Impact of proton beam availability on patient treatment schedule in radiation oncology

Eric D. Miller, Vladimir Derenchuk, Indra J. Das, Peter A S Johnstone

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Proton beam therapy offers unique physical properties with potential for reduced toxicity and better patient care. There is an increased interest in radiation oncology centers to acquire proton therapy capabilities. The operation of a proton treatment center is quite different than a photon-based clinic because of the more complex technology involved, as well as the single proton beam source serving multiple treatment rooms with no backup source available. There is limited published data which investigates metrics that can be used to determine the performance of a proton facility. The purpose of this study is to evaluate performance metrics of Indiana University Cyclotron Operations (IUCO), including availability, mean time between failures, and mean time to repair, and to determine how changes in these metrics impact patient treatments. We utilized a computerized maintenance management system to log all downtime occurrences and servicing operations for the facility. These data were then used to calculate the availability as well as the mean time between failures and mean time to repair. Impact on patient treatments was determined by analyzing delayed and missed treatments, which were recorded in an electronic medical record and database maintained by the therapists. The availability of the IUCO proton beam has been increasing since beginning of operation in 2003 and averaged 96.9% for 2009 through 2011. The mean time between failures and mean time to repair were also determined and correlated with improvements in the maintenance and operating procedures of the facility, as well as environmental factors. It was found that events less than 15 minutes in duration have minimal impact on treatment delays, while events lasting longer than one hour may result in missed treatments. The availability of the proton beam was more closely correlated with delayed than with missed treatments, demonstrating the utility and limitations of the availability metric. In conclusion, we suggest that the availability metric and other performance parameters, such as the mean time between failures and the mean time to repair, should be used in combination with downtime impact on patient treatments in order to adequately evaluate the operational success of a proton therapy facility.

Original languageEnglish
Pages (from-to)134-146
Number of pages13
JournalJournal of Applied Clinical Medical Physics
Volume13
Issue number6
StatePublished - 2012

Fingerprint

Patient treatment
Radiation Oncology
Oncology
Proton beams
schedules
proton beams
availability
Protons
Appointments and Schedules
Availability
MTBF
Radiation
Repair
radiation
Proton Therapy
Cyclotrons
therapy
downtime
Therapeutics
protons

Keywords

  • Beam availability
  • Health services research
  • Proton therapy
  • Quality
  • Uptime

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiation
  • Instrumentation

Cite this

Miller, E. D., Derenchuk, V., Das, I. J., & Johnstone, P. A. S. (2012). Impact of proton beam availability on patient treatment schedule in radiation oncology. Journal of Applied Clinical Medical Physics, 13(6), 134-146.

Impact of proton beam availability on patient treatment schedule in radiation oncology. / Miller, Eric D.; Derenchuk, Vladimir; Das, Indra J.; Johnstone, Peter A S.

In: Journal of Applied Clinical Medical Physics, Vol. 13, No. 6, 2012, p. 134-146.

Research output: Contribution to journalArticle

Miller, ED, Derenchuk, V, Das, IJ & Johnstone, PAS 2012, 'Impact of proton beam availability on patient treatment schedule in radiation oncology', Journal of Applied Clinical Medical Physics, vol. 13, no. 6, pp. 134-146.
Miller, Eric D. ; Derenchuk, Vladimir ; Das, Indra J. ; Johnstone, Peter A S. / Impact of proton beam availability on patient treatment schedule in radiation oncology. In: Journal of Applied Clinical Medical Physics. 2012 ; Vol. 13, No. 6. pp. 134-146.
@article{0947c1cd57d8485a950a84a1e11966d1,
title = "Impact of proton beam availability on patient treatment schedule in radiation oncology",
abstract = "Proton beam therapy offers unique physical properties with potential for reduced toxicity and better patient care. There is an increased interest in radiation oncology centers to acquire proton therapy capabilities. The operation of a proton treatment center is quite different than a photon-based clinic because of the more complex technology involved, as well as the single proton beam source serving multiple treatment rooms with no backup source available. There is limited published data which investigates metrics that can be used to determine the performance of a proton facility. The purpose of this study is to evaluate performance metrics of Indiana University Cyclotron Operations (IUCO), including availability, mean time between failures, and mean time to repair, and to determine how changes in these metrics impact patient treatments. We utilized a computerized maintenance management system to log all downtime occurrences and servicing operations for the facility. These data were then used to calculate the availability as well as the mean time between failures and mean time to repair. Impact on patient treatments was determined by analyzing delayed and missed treatments, which were recorded in an electronic medical record and database maintained by the therapists. The availability of the IUCO proton beam has been increasing since beginning of operation in 2003 and averaged 96.9{\%} for 2009 through 2011. The mean time between failures and mean time to repair were also determined and correlated with improvements in the maintenance and operating procedures of the facility, as well as environmental factors. It was found that events less than 15 minutes in duration have minimal impact on treatment delays, while events lasting longer than one hour may result in missed treatments. The availability of the proton beam was more closely correlated with delayed than with missed treatments, demonstrating the utility and limitations of the availability metric. In conclusion, we suggest that the availability metric and other performance parameters, such as the mean time between failures and the mean time to repair, should be used in combination with downtime impact on patient treatments in order to adequately evaluate the operational success of a proton therapy facility.",
keywords = "Beam availability, Health services research, Proton therapy, Quality, Uptime",
author = "Miller, {Eric D.} and Vladimir Derenchuk and Das, {Indra J.} and Johnstone, {Peter A S}",
year = "2012",
language = "English",
volume = "13",
pages = "134--146",
journal = "Journal of Applied Clinical Medical Physics",
issn = "1526-9914",
publisher = "American Institute of Physics Publising LLC",
number = "6",

}

TY - JOUR

T1 - Impact of proton beam availability on patient treatment schedule in radiation oncology

AU - Miller, Eric D.

AU - Derenchuk, Vladimir

AU - Das, Indra J.

AU - Johnstone, Peter A S

PY - 2012

Y1 - 2012

N2 - Proton beam therapy offers unique physical properties with potential for reduced toxicity and better patient care. There is an increased interest in radiation oncology centers to acquire proton therapy capabilities. The operation of a proton treatment center is quite different than a photon-based clinic because of the more complex technology involved, as well as the single proton beam source serving multiple treatment rooms with no backup source available. There is limited published data which investigates metrics that can be used to determine the performance of a proton facility. The purpose of this study is to evaluate performance metrics of Indiana University Cyclotron Operations (IUCO), including availability, mean time between failures, and mean time to repair, and to determine how changes in these metrics impact patient treatments. We utilized a computerized maintenance management system to log all downtime occurrences and servicing operations for the facility. These data were then used to calculate the availability as well as the mean time between failures and mean time to repair. Impact on patient treatments was determined by analyzing delayed and missed treatments, which were recorded in an electronic medical record and database maintained by the therapists. The availability of the IUCO proton beam has been increasing since beginning of operation in 2003 and averaged 96.9% for 2009 through 2011. The mean time between failures and mean time to repair were also determined and correlated with improvements in the maintenance and operating procedures of the facility, as well as environmental factors. It was found that events less than 15 minutes in duration have minimal impact on treatment delays, while events lasting longer than one hour may result in missed treatments. The availability of the proton beam was more closely correlated with delayed than with missed treatments, demonstrating the utility and limitations of the availability metric. In conclusion, we suggest that the availability metric and other performance parameters, such as the mean time between failures and the mean time to repair, should be used in combination with downtime impact on patient treatments in order to adequately evaluate the operational success of a proton therapy facility.

AB - Proton beam therapy offers unique physical properties with potential for reduced toxicity and better patient care. There is an increased interest in radiation oncology centers to acquire proton therapy capabilities. The operation of a proton treatment center is quite different than a photon-based clinic because of the more complex technology involved, as well as the single proton beam source serving multiple treatment rooms with no backup source available. There is limited published data which investigates metrics that can be used to determine the performance of a proton facility. The purpose of this study is to evaluate performance metrics of Indiana University Cyclotron Operations (IUCO), including availability, mean time between failures, and mean time to repair, and to determine how changes in these metrics impact patient treatments. We utilized a computerized maintenance management system to log all downtime occurrences and servicing operations for the facility. These data were then used to calculate the availability as well as the mean time between failures and mean time to repair. Impact on patient treatments was determined by analyzing delayed and missed treatments, which were recorded in an electronic medical record and database maintained by the therapists. The availability of the IUCO proton beam has been increasing since beginning of operation in 2003 and averaged 96.9% for 2009 through 2011. The mean time between failures and mean time to repair were also determined and correlated with improvements in the maintenance and operating procedures of the facility, as well as environmental factors. It was found that events less than 15 minutes in duration have minimal impact on treatment delays, while events lasting longer than one hour may result in missed treatments. The availability of the proton beam was more closely correlated with delayed than with missed treatments, demonstrating the utility and limitations of the availability metric. In conclusion, we suggest that the availability metric and other performance parameters, such as the mean time between failures and the mean time to repair, should be used in combination with downtime impact on patient treatments in order to adequately evaluate the operational success of a proton therapy facility.

KW - Beam availability

KW - Health services research

KW - Proton therapy

KW - Quality

KW - Uptime

UR - http://www.scopus.com/inward/record.url?scp=84873538501&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873538501&partnerID=8YFLogxK

M3 - Article

VL - 13

SP - 134

EP - 146

JO - Journal of Applied Clinical Medical Physics

JF - Journal of Applied Clinical Medical Physics

SN - 1526-9914

IS - 6

ER -