PMID- 27609191
OWN - NLM
STAT- MEDLINE
DCOM- 20170508
LR  - 20220321
IS  - 1349-9157 (Electronic)
IS  - 0449-3060 (Print)
IS  - 0449-3060 (Linking)
VI  - 58
IP  - 1
DP  - 2017 Jan
TI  - A surveillance study of the current status of reirradiation and patterns of 
      practice.
PG  - 71-78
LID - 10.1093/jrr/rrw059 [doi]
AB  - The aim of this study was to survey the current status of reirradiation (Re-RT) 
      and patterns of practice in Japan. An email questionnaire was sent to Kansai 
      Cancer Therapist Group partner institutions, using questions similar to those in 
      the Canadian radiation oncologist (RO) survey (2008). A total of 34 ROs from 28 
      institutions returned the survey. All 28 institutions experienced Re-RT cases in 
      2014. However, 26 of the 28 institutions (93%) reported difficulty in obtaining 
      Re-RT case information from their respective databases. Responses from 19 
      institutions included the number of Re-RT cases; this rose from 183 in the period 
      2005-2009 (institution median = 4; 2-12.9) to 562 in the period 2010-2014 
      (institution median = 26; 2-225). Important considerations for indication of 
      Re-RT were age (65%), performance status (83%), life expectancy (70%), absence of 
      distant metastases (67%), and interval since previous treatment (73%). Previous 
      total radiation dose (48%), volume of tissue irradiated (72%), and the 
      biologically equivalent dose (BED; 68.5%) were taken into account during Re-RT 
      planning. These factors were similar to those considered in the Canadian survey; 
      however, the present study did not consider age. In eight site-specific 
      scenarios, barring central nervous system recurrence, more than 90% of ROs agreed 
      to perform Re-RT, which was higher than the percentage observed in the Canadian 
      survey. Re-RT cases have increased in number and aroused interest among ROs in 
      this decade of advanced technology. However, consensus building to establish 
      guidelines for the practice and prospective evaluation of Re-RT is required.
CI  - (c) The Author 2016. Published by Oxford University Press on behalf of The Japan 
      Radiation Research Society and Japanese Society for Radiation Oncology.
FAU - Yamazaki, Hideya
AU  - Yamazaki H
AD  - Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural 
      University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 
      602-8566, Japan hideya10@hotmail.com.
FAU - Fushiki, Masato
AU  - Fushiki M
AD  - Department of Radiation Oncology, Nagahama City Hospital, Nagahama, Shiga, Japan.
FAU - Mizowaki, Takashi
AU  - Mizowaki T
AD  - Department of Radiation Oncology and Image-applied Therapy, Graduate School of 
      Medicine, Kyoto University, Kyoto, Japan.
CN  - the Kansai Cancer Therapist Group
LA  - eng
PT  - Journal Article
DEP - 20160908
PL  - England
TA  - J Radiat Res
JT  - Journal of radiation research
JID - 0376611
SB  - IM
MH  - Attitude of Health Personnel
MH  - Demography
MH  - Humans
MH  - *Population Surveillance
MH  - Practice Patterns, Physicians'/*statistics & numerical data
MH  - Radiotherapy Planning, Computer-Assisted
MH  - Re-Irradiation/*statistics & numerical data/*trends
PMC - PMC5321179
OTO - NOTNLM
OT  - questionnaire
OT  - reirradiation
EDAT- 2016/09/10 06:00
MHDA- 2017/05/10 06:00
PMCR- 2017/01/23
CRDT- 2016/09/10 06:00
PHST- 2016/01/05 00:00 [received]
PHST- 2016/03/24 00:00 [revised]
PHST- 2016/05/01 00:00 [accepted]
PHST- 2016/09/10 06:00 [pubmed]
PHST- 2017/05/10 06:00 [medline]
PHST- 2016/09/10 06:00 [entrez]
PHST- 2017/01/23 00:00 [pmc-release]
AID - rrw059 [pii]
AID - 10.1093/jrr/rrw059 [doi]
PST - ppublish
SO  - J Radiat Res. 2017 Jan;58(1):71-78. doi: 10.1093/jrr/rrw059. Epub 2016 Sep 8.