The breath-hold 2D MRCP and the respiratory-triggered 3D MRCP sequences, comparative study as regards the possible pitfalls
Autor: | Mahmoud Agha, Ahmed Mohamed Abougabal, Hazem Abd Ellatief |
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Jazyk: | angličtina |
Rok vydání: | 2018 |
Předmět: |
lcsh:Medical physics. Medical radiology. Nuclear medicine
medicine.medical_specialty medicine.diagnostic_test business.industry lcsh:R895-920 Thin slab Computed tomography Pneumobilia medicine.disease Group B 030218 nuclear medicine & medical imaging Past history 03 medical and health sciences 0302 clinical medicine Sphincter of Oddi medicine 030211 gastroenterology & hepatology Radiology Nuclear Medicine and imaging Radiology Respiratory system business |
Zdroj: | The Egyptian Journal of Radiology and Nuclear Medicine, Vol 49, Iss 3, Pp 614-623 (2018) |
Popis: | This study aims to clarify the common pitfalls, frequently seen in different MRCP sequences. Patients and methods: 200 patients were evaluated with (T2_TSE_Cor_BH) thick slab (group A) and (3D-MRCP HR) thin slab sequences (group B), in correlation with routine MRI, CT scan and ERCP. Results: Partial volume overlap pitfalls were noted in 16 patients (8%) in group A. Little bile pitfalls in 4 (2%) in each group, ampullary stones pitfalls in 3 (1.5%) group A, one (0.5%) in group B, respiratory motions pitfalls in 11 (5.5%) group A. Vascular impression pitfalls in 9 (4.5%) group A, two (1%) in group B, and cystic duct-CBD junction pitfalls 2 (1%) in group A. Sphincter of Oddi contraction pitfalls 3 (1.5%) and Pneumobilia pitfalls 2 (1%) in each group. ERCP was the standard reference in this study, with calculated 80% sensitivity and 80% specificity of group A, compared to group B images which were 95.7% and 88% respectively. Conclusion: Many pitfalls could be encountered in MRCP, with resultant false judgment. So it should be carefully monitored with revisions of the source images, MRI and CT if needed, by the radiologist. Also, full past history is required before the final radiological conclusion. Keywords: MRCP, Pitfalls, Technical, Anatomical, Physiological, Post-intervention |
Databáze: | OpenAIRE |
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