Comparative diagnostic evaluation with MR cholangiopancreatography, ultrasonography and CT in patients with pancreatobiliary disease

Abstract

The results of our study confirm the diagnostic potential of MRCP in the study of the pancreaticobiliary duct system. In particular, the comparison between MRCP and US and MSCT indicates the superiority of MRCP in evaluating bile ducts and detecting stones in the common bile duct.

Hepatic and Pancreaticobiliary Mri and MR Cholangiopancreatography With and Without Secretin Stimulation in Normal Cats

“…3 In people, attempts to minimize these issues include fasting patients for 4-6 h to encourage gallbladder filling and gastric emptying, administering negative oral contrast material, such as, superparamagnetic siliconcoated iron oxide agents, or anti-peristaltic drugs. 6,11,12 However, these measures are not included consistently in human-imaging protocols. For this study, the cats were fasted overnight and had ventilation suspended during sequence acquisition to minimize gastric contents and respiratory movements, respectively.…”

“…cholangiopancreatography in the early 1990s, the combination of this technique with anatomic abdominal MR imaging has evolved as an accurate, highly sensitive, and specific imaging method for the assessment of human biliary and pancreatic duct disorders. [1][2][3][4][5][6][7][8][9][10][11][12] MR cholangiopancreatography is noninvasive and capable of providing an anatomic map of the biliary tree and pancreatic duct without the use of ionizing radiation or contrast medium. 2 MR cholangiopancreatography is based on the principle that slow moving fluids are hyperintense on heavily T2weighted images, so bile and pancreatic fluids in the pancreaticobiliary system will be hyperintense resulting in increased duct to background contrast, particularly when postprocessed as maximum intensity projections (MIP).…”

Metal–Organic Framework‐Based Nanomedicine Platforms for Drug Delivery and Molecular Imaging

“…Based on the two different obtained signals, CAs are categorized as T 1 and T 2 binary types . Commercially available T 1 CAs are usually paramagnetic complexes, such Gd‐related compounds, whereas T 2 CAs are usually nanoparticles, such as superparamagnetic iron oxide …”

Magnetic resonance cholangiopancreatography and contrast-enhanced magnetic resonance cholangiopancreatography versus endoscopic ultrasonography in the diagnosis of extrahepatic biliary pathology

“…In gastroenterological clinical practice, US, computed tomography and MRCP have become widely available [19], whereas EUS is only present in a limited number of specialised centres despite its validated excellent diagnostic capabilities [15]. This different availability may be EUS L'ecoendoscopia ha evidenziato un'accuratezza diagnostica lievemente superiore rispetto alla CPRM, con valore pari al 93,3%; la sensibilità e la specificità riportate dalla metodica ecoendoscopica sono state rispettivamente del 97,3% (95% CI=0,921-1,025) …”

“…Nella pratica clinica gastro-enterologica l'ecografia (US), la tomografia computerizzata (TC) e la CPRM hanno avuto una larga diffusione [19], mentre l'EUS è disponibile solo in alcuni centri specialistici, nonostante le elevate e verificate capacità diagnostiche [15]. La differente diffusione nella pratica clinica può essere ricondotta a diversi fattori: l'ecoendoscopia è infatti una metodica diagnostica invasiva, fortemente operatore-dipendente, che necessita di sedazione per essere eseguita [15,16].…”