Читать книгу Salivary Gland Pathology - Группа авторов - Страница 68

Fluid attenuation inversion recovery (FLAIR) is not as commonly used in the neck but is a necessity in brain imaging. By nulling the CSF signal, brain tissue edema from a variety of causes stands out and is easily identified. It is however not specific. FLAIR can be useful for assessing skull base or foraminal invasion by tumors. However, artifacts can result from CSF pulsation or high FiO₂ administration and can mimic pathologic processes such as subarachnoid hemorrhage, or meningitis (bacterial, carcinomatous, viral, or aseptic) (Figure 2.14).

Figure 2.13. Axial (a) and coronal (b) MRI T1 post‐contrast fat saturated image demonstrating a mass in the left parotid gland. Note the mild vascular enhancement and suppression of fat high signal on T1 weighted image.