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Titolo:
Pitfalls in MR cholangiopancreatographic interpretation
Autore:
Irie, H; Honda, H; Kuroiwa, T; Yoshimitsu, K; Aibe, H; Shinozaki, K; Masuda, K;
Indirizzi:
Kyushu Univ, Grad Sch Med Sci, Dept Clin Radiol, Higashi Ku, Fukuoka 8128582, Japan Kyushu Univ Fukuoka Japan 8128582 ol, Higashi Ku, Fukuoka 8128582, Japan
Titolo Testata:
RADIOGRAPHICS
fascicolo: 1, volume: 21, anno: 2001,
pagine: 23 - 37
SICI:
0271-5333(200101/02)21:1<23:PIMCI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY; MAGNETIC-RESONANCE CHOLANGIOPANCREATOGRAPHY; ERCP; DUCT;
Keywords:
bile ducts; magnetic resonance (MR), maximum intensity projection; pancreatic ducts;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Irie, H Kyushu Univ, Grad Sch Med Sci, Dept Clin Radiol, Higashi Ku, 3-1-1Maidashi, Fukuoka 8128582, Japan Kyushu Univ 3-1-1 Maidashi Fukuoka Japan8128582 a 8128582, Japan
Citazione:
H. Irie et al., "Pitfalls in MR cholangiopancreatographic interpretation", RADIOGRAPHI, 21(1), 2001, pp. 23-37

Abstract

Magnetic resonance (MR) cholangiopancreatography (MRCP) is widely used in the evaluation of pancreatobiliary disorders. However, numerous related pitfalls may simulate or mask pancreatobiliary disease. Maximum-intensity-projection (MIP) reconstructed images completely obscure small filling defects and may demonstrate respiratory motion artifacts. T2 weighting may vary with different MR imaging sequences and influence MRCP findings. Incomplete imaging may create confusion regarding ductal anatomy or disease. Furthermore, MRCP yields only static images and thus may fail to depict various anomalies. Limited spatial resolution makes differentiation between benign and malignant strictures with MRCP alone extremely difficult. Susceptibility artifacts may be caused by metallic foreign bodies or gastric-duodenal gas. Fluid accumulation may produce a pseudolesion or pseudostricture, although changing the imaging angle or section thickness may be helpful. Pneumobilia may be misinterpreted as bile duct stones, and true stones may be overlooked. Pulsatile vascular compression can cause pseudo-obstruction of the bile duct. Use of both source and MIP reconstructed images obtained from differentangles can help avoid cystic duct-related pitfalls. Repeat MRCP or conventional MR imaging can help avoid pitfalls related to the periampullary region. Segmental collapse of the normal main pancreatic duct may be misinterpreted as stenosis, but administration of secretin is helpful. An awareness ofthese pitfalls and possible solutions is crucial for avoiding misinterpretation of MRCP images.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 07:53:14