| Ultrasound (US) | Imaging technique using high-frequency sound waves to visualize internal organs. |
| Abdominal Ultrasound (ABD US) | Imaging of abdominal organs such as liver, kidneys, pancreas, and bladder. |
| RUQ / LUQ / RLQ / LLQ US | Ultrasound focused on specific abdominal quadrants to evaluate pain or masses. |
| FAST | Emergency ultrasound exam to detect internal bleeding or free fluid in trauma patients. |
| POCUS | Portable or bedside ultrasound used for quick diagnosis by clinicians. |
| Transabdominal / Transvaginal Ultrasound | External (TUS) or internal (TVUS) imaging approaches for pelvic/abdominal organs. |
| Renal Ultrasound (RUS) | Imaging focused on kidneys and urinary system. |
| Gallbladder (GB) | Organ that stores bile; commonly checked for stones or inflammation. |
| Common Bile Duct (CBD) | Pathway for bile from liver/gallbladder to intestine. |
| Portal Vein (PV) | Main vein carrying nutrient-rich blood from intestines to liver. |
| Aorta (Ao) | Largest artery in the body; supplies blood from the heart to lower regions. |
| Spleen (SP) | Organ involved in immune response and red blood cell recycling. |
| Pancreas (PANC) | Produces digestive enzymes and hormones like insulin. |
| Appendix (APP) | Small pouch near the colon; often imaged in suspected appendicitis. |
| Bladder (BLD) | Stores urine; evaluated for residual urine or abnormalities. |
| HCC | Primary liver cancer originating from hepatocytes. |
| HSM | Simultaneous enlargement of liver and spleen. |
| Cholelithiasis (CHole) | Presence of stones in the gallbladder. |
| Cholecystitis | Inflammation of the gallbladder, often from gallstones. |
| Ascites | Free fluid in the abdominal cavity, often due to liver disease. |
| Cyst | Fluid-filled structure that may be benign or pathologic. |
| SOL | Mass that displaces normal tissue, may indicate a tumor. |
| NML | No abnormalities noted in the scan. |
| HET | Uneven texture or appearance in an organ, suggesting possible pathology. |
| HYPO / HYPE | Hypoechoic = darker (often fluid or soft tissue); Hyperechoic = brighter (fat, calcification). |
| B-mode | Standard grayscale imaging used in most ultrasound scans. |
| Color Doppler / Pulsed Wave | Techniques to visualize and measure blood flow. |
| CINE | Loop playback of a sequence of ultrasound images. |
| M-mode | Imaging that captures motion over time, often used in cardiac or fetal assessments. |
| 3D/4D Imaging | Advanced visualization adding depth (3D) or motion (4D) to ultrasound. |
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