Changes

==Choice of modalityUnspecific location==

==Right upper quadrant pain=='''[[Abdominal ultrasonography]]''' is generally the investigation of choice, at least in younger people, with symptoms pointing at certain organ systems:. *'''[[Ultrasonography of cholecystitis|Ultrasonography for cholecystitis]]'''.<ref name=NEJM2008>{{cite journal|last1=Strasberg|first1=SM|titleCholecystitis==Clinical practice. Acute calculous cholecystitis.|journal=The New England Journal Cholecystitis is indicated by upper right quadrant pain and signs of Medicine|date=26 June 2008|volume=358|issue=26|pages=2804–11|pmid=18579815|doi=10infection.1056/nejmcp0800929}}</ref><ref name="pmid7979854">{{cite journal |vauthors = Shea JA, Berlin JA, Escarce JJ, Clarke JR, Kinosian BP, Cabana MD, Tsai WW, Horangic N, Malet PF, Schwartz JS |title=Revised estimates Cholecystitis - choice of diagnostic test sensitivity and specificity in suspected biliary tract disease |journal = Arch. Intern. Med. |volume = 154 |issue = 22 |pages = 2573–81 |date = November 1994 |pmid = 7979854 modality|doi headerlevel= 10.1001/archinte.154.22.2573 4}}</ref><ref name ="pmid3893388">{{cite journal |vauthors = Fink-Bennett D, Freitas JE, Ripley SD, Bree RL |title = The sensitivity of hepatobiliary imaging and real-time ultrasonography in the detection of acute cholecystitis |journal = Arch Surg |volume = 120 |issue = 8 |pages = 904–6 |date = August 1985 |pmid Gallstone= 3893388 |doi = 10.1001/archsurg.1985.01390320028004 }}</ref> Alternatively, CT scan may be used if complications such as perforation or gangrene are suspected.<ref name="Friedman 2015">Friedman L.S. (2015). Liver, Biliary Tract, & Pancreas Disorders. In Papadakis M.A., McPhee S.J., Rabow M.W. (Eds), Current Medical Diagnosis & Treatment 2015</ref>*'''Ultrasonography for biliary colic''', which This is a severe pain, typically indicated in the right upper quadrant or in the epigastrium, but it may also be retrosternal, and lasts for 20 minutes to 6 hours. Without an indication of inflammation, the investigation is done electively (within a couple pain without signs of weeks)infection.<ref>[https://books.google.se/books?id=HxzEDgAAQBAJ&pg=PA478&lpg=PA478 Page 478] in: {{cite book|title=Acute Medicine: A Practical Guide to the Management of Medical Emergencies|author=David C. Sprigings, John B. Chambers|edition=5|publisher=John Wiley & Sons|year=2017Gallstones - modality|isbnheaderlevel=97811186442634}}</ref>