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Related Concept Videos

Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
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Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

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Related Experiment Video

Updated: Jun 16, 2026

Radiation Planning Assistant - A Web-based Tool to Support High-quality Radiotherapy in Clinics with Limited Resources
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Published on: October 6, 2023

Optimizing efficiency in CT services: a data-driven approach using action logs from the radiology information system.

Shingo Kayano1, Hideki Ota2,3, Yoshihiko Takubo4

  • 1Department of Radiological Technology, Tohoku University Hospital, Sendai, Miyagi, Japan.

Japanese Journal of Radiology
|June 15, 2026
PubMed
Summary
This summary is machine-generated.

Radiology Information System (RIS) action log-guided continuous quality improvement (KAIZEN) significantly reduced CT examination times and improved operational efficiency. This workflow monitoring approach led to earlier weekday CT completion and shorter patient turnover.

Keywords:
Computed tomographyEfficiencyQuality improvementRadiology information systemWorkflow

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Area of Science:

  • Radiology and Medical Imaging
  • Healthcare Operations Management
  • Quality Improvement Science

Background:

  • Continuous quality improvement (KAIZEN) is crucial for optimizing healthcare operations.
  • Radiology Information Systems (RIS) generate valuable data logs for workflow analysis.
  • Previous studies have explored workflow optimization in CT departments.

Purpose of the Study:

  • To assess the impact of RIS action log-guided KAIZEN on CT operational efficiency.
  • To determine if KAIZEN interventions could reduce CT examination and patient turnover times.
  • To evaluate the effect on the completion time of daily CT operations.

Main Methods:

  • A single-center retrospective before-and-after study analyzed 150,540 weekday CT examinations (2018-2022).
  • Five workflow interventions were implemented sequentially in early 2021.
  • Segmented interrupted time-series regression analyzed median examination time, patient entry/exit time, and final CT completion time.

Main Results:

  • Median CT examination time decreased by 17.37 seconds (adjusted, p=0.015).
  • Patient entry/exit time decreased by 15.99 seconds (adjusted, p<0.001).
  • The final weekday CT examination concluded 12.49 minutes earlier (p=0.011).

Conclusions:

  • RIS action log-guided KAIZEN is associated with improved CT operational efficiency.
  • The methodology demonstrated reduced examination times and earlier workflow completion.
  • Routine log-based workflow monitoring is supported for CT departments.