Dean K I, Majurin M L, Komu M
Department of Diagnostic Radiology, University Central Hospital, Turku, Finland.
Acta Radiol. 1994 May;35(3):258-61.
The influence of age on the relaxation times of normal breast parenchyma and its surrounding fatty tissue were evaluated, and the variations during a normal menstrual cycle were analyzed using an ultra low field 0.02 T imager. Thirty-nine healthy volunteers aged 21 to 59 years were examined to determine T1 and T2 relaxation times, and 8 of these volunteers were studied once weekly during one menstrual cycle. The only significant trend was an increase in the T2 of breast parenchyma with increasing age. During the menstrual cycle there was a slight but insignificant (p = 0.10) increase in T1 of the breast parenchyma values during the latter half of the menstrual cycle, and a corresponding increase in T2 values between the 2nd and 3rd weeks of the menstrual cycle, which was significant (p = 0.003).
评估了年龄对正常乳腺实质及其周围脂肪组织弛豫时间的影响，并使用超低场0.02T成像仪分析了正常月经周期中的变化。对39名年龄在21至59岁的健康志愿者进行了检查，以确定T1和T2弛豫时间，其中8名志愿者在一个月经周期内每周检查一次。唯一显著的趋势是乳腺实质的T2随年龄增长而增加。在月经周期中，月经周期后半期乳腺实质T1值有轻微但不显著（p = 0.10）的增加，在月经周期第2周和第3周之间T2值有相应增加，这一增加是显著的（p = 0.003）。
