▪ Introduction Diffuse liver processes range from incidental signal and/or enhancement derangements, such as steatosis or transient hepatic intensity differences (THIDs), to serious, and potentially end-stage parenchymal disorders, such as cirrhosis and Budd-Chiari Syndrome (BCS). Segmental, or geographic lesions typically…
▪ Introduction Magnetic resonance imaging (MRI) is the most comprehensive and definitive noninvasive modality for evaluating the liver. A combination of enhancement characteristics and exquisite tissue contrast allows for the characterization of liver lesions. Unique artifacts—such as susceptibility and chemical…
▪ Magnetic Resonance Imaging: What is the Objective? Magnetic resonance imaging (MRI) exploits the inherent magnetism of the protons that constitute the human body in a creative way—through manipulation with radiofrequency (Rf) energy in the presence of a strong magnetic…
In this chapter entities such as disk disease and the osseous structures of the spinal canal will be discussed again, as well as postoperative spine changes. The appearances of the bones in the setting of some systemic diseases are additional…
Introduction The advent of increasing numbers of rows of detectors has expanded the utility for CT technology. Multidetector CT (MDCT) has the ability to produce near-isotropic voxel images that allow multiplanar reformations and faster data acquisition. This technique is particularly…
Anatomy The true (lesser) pelvis is divided from the false (greater) pelvis by an oblique plane extending across the pelvic brim from the sacral promontory to the symphysis pubis. The true pelvis contains the rectum, bladder, pelvic ureters, and prostate…
Basic Principles CT complements endoscopy and barium examination of the gastrointestinal (GI) tract by demonstration of intramural and extraintestinal components of GI disease, including disease in the mesentery, peritoneal cavity, lymph nodes, and liver. CT is used to diagnose the…
The adrenal glands are the primary focus of diagnostic attention in three clinical circumstances. A patient may be referred for imaging because a clinical diagnosis of adrenal hormone hyperfunction has been made. CT is then used to identify and characterize…
Kidneys Anatomy of the Retroperitoneal Space A detailed understanding of the retroperitoneal fascial planes and compartments is a prerequisite for accurate interpretation of abdominal CT. The retroperitoneum is the anatomic compartment between the posterior parietal peritoneum and the transversalis fascia…
With high-resolution multidetector CT and dynamic multiphase postcontrast protocols, an increasing number of splenic lesions are being detected. These require characterization by combination of imaging findings with clinical data. Many spleen lesions are nonspecific in appearance. At a minimum, splenic…