Elastography for Focal Liver Disease

Jul 9, 2018 by in ULTRASONOGRAPHY Comments Off on Elastography for Focal Liver Disease

Elastography for Focal Liver Disease Stephanie R. Wilson 4.1 Introduction Characterizing focal liver masses comprises a significant component of health care costs with substantial impact on patient management both in health…

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Introduction to Elastography

Jul 9, 2018 by in ULTRASONOGRAPHY Comments Off on Introduction to Elastography

Comparison of different modes of medical ultrasonography Mode What is measured: What is displayed: B-mode Acoustic impedance Anatomy Doppler Motion Vascular flow Elastography Mechanical properties Tissue stiffness Ultrasound elastography (commonly…

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Anatomy

Jul 6, 2018 by in MAGNETIC RESONANCE IMAGING Comments Off on Anatomy

Anatomy A. Mueller and R. von Kummer 1.1 Introduction The brain is an extremely complex structure with a seemingly random arrangement of ridges (gyri) separated by grooves (sulci). The interior of…

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Pineal Tumors

Jul 6, 2018 by in MAGNETIC RESONANCE IMAGING Comments Off on Pineal Tumors

Pineal Tumors 3.7.1 Pineoblastoma Pineoblastomas belong to the group of PNETs, placing them in the same category as medulloblastomas and ependymoblastomas. Pineoblastomas occur mainly in very young patients. They are aggressive…

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Astrocytic Tumors

Jul 6, 2018 by in MAGNETIC RESONANCE IMAGING Comments Off on Astrocytic Tumors

Astrocytic Tumors Many primary tumors of the central nervous system (CNS) arise from glial cells. The glial cells, in turn, are comprised of astrocytes, oligodendrocytes, and ependymal cells. Astrocytes give…

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Tumors and Tumorlike Masses

Jul 6, 2018 by in MAGNETIC RESONANCE IMAGING Comments Off on Tumors and Tumorlike Masses

Masses of the spinal canal are classified by their anatomic location. They may involve the extradural, intradural–extramedullary, or intramedullary space. Localizing a mass to a specific compartment is often helpful…

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Vascular Diseases

Jul 6, 2018 by in MAGNETIC RESONANCE IMAGING Comments Off on Vascular Diseases

Vascular Diseases M. Forsting 2.1 Cerebral Ischemia Stroke is caused either by cerebral ischemia (70–80% of all cases) or by an intracerebral or subarachnoid hemorrhage (20–30%). It has an acute to…

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