title: CRT
text: # CRT
  
  CRT or Crt may refer to:
  
  ## Law
  
  * Charitable remainder trust, United States
  * Civil Resolution Tribunal, Canada
  * Columbia River Treaty, Canada–US, 1960s
  
  ## Science, technology, and mathematics
  
  ### Medicine and biology
  
  * Calreticulin, a protein
  * Capillary refill time, for blood to refill capillaries
  * Cardiac resynchronization therapy and CRT defibrillator (CRT-D)
  * Catheter-related thrombosis, the development of a blood clot related to long-term use of central venous catheters
  * Certified Respiratory Therapist
  * Chemoradiotherapy, chemo- and radiotherapy combined
  * Cognitive Retention Therapy, for dementia
  * Corneal Refractive Therapy, in optometrics
  * CRT (genetics), a gene cluster
  
  ### Social sciences
  
  * Cognitive reflection test, in psychology
  * Critical race theory, an academic framework of analysis
  * Current reality tree (theory of constraints), in process management
  
  ### Technology
  
  * Cathode-ray tube, a display
  * Microsoft C Run-Time library
  * SecureCRT, formerly CRT, a telnet client
  * .crt, X.509 Certificate filename extension
  
  ### Other uses in science and mathematics
  
  * Chinese remainder theorem, in number theory
  * Crater (constellation), in astronomy (abbreviated Crt)
  
  ## Transport
  
  * Canal & River Trust, England and Wales
  * Changchun Rail Transit, China
  * Chongqing Rail Transit, China
  * Connecticut River Transit, a defunct American bus service
  * Cross River Tram, a defunct proposal in London, England
  * CRT Group, an Australian transport company
  * Chicago Rapid Transit Company, a defunct American rail company
  
  ## Other uses
  
  * Canadian Railway Troops, WWI
  * Claiming Rule Teams, in motorcycle racing
  * Connecticut Repertory Theatre, University of Connecticut
  * Correctional Emergency Response Team
  * Iyojwaʼja Chorote, a language in Salta province, Argentina, ISO 639 code
  