Search results
Results from the WOW.Com Content Network
Abdominal imaging is associated with many potential uses for the different phases of contrast CT.The majority of abdominal and pelvic CT's can be performed using a single-phase, but the evaluation of some tumor types (hepatic/pancreatic/renal), the urinary collecting system, and trauma patients among others, may be best performed with multiple phases.
CT scanning can perform a virtual colonoscopy with greater accuracy and less discomfort for the patient than a traditional colonoscopy. [143] [144] Virtual colonography is far more accurate than a barium enema for detection of tumors and uses a lower radiation dose. [145] CT is a moderate-to-high radiation diagnostic technique.
The Hounsfield unit (HU) scale is a linear transformation of the original linear attenuation coefficient measurement into one in which the radiodensity of distilled water at standard pressure and temperature is defined as 0 Hounsfield units (HU), while the radiodensity of air at STP is defined as −1000 HU.
Measurement of hormones including pancreatic polypeptide, gastrin, proinsulin, insulin, glucagon, and vasoactive intestinal peptide can determine if a tumor is causing hypersecretion. [ 18 ] [ 19 ] Multiphase CT and MRI are the primary modalities for morphologic imaging of PNETs.
Pancreatic cancer has a low survival rate and is usually found too late — this new test may help change that New Test Detects Early Pancreatic Cancer with 85% Accuracy — and Researchers Say It ...
The pancreatic duct is generally regarded as abnormally enlarged if being over 3 mm in the head and 2 mm in the body or tail on CT scan. [9] Pancreatic duct or parts of pancreatic duct can be demonstrated on ultrasound in 75 to 85% of people. [10] Pancreatic ductal carcinoma is a common form of pancreatic cancer.
They were introduced in 1974 by the English-American pancreatic expert and surgeon Dr. John Ranson ... (at least 30% glandular necrosis according to contrast-enhanced CT)
A contrast-enhanced CT scan is usually performed more than 48 hours after the onset of pain to evaluate for pancreatic necrosis and extrapancreatic fluid as well as predict the severity of the disease. CT scanning earlier can be falsely reassuring. [34] ERCP or an endoscopic ultrasound can also be used if a biliary cause for pancreatitis is ...