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KMID : 1103720170770030157
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Journal of the Korean Society of Radiology
2017 Volume.77 No. 3 p.157 ~ p.165
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Clinical Significance of Short-Term Repeat Computed Tomography Examination on the Same Anatomic Region
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Hwang Joon-Seok
Paik Sang-Hyun
Park Jai-Soung
Lee Heon
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Abstract
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Purpose: To evaluate the clinical significance of repeat CT examination (RCE) of the same anatomical area within a month, for the accurate diagnosis and patient management.
Materials and Methods: Between October to December of 2013, our retrospective cohort enrolled 182 patients whose outside CT scans were registered in our PACS, and who underwent RCE of the same anatomical region within 1 month of the previous CT. The RCEs were classified into four categories: unrelated, follow-up, duplicative, and supplementary examinations. We then categorized the clinical significance of RCE, based on changes of clinical symptoms, management, and CT findings.
Results: Of the 182 patients enrolled, the classification based on unrelated, follow-up, duplicative, and supplementary examinations were 4 (2.2%), 114 (62.7%), 20 (11%), and 44 (24.1%) cases, respectively. Of these, appropriate examinations were 155 (85.2%) and inappropriate examinations were 27 (14.8%) cases. of the percentage of appropriate-unhelpful and inappropriate-helpful examinations were 4 cases (2.2%) and 5 cases (2.7%), respectively. Consequently, there were 9 cases (4.9%) of cause-clinical significance discordance (CCSD).
Conclusion: More than 80% of the RCEs were beneficial to clinical practice. The guideline for RCEs needs to be extensively broadcast, and used to train physicians to help reduce the number of not only CCSD, but also unhelpful RCEs, which were 4.9% and 14.3%, respectively, in our study.
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KEYWORD
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Tomography, X-Ray Computed, Classification, Guideline
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