"A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z - misc"
"UKIO: United Kingdom Imaging and Oncology"
"U"
"U&Es: urea and electrolytes (incorrectly: Us & Es)"
"United States of America"
"Ut: uterus"
"uracil (RNA nucleotide)"
"UA"
"UAC: umbilical arterial catheter"
"UAE: uterine artery embolisation"
"UBC: unicameral bone cyst"
"UBO: unidentified bright object"
"UBM: ultrasound biomicroscopy"
"UC"
"UCL: ulnar collateral ligament"
"UDFF: ultrasound-derived fat fraction"
"UDVL: undetectable viral load"
"UEC: urea, electrolytes, creatinine"
"UFH: unfractionated heparin"
"UG: undergraduate"
"UGI: upper gastrointestinal"
"UGIB: upper gastrointestinal bleeding"
"UHF: ultrahigh field (MRI)"
"UHFUS: ultra-high frequency ultrasound"
"UHR: ultra-high resolution (in PCD-CT)"
"UH-WBI: ultra-hypofractionated whole-breast irradiation"
"UIA: unruptured intracranial aneurysm"
"UIP: usual interstitial pneumonia"
"UIQ: upper inner quadrant (breast)"
"UK: United Kingdom"
"UKB: United Kingdom Biobank"
"UKIO: United Kingdom Imaging and Oncology"
"UL: upper limb"
"ULAR: ultra low anterior resection"
"ULP: ulcer-like projections"
"UNS: unilateral nerve sparing"
"UO: ureteric orifice"
"UOQ: upper outer quadrant (breast)"
"UPJ: ureteropelvic junction"
"UPPP: uvulopalatopharyngoplasty"
"UPS: uninterruptible power supply"
"UPSI: unprotected sexual intercourse"
"UQ: upper quartile"
"URT: upper respiratory tract"
"URTI: upper respiratory tract infection"
"US: ultrasound"
"USA"
"USC"
"USG: ultrasonography"
"USMLE: United States Medical Licensing Exam"
"USO: ulnar shortening osteotomy"
"USPIO: ultra small superparamagnetic iron oxide (nanoparticles)"
"USS: ultrasound scan"
"USWP: ulnar-sided wrist pain"
"UTD: urinary tract dilation"
"UTE: ultrashort echo time"
"UTI: urinary tract infection"
"UTSE: ultrashort turbo spin echo (Philips)"
"UTWB: unable to weight bear"
"UV"
"UVC: umbilical venous catheter"
"UVJ: ureterovesical junction"
"UVL: undetectable viral load"
"UWF: unwitnessed fall"
"UWSD: underwater seal drain"
"UZ: upper zone"
"U&Es: urea and electrolytes (incorrectly: Us & Es)"
"UK: United Kingdom"
"UKB: United Kingdom Biobank"
"USMLE: United States Medical Licensing Exam"