Introduction Cerebral amyloid angiopathy (CAA) is a microangiopathy defined by progressive deposition of beta amyloid (Aβ) in the walls of distal cortical and leptomeningeal vessels. The resulting small vessel damage can result in hemorrhage, infarction, and/or chronic hypoperfusion, the sequela…
Introduction Posterior reversible encephalopathy syndrome (PRES) refers to a potentially reversible neurotoxic state occurring in association with vasogenic cerebral edema. Although the reported age range varies between 4 and 90 years, most affected patients are in their fourth or fifth…
Introduction The accurate age determination of a subdural hemorrhage is one of the most common and basic assessments in the setting of head trauma. On computed tomography (CT), the classic descriptions of blood products within the subdural space relate to…
You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
Introduction Magnetic resonance imaging (MRI) can differentiate between acute, subacute, and chronic hemorrhage because of its sensitivity and specificity to hemoglobin degradation products. Therefore the imaging interpreter is, with proper knowledge, able to estimate the age of a brain parenchymal…
Spinal Parlance This chapter begins with a brief review of the anatomy of the spine. Imaging techniques are then discussed, followed by the normal imaging appearance of the spine on magnetic resonance (MR) imaging and computed tomography (CT). We then…
As opposed to the mucosal diseases of the head and neck, in which the differential diagnosis usually revolves around squamous cell carcinoma 90% of the time, the extramucosal space allows the radiologist to exercise finely honed skills in forming a…
The approach to this chapter on mucosal disease is divided along disease categories combining all regions except for the discussion of malignant masses. Because the basis for discussing cancers with clinicians is rooted in the TNM staging of the American…
To appreciate the pathogenesis of sinusitis, you must understand the normal anatomic pathways of mucociliary clearance in the paranasal sinuses ( Fig. 12-1 ). The cilia within the maxillary sinus propel the mucous stream in a starlike pattern from the…
The detailed bony anatomy of the vestibulocochlear structures of the temporal bone makes computed tomography (CT) the primary method of evaluating the erosive and inflammatory lesions of the temporal bone. Magnetic resonance imaging (MRI) also has an important role in…