Department of Medical Imaging, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, HA7 4LP, UK.
Clinic of Radiology and Nuclear Medicine, University Hospital Basel, University of Basel, Petersgraben 4, 4031, Basel, Switzerland.
Skeletal Radiol. 2019 Dec;48(12):1861-1874. doi: 10.1007/s00256-019-03271-4. Epub 2019 Jul 15.
Dixon sequences are established as a reliable MRI technique that can be used for problem-solving in the assessment of bone marrow lesions. Unlike other fat suppression methods, Dixon techniques rely on the difference in resonance frequency between fat and water and in a single acquisition, fat only, water only, in-phase and out-of-phase images are acquired. This gives Dixon techniques the unique ability to quantify the amount of fat within a bone lesion, allowing discrimination between marrow-infiltrating and non-marrow-infiltrating lesions such as focal nodular marrow hyperplasia. Dixon can be used with gradient echo and spin echo techniques, both two-dimensional and three-dimensional imaging. Another advantage is its rapid acquisition time, especially when using traditional two-point Dixon gradient echo sequences. Overall, Dixon is a robust fat suppression method that can also be used with intravenous contrast agents. After reviewing the available literature, we would like to advocate the implementation of additional Dixon sequences as a problem-solving tool during the assessment of bone marrow pathology.
狄克逊序列是一种可靠的 MRI 技术，可用于解决骨髓病变评估中的问题。与其他脂肪抑制方法不同，狄克逊技术依赖于脂肪和水之间的共振频率差异，并且在单个采集过程中，仅采集脂肪、水、同相和反相图像。这使得狄克逊技术具有定量骨病变内脂肪量的独特能力，从而能够区分骨髓浸润性和非骨髓浸润性病变，例如局灶性结节状骨髓增生。狄克逊可与梯度回波和自旋回波技术一起使用，包括二维和三维成像。另一个优点是其快速采集时间，尤其是在使用传统的两点狄克逊梯度回波序列时。总的来说，狄克逊是一种强大的脂肪抑制方法，也可以与静脉内造影剂一起使用。在回顾了现有文献后，我们主张在评估骨髓病理学时将附加的狄克逊序列作为一种解决问题的工具。
