Kapelov S R, Teresi L M, Bradley W G, Bucciarelli N R, Murakami D M, Mullin W J, Jordan J E
Memorial MRI Center, Long Beach Memorial Medical Center, CA 90806.
Radiology. 1993 Dec;189(3):901-4. doi: 10.1148/radiology.189.3.8234723.
To demonstrate that T2-weighted fast spin-echo (FSE) imaging with spectroscopic fat saturation (FS-FSE) increases the conspicuity between normal marrow and bone contusions in posttraumatic knees.
Seventy-six magnetic resonance (MR) studies of the knee were prospectively evaluated in 73 consecutive patients with knee pain. Conspicuity of regions of microtrabecular trauma (bone contusions) was evaluated with conventional T2-weighted imaging in the sagittal plane, T2-weighted FSE imaging in the coronal plane, T2-weighted FS-FSE imaging in the sagittal plane, and conventional T1-weighted imaging in the sagittal plane.
Twenty-six foci of bone contusion were identified in 21 knees with the FS-FSE technique. Only 16 foci were demonstrated with conventional T2-weighted imaging. Six of the sites of bone contusion were not demonstrated with the FSE technique alone (without fat saturation). Four of the bone contusions were not seen on T1-weighted images; these sites of bone contusion were substantially more conspicuous on the FS-FSE images. In addition, FS-FSE imaging was more sensitive in demonstrating the extent of microtrabecular trauma.
T2-weighted FS-FSE imaging is a sensitive and rapid method of identifying and assessing the extent of microtrabecular trauma about the knee.
证明采用频谱脂肪抑制（FS）的T2加权快速自旋回波（FSE）成像可提高创伤后膝关节正常骨髓与骨挫伤之间的对比度。
前瞻性评估了73例连续膝关节疼痛患者的76次膝关节磁共振（MR）检查。在矢状面采用传统T2加权成像、冠状面采用T2加权FSE成像、矢状面采用T2加权FS-FSE成像以及矢状面采用传统T1加权成像，评估微小梁损伤区域（骨挫伤）的对比度。
采用FS-FSE技术在21个膝关节中发现了26处骨挫伤灶。采用传统T2加权成像仅显示了16处病灶。单独使用FSE技术（无脂肪抑制）未显示6处骨挫伤部位。4处骨挫伤在T1加权图像上未显示；这些骨挫伤部位在FS-FSE图像上明显更清晰。此外，FS-FSE成像在显示微小梁损伤范围方面更敏感。
T2加权FS-FSE成像是一种识别和评估膝关节周围微小梁损伤范围的敏感且快速的方法。
