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Radiation dose from computed tomography in patients with acute pancreatitis: an audit from a tertiary care referral hospital

  • Pancreas
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Abstract

Background

There is a limited data on the radiation dose from computed tomography (CT) in patients with acute pancreatitis (AP). The present study evaluated the radiation dose from CT scans in patients with AP.

Material

A retrospective review of CT reports of patients with AP was conducted. The type of CT scan (non-contrast vs. single-phase vs. biphasic CT) was recorded. The mean number of CT scans and cumulative radiation dose was calculated. The indications and abnormalities on biphasic CT scans were recorded. The radiation doses between different types of the scan were compared.

Results

495 CT studies in 351 patients were evaluated. In patients (n = 78, 22.2%) undergoing multiple CT scans, mean number of CT scans per patient and mean radiation dose were 2.64 ± 1.18 (range 2–9) and 24 ± 15 mSv (range 8.3–79.8 mSv), respectively. The mean radiation dose was significantly greater in patients with modified CT severity index ≥ 8 (n = 63) [25.08 mSv vs. 18.96 mSv, (P = 0.048)]. 61 (12.32%) biphasic scans were performed. A definite indication for a biphasic CT scan was identified in 20 (32.7%) patients. Arterial abnormalities were detected in 6 (9.8%) patients undergoing CT for defined indication. Mean radiation dose in this group was 13.26 ± 7.64 mSv (range 3.42–38.27 mSv) which was significantly greater than the single venous phase scan (7.96 ± 3.48 mSv, P < 0.001).

Conclusion

There is a potential for substantial radiation exposure from CT scans to patients with AP. Patients with severe AP and those undergoing biphasic scans have significantly higher radiation exposure. Hence, routine arterial phase acquisition should be avoided.

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Authors and Affiliations

  1. Department of Radiodiagnosis and Imaging, Section of GE Radiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India

    Pankaj Gupta, Rishabh Jain, Suzanne Koshi, Ajay Gulati & Manavjit Singh Sandhu

  2. Department of Gastroenterology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India

    Jayanta Samanta, Harshal Mandavdhare, Vishal Sharma, Saroj K. Sinha, Usha Dutta & Rakesh Kochhar

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  1. Pankaj Gupta
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  2. Rishabh Jain
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  4. Ajay Gulati
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Correspondence to Pankaj Gupta.

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Gupta, P., Jain, R., Koshi, S. et al. Radiation dose from computed tomography in patients with acute pancreatitis: an audit from a tertiary care referral hospital. Abdom Radiol 45, 1517–1523 (2020). https://doi.org/10.1007/s00261-020-02408-7

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  • DOI: https://doi.org/10.1007/s00261-020-02408-7

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