Diagnostic Imaging, Includes Wiley E-Text
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Diagnostic Imaging will help medical students, junior doctors, residents and trainee radiologists understand the principles behind interpreting all forms of imaging. Providing a balanced account of all the imaging modalities available – including plain film, ultrasound, computed tomography, magnetic resonance imaging, radionuclide imaging and interventional radiology – it explains the techniques used and the indications for their use.
Organised by body system, it covers all anatomical regions. In each region the authors discuss the most suitable imaging technique and provide guidelines for interpretation, illustrating clinical problems with normal and abnormal images.
Diagnostic Imaging is extensively illustrated throughout, featuring high quality full-colour images and more than 600 photographs. The images are downloadable in PowerPoint format from the brand new companion website at www.wileydiagnosticimaging.com, which also has over 100 interactive MCQs, to aid learning and teaching.
When you purchase the book you also receive access to the Wiley E-Text: Powered by VitalSource. This is an interactive digital version of the book, featuring downloadable text and images, highlighting and note-taking facilities, bookmarking, cross-referencing, in-text searching, and linking to references and abbreviations. Diagnostic Imaging is also available on CourseSmart, offering extra functionality as well as an immediate way to access the book. For more details, see www.coursesmart.com or ‘The Anytime, Anywhere Textbook ’ section.
abnormal pulmonary opacities or translucencies. Do not mistake the pectoral muscles, breasts (see 22 Chapter 2 Position of right oblique fissure Position of left oblique fissure T UL UL T Horizontal fissure (Lingula) Horizontal fissure Left oblique fissure LL (a) ML (b) LL Right oblique fissure (c) Fig. 2.4 Position of the lobes and fissures. (a) The oblique (major) fissure is similar on the two sides. The oblique fissures are not visible on the frontal view; their position is
fractures and metastases. Any rib notching should be noted as it may indicate coarctation of the aorta. In females, check that both breasts are present. Following mastectomy the breast opacity cannot be defined. The reduction in the soft tissue bulk leads to an increased transradiancy of that side of the chest, which should not be confused with pulmonary disease. A routine chest computed tomography (CT) examination consists of contiguous sections. Intravenous contrast medium is given in many
foreign body or retained mucus plugs, particularly in postoperative, asthmatic or unconscious patients, or in patients on artificial ventilation. • Invasion or compression by an adjacent malignant tumour or rarely by enlarged lymph nodes. When a lobe collapses, the unobstructed lobe(s) on the side of the collapse undergoes compensatory expansion. The mediastinum and diaphragm may move towards the collapsed lobe. As lobar collapse is such an important and often diffi cult diagnosis to make on
often with a linear or ductal distribution and with or without an associated mass or soft tissue density • Associated features include: – architectural distortion – skin thickening – axillary lymph node enlargement Mammography is a low dose x-ray examination of the breast obtained using a dedicated x-ray unit designed to maximize the contrast between the various soft tissues of the breast. Normal mammographic appearances vary widely, with a variable proportion of low density adipose tissue
inside the bowel wall (may be due to physiological spasm) • outside the bowel wall due to compression by an extrinsic mass. Spasm is often seen in normal patients and, providing it is an isolated finding, it can be ignored. Spasm is also seen in conjunction with diverticular disease and various inflammatory disorders. The main causes of stricture formation in the bowel wall are listed in Box 6.7. When attempting to diagnose the nature of a stricture in the colon the following points should be