Ellen G. Hoeffner, MD, and Laurie A. Loevner, MD LEARNING OBJECTIVES 1. Review the imaging findings of common acute infectious and inflammatory conditions of the neck and learn the fundamentals of…
FIG. 23.1 Normal anatomy of the parotid glands. T1-weighted (A) and T2-weighted (B) MR and contrast-enhanced CT (C) images of the upper neck at the level of the parotid glands.A:…
FIG. 22.1 Bones constituting the skull base. Graphical representation of bones of the skull base includes the unpaired midline bones, ethmoid, sphenoid, and occipital (red, teal, and blue, respectively), and…
Acknowledgment: Darryl H. Hwang, PhD. Masses that are extradural in location may surround, compress, or displace the thecal sac (see Table 13.1). These lesions may show a “cutoff sign” of…
Dushyant Purohit, MD, FRCPath, David M. Carpenter, PhD, and Thomas P. Naidich, MD LEARNING OBJECTIVES 1. Appreciate the gyral and sulcal anatomy of the brain surface. 2. Appreciate the gross structure of…
Another aspect of the evaluation of brain masses is to determine whether a lesion is solitary or multiple. Brain metastases can be multiple or single, and sometimes, differentiation of a…
FIG. 24.1 Normal floor of mouth anatomy. Contrast-enhanced CT scans. A: In the coronal plane, the mylohyoid muscle (MH) is identified as a muscular U-shaped sling, the primary muscle forming…
FIG. 19.1 Ventral view of the cranial nerves at the base of the brain. The 12 paired cranial nerves are numbered from cranial to caudal in order of their attachment…
FIG. 25.1 Level I node. Axial CT image demonstrates defects in the mylohyoid muscles bilaterally (arrows). A lymph node is located just lateral to the right mylohyoid defect (arrowhead). Notice…
Open spinal dysraphism: myelocele and myelomeningocele Myelomeningocele and myelocele are the quintessential open spinal dysraphisms (open neural tube defects). In open dysraphism, neural tissue and meninges are exposed to the…
