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Percutaneous transhepatic cholangiography (PTC) and percutaneous biliary drainage (PBD) techniques gained widespread popularity in the late 1970s and early 1980s after they were first described. However, the use of both PTC and PBD has declined with the development of diagnostic and therapeutic endoscopic retrograde cholangiopancreatography (ERCP). PTC and PBD remain an important part of interventional radiology and are performed on a regular basis at many institutions.…

The role of the radiologist in gastrointestinal tract intervention has mushroomed with the advent of percutaneous gastrostomy and more recently esophageal and colorectal stenting. These new procedures, coupled with the older procedures of gastrointestinal stricture dilatation, have made gastrointestinal tract intervention an important area of visceral intervention. Additionally, these procedures are predominantly performed under fluoroscopic guidance so that they can be performed in almost all radiology…

Percutaneous drainage is now the accepted technique for draining abscesses in most body locations, especially since the evolution over the past 10-15 years of precise imaging localization of fluid collections, improved methods of percutaneous drainage, and improved antibiotic regimens. Initially, percutaneous abscess drainage (PAD) was reserved for those collections that were unilocular with a clear access route and without evidence of fistulous communication; now, however, it…

Percutaneous image-guided biopsy has gained wide popularity. It can be used to establish the identity of superficial or deep masses in many parts of the body. Advances in cytopathologic techniques, the ability to precisely guide needles to various locations in the body using computed tomography (CT) and sonography, and the safety of fine-needle biopsy have led to widespread acceptance of biopsy procedures by clinicians. The vast…

Venous pathology is eight times more common in the lower extremities than arterial disease. However, the range of clinically important venous pathology in the lower extremities is relatively narrow, with thrombotic disorders, chronic occlusion, and valvular insufficiency comprising more than 95% of cases. There are an estimated 2,000,000 new cases of deep venous thrombosis (DVT) each year in the United States. Complications of venous thromboembolism are…

The lower-extremity arteries are a common site for vascular diseases. The legs have a relatively large muscle mass and a prominent role in basic daily activities. Lesions in this vascular bed produce troublesome symptoms at an early stage. Advanced disease frequently results in limb loss, although often the underlying systemic disease has the greatest impact on mortality. Interventions in the lower extremities are increasing in frequency…

Portal and hepatic venous interventions are increasing due to the growing population of patients with chronic liver disease and the application of more aggressive surgical approaches to hepatic malignancy. Catheter-based techniques are important for the diagnosis and management of these conditions. Anatomy Hepatic Segmentation The distributions of the right and left hepatic arteries and portal vein branches are not reflected by surface landmarks such as the…

The inferior vena cava (IVC) and its tributaries are frequent sites of vascular pathology. Diseases of organs that drain into the IVC may first become clinically apparent when the cava becomes involved. IVC imaging and intervention are prominent components of current interventional radiology practice. Normal Anatomy The IVC is formed by the confluence of the common iliac veins at the level of the L5 vertebral body…

The kidneys receive almost 15% of the cardiac output, although they account for less than 5% of the total body mass. Obstructive arterial diseases of the kidney have both functional (e.g., decreased creatinine clearance) and hormonal (angiotensin-mediated hypertension) implications. There are few organs that have such a complex response to vascular disease and potentially rewarding results with intervention. Anatomy Renal Arteries The kidneys are paired organs…

The arterial anatomy of the gastrointestinal tract is the most variable of all vascular beds. In addition, there is great diversity in the types of diseases that involve the gastrointestinal arteries and organs. Many visceral disorders, vascular and otherwise, can be treated effectively with endovascular techniques. As a result, visceral arterial diagnosis and intervention continues to be an important aspect of interventional radiologic practice. Normal Anatomy…

The abdominal aorta and pelvic arteries supply blood to all of the structures below the diaphragm. The pathologic processes that involve these vessels are varied and have major morbidity. This chapter covers aortic-iliac arterial diseases, including the male and female reproductive organs. The renal and mesenteric arteries are discussed in separate chapters. Normal and Variant Anatomy Abdominal Aorta The abdominal aorta begins at the level of…

Thoracic aortic diseases can be among the most challenging vascular problems to manage. The organs that are supplied directly by this segment of aorta (heart, brain, and spine) are intolerant of ischemia for more than a few minutes. Flow disturbances in the aorta impact the entire body. Surgical access requires a thoracotomy or sternotomy, and often cardiopulmonary bypass. The high morbidity of open repair of thoracic…

The lungs receive blood from both ventricles—the entire volume of the right heart and also a small fraction of blood from the left heart (via the bronchial arteries). Functionally, the lungs have two roles: oxygenation of venous blood and filtration of the systemic venous blood. Pulmonary vascular pathology, imaging, and intervention frequently have a clinical impact that extends far beyond the lungs. Anatomy The pulmonary arterial…

The veins of the neck, arms, and chest are visited frequently by interventional radiologists. Placement of long-term central venous access catheters is a common yet essential procedure. The upper extremity veins are of critical importance for dialysis patients, whether they are managed with venous catheters or surgically created access. Upper extremity and central venous occlusions can cause severe symptoms, and are best managed with catheter-based techniques.…

Arterial disease is diagnosed less often in the upper than in the lower extremities, but unusual pathologies such as vasculitis, entrapment syndromes, and trauma are more common. This makes upper extremity arterial diagnosis challenging and intervention interesting. Normal and Variant Anatomy The arterial blood supply of the upper extremities begins with the subclavian artery on the left and the brachiocephalic (also known as the innominate) artery…

The organ at risk from carotid and vertebral artery disease is the brain. Central nervous system ischemia can be severely debilitating and even lethal. Vascular imaging has a major role in the diagnosis of all aspects of cerebrovascular disease. Catheter-based interventions are frequently utilized in the therapy of occlusive disease and acute stroke. This chapter focuses primarily on diagnosis and catheter-based interventions in the extracranial carotid…

Percutaneous vascular interventions can be grouped into those that improve or occlude the lumen and those that implant or remove things. The fundamentals of each of these interventions are the same across most of the vascular system. This chapter describes the basic principles of how to perform vascular interventions. The results of specific interventions are discussed in the appropriate anatomic chapters. The history of percutaneous catheter-based…

Diagnostic imaging of patients with vascular disease is most often performed with ultrasound (US), computed tomography (CT), or magnetic resonance imaging (MRI). The purpose of this chapter is to provide an understanding of the basic principles of each of the noninvasive modalities. Ultrasound Grayscale Ultrasound Much of the evaluation of blood vessels with ultrasound can be accomplished with conventional grayscale imaging. A transducer that emits high-frequency…

The development of modern angiography was enabled by one simple technique: the percutaneous introduction of devices into a blood vessel over a wire guide ( Fig. 2-1 ). Described by Sven Ivan Seldinger in 1953, this elegant innovation (now known by Seldinger’s name) eliminated the need for surgical exposure of a blood vessel before catheterization, thus allowing the transfer of angiography from the operating room to…

Blood vessels are, in the simplest of terms, the plumbing of the body. Problems arise when blood flow is diminished, excessive, in the wrong direction, or when leaks occur ( Table 1-1 ). In reality, blood vessels are complex organs within other complex organs. The degree of vascular disease that can be tolerated before symptoms occur varies with the type of blood vessel, the nature and…