The measurement of pressure using a manometer(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "manometry" in a sentence
"The fellow will ultimately develop skills to become independently proficient in diagnostic procedures such as upper and lower endoscopy, rectal suction biopsy, liver biopsy and manometry."
"Over 4,000 procedures are performed annually and include: endoscopy, manometry, liver biopsy, hydrogen breath test, resting energy expenditures, DEXA bone density measurements and pancreatic function testing."
"In April, 2010, Given Imaging acquired Sierra Scientific Instruments, the leading provider of specialty GI diagnostic solutions and pioneer of high-resolution manometry for assessing gastrointestinal motility."