tailieunhanh - Ebook First aid radiology clerkship: Part 2

(BQ) Part 1 book “First aid radiology clerkship” has contents: Genitourinary radiology, obstetrics and gynecology, musculoskeletal radiology, pediatric radiology, awards for medical students intending to pursue radiologic specialties, general medical student awards, and other contents. | H IGH-YI ELD FACTS I N Genitourinary Radiology Imaging Techniques 124 ABDOMINAL X-RAY (KIDNEY/URETER/BLADDER [KUB]) 124 ABDOMINAL (ULTRASOUND [US]) 124 ABDOMINAL COMPUTED TOMOGRAPHY (CT) 132 ABDOMINAL MRI 133 Other Imaging Techniques 134 Renal Calculus Disease 136 Radiologic Approach to Acute Renal Failure 137 Urinary Tract Infections 137 Renal Masses 140 BENIGN RENAL MASSES 140 MALIGNANT RENAL MASSES 141 BENIGN PROSTATIC HYPERTROPHY (BPH) 144 TESTICULAR TORSION 145 RENAL ARTERY STENOSIS 146 123 I M AG I N G T E C H N I Q U E S Abdominal X-ray (Kidney/Ureter/Bladder [KUB]) See Figure 4-1. It may be the first diagnostic test to assess the genitourinary system. Rule out pregnancy in females of reproductive age group. See Chapter 3 (Gastrointestinal Radiology) for how to read a plain film (KUB). INDICATIONS FOR KUB IN EVALUATION OF THE GU SYSTEM HIGH-YIELD FACTS ADVANTAGES Genitourinary Radiology Kidney stones (Fig. 4-1). Free air indicating perforated viscera. Free air may be visualized under the domes of the diaphragm in an upright view (Fig. 3-13). In sick patients, lateral decubitus view is helpful. Abnormal calcifications (Fig. 4-2). Renal agenesis (see normal renal outlines in Figure 4-2). Ascites: Look for obliteration of peritoneal fat pads, displacement of bowel loops (Fig. 4-3). Bowel obstruction: Look for air-fluid levels, dilated bowel loops, obvious points of transition. Small vs. large bowel obstruction (Fig. 3-12). Foreign bodies (Fig. 4-4). Skeletal pathologies. Quick Inexpensive Noninvasive Easy availability LIMITATIONS Renal outline may be obscured by bowel gas. Radiation exposure No functional information Retained barium from other procedures may interfere with visualization. Abdominal (Ultrasound [US]) ADVANTAGES Inexpensive Noninvasive. Often used as first-line modality to image the kidneys in cases of acute renal failure. It involves no contrast or radiation .