Imaging of Acute Head Emergencies
Fig. 16.1 (a, b) Cerebral edema. Noncontrast axial CT image of the brain shows diffuse hypodensity in the brain parenchyma, with loss of the gray-white interface compatible with brain edema….
Imaging of Blunt and Penetrating Abdominal Trauma
Grade Description I Hematoma: subcapsular, <10 % surface area Laceration: capsular tear, <1 cm in parenchymal depth II Hematoma: subcapsular, 10–50 % surface area; intraparenchymal, <10 cm in diameter Laceration:…
Imaging of Facial Fractures
Fig. 17.1 Normal CT anatomy and facial buttresses. (a) 3D surface-rendered image demonstrating the four vertical and four transverse buttresses (1 medial maxillary, 2 lateral maxillary, 3 upper transverse maxillary,…
Emergencies of the Biliary Tract
Fig. 2.1 Imaging appearance of gallstones on plain radiograph and ultrasound. (a) Plain radiograph demonstrates laminated radiopaque gallstones in the right upper quadrant. Up to a fifth of the gallstones…
Imaging of Small Bowel
Fig. 4.1 Duodenal diverticulum. Upper GI study demonstrates an incidentally detected solitary duodenal diverticulum arising from the third portion of the duodenum Fig. 4.2 Small bowel diverticulosis. (a) Small bowel…
Imaging of Acute Pancreas
CT finding CT grade Score Normal pancreas A 0 Focal or diffuse enlargement of the pancreas B 1 Inflammatory changes in peripancreatic fat C 2 Single fluid collection D 3…
Acute Appendicitis
Fig. 3.1 Normal anatomy of the appendix on barium enema and CT. Coronal CT reformation of the abdomen demonstrates normal air-filled appendix (curved arrow) medial to the cecum. Normal appendiceal…
Emergency Radionuclide Imaging of the Thorax and Abdomen
Clinical indication Examination Radiopharmaceuticals Typical time to completion Sensitivity Specificity Positive predictive value Negative predictive value References Acute pulmonary embolism V/Q lung scintigraphy Ventilation: 133Xe gas, inhaled, or 99mTc DTPA…
Acute Nontraumatic Imaging in the Liver and Spleen
, Sridhar Shankar1 and Ajay Singh2 (1) Department of Radiology, University of Tennessee, Memphis, TN, USA (2) Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 10 Museum Way, # 524, Boston,…
Imaging of Acute Thoracic Trauma
Fig. 24.1 (a) Pneumomediastinum and pneumothorax. Single frontal chest radiograph from a trauma patient after a gunshot wound reveals air between the epicardium and the pleura on the left (curved…
