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Diagnosis of acute pancreatitis by diffusion-weighted magnetic resonance imaging
İdil Güneş Tatar1, Hasan Aydın1, Kerim Bora Yılmaz2
1Clinic of Radiology, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey.
Abstract:
Diffusion-weighted magnetic resonance imaging has emerged as a successful technique in the early diagnosis of acute pancreatitis. An 82-year-old male patient suspected of acute pancreatitis refused to undergo intravenous contrast-enhanced abdominal computed tomography due to a history of previous allergic reactions to contrast medium. He was imaged with diffusion-weighted magnetic resonance imaging without the use of oral or intravenous contrast material. Diffuse hyperintensity in the pancreas with a relevant apparent diffusion coefficient map showing diffuse hypointensity was demonstrated. The findings were interpreted as restricted diffusion and were diagnostic for acute pancreatitis. Diffusion-weighted magnetic resonance imaging, an imaging modality that does not involve ionizing radiation and does not require the use of contrast material, can successfully demonstrate the manifestations of acute pancreatitis.
Insights
Diffusion-weighted magnetic resonance imaging successfully diagnosed acute pancreatitis in a patient allergic to contrast agents. This radiation-free MRI technique offers a safe alternative for early pancreatitis detection.
Area of Science:
- Radiology
- Medical Imaging
Background:
- Acute pancreatitis diagnosis often relies on contrast-enhanced imaging.
- Patient presented with contraindications to contrast media (allergic reaction).
Observation:
- An 82-year-old male patient with suspected acute pancreatitis was evaluated.
- Intravenous contrast-enhanced abdominal computed tomography was refused due to prior allergic reactions.
- Diffusion-weighted magnetic resonance imaging (DW-MRI) was performed without oral or intravenous contrast.
Findings:
- DW-MRI demonstrated diffuse pancreatic hyperintensity.
- Apparent diffusion coefficient (ADC) maps showed diffuse hypointensity.
- These findings indicated restricted diffusion, diagnostic for acute pancreatitis.
Implications:
- DW-MRI is a viable, contrast-free imaging modality for acute pancreatitis.
- This technique avoids ionizing radiation, enhancing patient safety.
- Offers an alternative diagnostic pathway for patients with contrast allergies.
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Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
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