pituitary microadenoma.

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Available abstract

Objective To determine whether dynamic-enhanced MR imaging is superior to standard MR imaging after contrast administration for detecting pituitary microadenoma. Methods 50 cases of clinically suspected microadenoma were examined with dynamic-enhanced MR imaging, and standard imaging with unenhanced and contrast-enhanced spin-echo sequences were obtained. The threesequences were evaluated retrospectively and graded for gland-lesion contrast conspicuity, lesion, homogeneity, and delineation of lesion margin. Results The positive rate of microadenoma was 94% for dynamic-enhanced MRI group and 72% for routinely contrast-enhanced group. Conclusion Dynamic-enhanced MRI is the best method for the diagnosis of pituitary microadenoma.

Key concepts: Medicine, Lesion, Dynamic contrast, Dynamic contrast-enhanced MRI, Magnetic resonance imaging, Radiology, Contrast (vision), Nuclear medicine

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