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The major for any starting radiologist who needs to acknowledge pathological findings is to first gather a capability to tell apart them from general ones. This notable consultant provides starting radiologists the instruments they should systematically process and realize common MR and CT photos.
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Usage subject to terms and conditions of license. 52 CT: Abdomen ț Attenuation values (see below) ț Homogeneous internal parenchymal structure ț Intrahepatic bile ducts — Course (centrifugal) — Width (general rule: should no longer be visible after contrast administration) ț Gallbladder (if visualized): — Size — Contents — Wall thickness ț Porta hepatis occupied by the hepatic artery, common bile duct, and portal vein; no masses or lymphadenopathy Spleen ț Position ț Size ț Borders ț Density (see below) Kidneys ț Paired ț Position ț Size ț Smooth contours ț Width of parenchyma ț Density (see below) Adrenal glands ț Shape ț Size (see below) ț Symmetrical crura ț No circumscribed expansion Intestinal ț Normal wall thickness structures (colon ț Homogeneous opacification by oral contrast mehaustrations, dium small bowel) ț No free extraintestinal or intra-abdominal air or fluid Blood vessels ț Size (aorta, inferior ț No luminal obstruction vena cava) Lymph node ț No lymphadenopathy stations (paraaortic, retrocrural) blubberblu Moeller, Normal Findings in CT and MRI © 2000 Thieme All rights reserved.
55 56 CT: Abdomen Kidneys Both kidneys appear normal in size and position, with normal width and density of the renal parenchyma. There is no evidence of a mass. The calices are of normal shape. The renal pelvis is normal and free of stones, and there is no obstruction of urinary drainage. Contrast-enhanced scans show a normal time to corticomedullary equilibrium and timely, symmetrical contrast excretion into the renal pelves with no filling defects. The perirenal and pararenal spaces are unremarkable.
4 cm b Transverse diameter 5−6 cm; craniocaudal diameter (= highest to lowest section) 8−13 cm c Transverse renal axis: posteriorly divergent angle of 120° d Width of renal cortex: 4−5 mm e Width of ureter: 4−7 mm Position of superior poles of kidneys: ț Right: superior border of L1 ț Left: inferior border of T12 bber Moeller, Normal Findings in CT and MRI © 2000 Thieme All rights reserved. Usage subject to terms and conditions of license. 39 40 CT: Abdomen Time to corticomedullary equilibrium: ț 1 minute Contrast excretion into the pyelocaliceal system: ț 3 minutes Gerota fascia (thickness): ț 1−2 mm Lymph nodes larger than 1 cm are suspicious for pathology.
A simplified guide to using the MCS51 on-chip UART