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Tae Hyun Kim
, Hong-Gyun Wu
, Soon-Hyun Ahn
, Woo-Jin Jeong
, Wonjae Cha
, Keun-Yong Eom
Radiat Oncol J.
2024;42(3):192-199. Published online 2024 Sep 25 DOI:
https://doi.org/10.3857/roj.2024.00164
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Sapna Nangia
, Nagarjuna Burela
, M. P. Noufal
, Kartikeswar Patro
, Manoj Gulabrao Wakde
, Dayanada S. Sharma
Radiat Oncol J.
2023;41(2):69-80. Published online 2023 Jun 1 DOI:
https://doi.org/10.3857/roj.2023.00073
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Web of Science 5
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Adam Burr
, Paul Harari
, Aaron Wieland
, Randall Kimple
, Gregory Hartig
, Matthew Witek
Radiat Oncol J.
2022;40(4):225-231. Published online 2022 Dec 2 DOI:
https://doi.org/10.3857/roj.2022.00311
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Clinical Investigations
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Budhi Singh Yadav
, Shipra Gupta
, Divya Dahiya
, Ankita Gupta
, Arun Singh Oinam
Radiat Oncol J.
2022;40(2):127-140. Published online 2022 Jun 20 DOI:
https://doi.org/10.3857/roj.2021.01053
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Web of Science 7
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Hye In Lee
, Jin Ho Kim
, Soon-Hyun Ahn
, Eun-Jae Chung
, Bhumsuk Keam
, Keun-Yong Eom
, Woo-Jin Jeong
, Ji-Won Kim
, Chan Woo Wee
, Hong-Gyun Wu
Radiat Oncol J.
2021;39(4):279-287. Published online 2021 Dec 7 DOI:
https://doi.org/10.3857/roj.2021.00640
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Web of Science 10
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, Sang Min Yoon
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, Jin-hong Park
, Jinhong Jung
, Eun Kyung Choi
Radiat Oncol J.
2021;39(3):202-209. Published online 2021 Sep 9 DOI:
https://doi.org/10.3857/roj.2021.00416
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, Tej Prakash Soni
, Nidhi Patni
, Dinesh Kumar Singh
, Naresh Jakhotia
, Anil Kumar Gupta
, Lalit Mohan Sharma
, Shantanu Sharma
, Ravindra Singh Gothwal
Radiat Oncol J.
2021;39(1):15-23. Published online 2021 Mar 18 DOI:
https://doi.org/10.3857/roj.2020.01018
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, Daniela Corvi
, Giuseppe De Nobili
, Alessandro Alghisi
, Francesco Colangelo
, Alessandra Cocchi
, Fausto Declich
, Carlo Pietro Soatti
Radiat Oncol J.
2020;38(4):287-290. Published online 2020 Dec 28 DOI:
https://doi.org/10.3857/roj.2020.00983
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Cecil M. Benitez
, Susan J. Knox
Radiat Oncol J.
2020;38(4):226-235. Published online 2020 Nov 25 DOI:
https://doi.org/10.3857/roj.2020.00556
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Web of Science 6
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Clinical Investigations
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Jae Wang Kim
, Byung Min Yun
, Myoung Soo Shin
, Jae Kyoung Kang
, JungJu Kim
, Young Suk Kim
Radiat Oncol J.
2019;37(4):293-301. Published online 2019 Dec 31 DOI:
https://doi.org/10.3857/roj.2019.00381
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Hyo Chun Lee
, Jong Hoon Lee
, Sea-Won Lee
, Joo Hwan Lee
, Mina Yu
, Hong Seok Jang
, Sung Hwan Kim
Radiat Oncol J.
2019;37(4):279-285. Published online 2019 Dec 31 DOI:
https://doi.org/10.3857/roj.2019.00430
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Web of Science 3
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Clinical Investigationses
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, Kitwadee Saksornchai
, Sivalee Suriyapee
Radiat Oncol J.
2019;37(3):201-206. Published online 2019 Sep 30 DOI:
https://doi.org/10.3857/roj.2019.00290
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Web of Science 10
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Jeong Il Yu
, Gyu Sang Yoo
, Sungkoo Cho
, Sang Hoon Jung
, Youngyih Han
, Seyjoon Park
, Boram Lee
, Wonseok Kang
, Dong Hyun Sinn
, Yong-Han Paik
, Geum-Youn Gwak
, Moon Seok Choi
, Joon Hyeok Lee
, Kwang Cheol Koh
, Seung Woon Paik
, Hee Chul Park
Radiat Oncol J.
2018;36(1):25-34. Published online 2018 Mar 29 DOI:
https://doi.org/10.3857/roj.2017.00409
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Web of Science 15
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Clinical Investigations
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, Jinhyun Choi
, Sung Gwe Ahn
, Joon Jeong
, Ik Jae Lee
, Kwangwoo Park
, Kangpyo Kim
, Jun Won Kim
Radiat Oncol J.
2017;35(2):121-128. Published online 2017 Jun 30 DOI:
https://doi.org/10.3857/roj.2017.00150
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Web of Science 17
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Hye Jin Kang, Chul-Seung Kay, Seok Hyun Son, Myungsoo Kim, In Young Jo, So Jung Lee, Dong Hwan Lee, Hong Jin Suh, Yong Sun Choi
Radiat Oncol J.
2016;34(1):45-51. Published online 2016 Mar 30 DOI:
https://doi.org/10.3857/roj.2016.34.1.45
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Web of Science 5
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Seung Won Seol, Jeong Il Yu, Hee Chul Park, Do Hoon Lim, Dongryul Oh, Jae Myoung Noh, Won Kyung Cho, Seung Woon Paik
Radiat Oncol J.
2015;33(4):276-283. Published online 2015 Dec 30 DOI:
https://doi.org/10.3857/roj.2015.33.4.276
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Web of Science 16
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Radiat Oncol J.
2014;32(2):57-62. Published online 2014 Jun 30 DOI:
https://doi.org/10.3857/roj.2014.32.2.57
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Physics Contributions
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Ha Yoon Lee, Jee Suk Chang, Ik Jae Lee, Kwangwoo Park, Yong Bae Kim, Chang Ok Suh, Jun Won Kim, Ki Chang Keum
Radiat Oncol J.
2013;31(4):239-246. Published online 2013 Dec 31 DOI:
https://doi.org/10.3857/roj.2013.31.4.239
Full text
PubReader
ePub
PDF
Crossref 45
Clinical Investigations
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a
p
y
Young Suk Kim, Chang Geol Lee, Kyung Hwan Kim, Taehyung Kim, Joohwan Lee, Yona Cho, Woong Sub Koom
Radiat Oncol J.
2012;30(4):182-188. Published online 2012 Dec 31 DOI:
https://doi.org/10.3857/roj.2012.30.4.182
Full text
PubReader
ePub
PDF
Crossref 27
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a
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Jihye Cha, Jinsil Seong, Ki Chang Keum, Chang Geol Lee, Woong Sub Koom
Radiat Oncol J.
2011;29(4):236-242. Published online 2011 Dec 28 DOI:
https://doi.org/10.3857/roj.2011.29.4.236
Full text
PubReader
ePub
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Crossref 1
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O Kyu Noh, Sung Ho Park, Seung Do Ahn, Eun Kyung Choi, Sang Wook Lee, Si Yeol Song, Sang Min Yoon, Jong Hoon Kim
J Korean Soc Ther Radiol Oncol.
2010;28(1):23-31. DOI:
https://doi.org/10.3857/jkstro.2010.28.1.23
PDF
Crossref 1
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Jihae Lee, Hyun Suk Suh, Kyung Ja Lee, Rena Lee, Myungsoo Kim
J Korean Soc Ther Radiol Oncol.
2008;26(4):237-246. DOI:
https://doi.org/10.3857/jkstro.2008.26.4.237
PDF
I
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Hyoung Cheol Kwon, Jeong Seob Park, Dong Seong Choi
J Korean Soc Ther Radiol Oncol.
2007;25(3):185-191.
PDF
R
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Sung Ho Moon, Tae Jung Kim, Keun Young Eom, Jee Hyun Kim, Sung Won Kim, Jae Sung Kim, In Ah Kim
J Korean Soc Ther Radiol Oncol.
2007;25(2):109-117.
PDF
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Won Sup Yoon, Dae Sik Yang, Chul Yong Kim
J Korean Soc Ther Radiol Oncol.
2007;25(2):101-108.
PDF
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Youngmin Choi, Hyung Sik Lee, Won Joo Hur, Moon Seok Cha, Hyun Ho Kim
J Korean Soc Ther Radiol Oncol.
2006;24(4):248-254.
PDF
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Hyoung Cheol Kwon, Jin Ki Kim, Jung Soo Kim, Dong Seong Choi
J Korean Soc Ther Radiol Oncol.
2000;18(3):200-204.
PDF
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Hyoung Cheol Kwon, Moon Sik Yang
J Korean Soc Ther Radiol Oncol.
2000;18(2):133-137.
PDF
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J Korean Soc Ther Radiol.
1994;12(3):301-306.
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1
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Journal Impact Factor 1.8