A Survey of Institutions with Sixteen Detector-Rows or More CT Scanners for the Introduction of National Lung Cancer Screening Program Using Low-Dose Chest CT

Jae Gu Oh; Sang Hyun Paik; Beom Suck Kim; Jae Myeong Lee; Jin Mo Goo

doi:10.3348/jksr.2017.77.6.404

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Oh, Paik, Kim, Lee, and Goo: A Survey of Institutions with Sixteen Detector-Rows or More CT Scanners for the Introduction of National Lung Cancer Screening Program Using Low-Dose Chest CT

Original Article

J Korean Soc Radiol 2017;77(6):404-411.

Published online: 19 January 2017

DOI: https://doi.org/10.3348/jksr.2017.77.6.404

A Survey of Institutions with Sixteen Detector-Rows or More CT Scanners for the Introduction of National Lung Cancer Screening Program Using Low-Dose Chest CT

Jae Gu Oh, MD¹, Sang Hyun Paik, MD^*,^1,², Beom Suck Kim², Jae Myeong Lee, MD¹, Jin Mo Goo, MD³

¹Department of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital, Bucheon, Korea

²Korean Institute for Accreditation of Medical Imaging, Seoul, Korea

³Department of Radiology, Seoul National University Hospital, Seoul National University Collage of Medicine, Seoul, Korea

^*Corresponding author: Sang Hyun Paik, MD Department of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon 14584, Korea. Tel. 82-32-621-5851 Fax. 82-32-621-5874 E-mail: radpsh@schmc.ac.kr

Received 12 April 201712 May 2017 Accepted 6 August 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

To survey medical institutions in Korea that conduct chest low-dose com-puted tomography (LDCT) scan prior to introduction of the national lung cancer screening (LCS) project.

Materials and Methods

From July-October 2016, a survey was conducted in 366 institutions that use CT scanner with 16 detector-rows or more. After explaining the purpose of this study to personnel of institutions or health care centers via phone, an online survey was conducted by sending a questionnaire link to personnel through e-mail or text message.

Results

Among 366 medical institutions, 282 responded to conduct LDCT scan for LCS. The most frequently used CT section thickness was 5 mm and only 29 institutions comply with Korean guidelines for LCS. The number of institutions that employ a full time radiologist was 330. LDCT scan protocols and CT radiation dose structured reporting system were established in 305 and 302 institutions, respectively. Fifty-nine institutions knew about Lung-RADS and only 14 used it.

Conclusion

Many of the institutions with 16 detector-row or more CT scanners did not meet Korean guidelines for LSC. Appropriate education and promotion is needed to improve and sustain the quality of LDCT for LCS.

Keywords: Surveys, Tomography, X-Ray Computed, Lung Neoplasms, Mass Screening

REFERENCES

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Fig. 1.

Distribution of CT scanner with 16 detector-rows or more (percentage distribution) (2015, Korean Institute for Accreditation of Medical Imaging).

Fig. 2.

Flow diagram of survey.

Fig. 3.

Number of chest low-dose computed tomography scans per month.

Fig. 4.

Number of conventional chest CT scans per month.

Fig. 5.

CT scanner manufacturer.

Table 1.

Number of Detector Slice of CT Scanner

Number of Rows	Number of CT Scanner (%)
16	83 (29.4)
64	91 (32.3)
80	3 (1.0)
128	85 (30.1)
256	14 (5.0)
320	2 (0.7)
Non response	4 (1.4)
Total	282 (100.0)

Table 2.

Number of CT Scanner by Number of Rows and Type of Medical Institute (2015, Korean Institute for Accreditation of Medical Imaging)

Number of Rows	Clinic	Convalescent Hospital	Hospital	General Hospital	Number of CT Scanner (%)
Conventional	88	1	30	0	119 (6.14)
1	124	2	162	13	301 (15.52)
2	71	1	119	5	196 (10.11)
4	70	0	134	31	235 (12.12)
6	12	1	35	18	66 (3.40)
8	8	0	18	11	37 (1.91)
16	58	0	159	137	354 (18.26)
20	2	0	1	1	4 (0.21)
40	1	0	2	3	6 (0.31)
64	43	1	45	261	350 (18.05)
128	35	0	35	160	230 (11.86)
160	3	0	0	13	16 (0.83)
256	1	0	0	14	15 (0.77)
320	0	0	0	9	9 (0.46)
640	0	0	0	1	1 (0.05)
Total (%)	516 (26.61)	6 (0.31)	740 (38.16)	677 (34.91)	1939 (100.00)

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