垂体磁共振成像：健康志愿者与微腺瘤患者的对比研究
Pituitary gland MR: a comparative study of healthy volunteers and patients with microadenomas.
作者信息
Chong B W, Kucharczyk W, Singer W, George S
机构信息
Department of Radiology, University of Toronto, Faculty of Medicine.
出版信息
AJNR Am J Neuroradiol. 1994 Apr;15(4):675-9.
PURPOSE
To compare the MR appearance of the pituitary glands of healthy volunteers with that of patients with microadenomas.
METHODS
Unenhanced coronal T1-weighted MR of the pituitary gland was performed on 52 healthy adult volunteers and 14 consecutive patients with evidence of pituitary adenomas. The MRs were interpreted in a randomized, blinded fashion. Notation was made of pituitary gland size, symmetry, stalk position, and the gland's signal uniformity.
RESULTS
Focal pituitary gland hypointensities were seen in 20 of 52 volunteers and in all 14 patients. In the volunteers, on average the areas of low signal were smaller and not as dark as in the patient group, but there was some overlap between the two groups. Pituitary gland size, symmetry, and stalk position did not differ between the two groups.
CONCLUSIONS
Focal hypointensities are common incidental MR findings in the healthy population. On average they appear smaller and not as dark as microadenomas.
目的
比较健康志愿者与微腺瘤患者垂体的磁共振成像（MR）表现。
方法
对52名健康成年志愿者和14例有垂体腺瘤证据的连续患者进行垂体的未增强冠状面T1加权磁共振成像检查。磁共振成像以随机、盲法方式解读。记录垂体大小、对称性、柄部位置以及腺体信号均匀性。
结果
52名志愿者中有20名以及所有14例患者均可见垂体局灶性低信号。在志愿者中，低信号区域平均比患者组小且不如患者组暗，但两组之间存在一定重叠。两组之间垂体大小、对称性和柄部位置无差异。
结论
局灶性低信号是健康人群中常见的偶然磁共振成像表现。平均而言，它们比微腺瘤小且暗度不如微腺瘤。
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