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Computed Tomography01:10

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Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
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Less Dose, Same Care: Evaluating Computed Tomography Utilization for Pediatric Appendicitis.

Krysta M Sutyak1, Isabella Anderson1, Yasmine Young1

  • 1Department of Pediatric Surgery, University of Texas Health Science Center at Houston, Houston, TX; Center for Surgical Trials and Evidence-Based Practice (CSTEP), UTHSC at Houston, Houston, TX.

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This summary is machine-generated.

An ultrasonography-first protocol significantly reduced computed tomography (CT) use for pediatric appendicitis. Radiation doses from CT scans at system hospitals were lower than at non-system hospitals, with opportunities for further dose reduction.

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Area of Science:

  • Pediatric Imaging
  • Radiology
  • Appendicitis Diagnosis

Background:

  • Computed tomography (CT) rates for appendicitis diagnosis were high.
  • An ultrasonography-first, magnetic resonance imaging-second protocol was implemented to reduce CT utilization.
  • Attention to dose reduction was a key component of the new protocol.

Purpose of the Study:

  • To compare current CT usage for appendicitis in pediatric patients.
  • To report radiation doses from CT scans at system and non-system hospitals.
  • To evaluate the impact of a new imaging protocol on CT rates and radiation exposure.

Main Methods:

  • Retrospective study of pediatric patients who underwent appendectomy with preoperative CT (June 2020-June 2023).
  • Abstraction of demographics and imaging details from medical records.
  • Calculation of size-specific dose estimates (SSDE) and effective dose estimates (EDE) for CT scans.
  • Comparison of SSDE with American College of Radiology (ACR) Dose Index Registry (DIR) diagnostic reference levels (DRLs).

Main Results:

  • CT use for appendicitis decreased by 56% (29% of patients received CT) after protocol implementation.
  • Median SSDE was 9.1 mGy at system hospitals vs. 11.0 mGy at non-system hospitals.
  • Median EDE was 5.1 mSv at system hospitals vs. 6.7 mSv at non-system hospitals.
  • A significant proportion of CT scans at both system (34%) and non-system (49%) hospitals exceeded ACR DIR DRLs.

Conclusions:

  • The ultrasonography-first, MRI-second protocol significantly reduced CT utilization for pediatric appendicitis.
  • CT radiation doses at system hospitals were generally lower than at non-system hospitals.
  • Protocol optimization and adherence to DRLs are crucial for minimizing radiation exposure in pediatric imaging.