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System Improvement to Increase Last Case Efficiency in a busy PET-CT Center
Bineyam Gebrewold1 M.P.H., C.N.M.T. , R.T. (N) (C.T.) , Corina Voicu2 C.N.M.T. , R.T. (C.T.) Esther Mena2 M.D. , Natarsha Fields2 PSC 2, Rathan Subramanian2 M.D., Ph.D.
The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, U.S.A.
Work flow efficiency is highly impacted by the timeliness of all the
cases through the day in a department like PET-CT that require
longer physiological preparation before a scan can be done. At
Johns Hopkins PET center patient scheduling is handled very
carefully to avoid camera down time between subsequent patients
throughout the day. Any delay between continuous patients will
have a compounding effect on the remaining cases and results in
delayed completion of the last case scheduled for the day that
might necessitate unplanned residents and staff overtime.
The Residents overtime violates the residency duty hours standard
set by Accreditation Council for Graduate Medical Education
(ACGME). Moreover the Technologists overtime may lower staff
satisfaction and incurs additional avoidable expense to the
department.
Objectives
Introduction
The objective of this study is to apply lean sigma quality
improvement principles in an effort to improve last-case
efficiency in our PET-CT department leading to reduction in
unplanned over time, compliance with residency duty hours,
and increase staff and patient satisfaction.
Conclusion
Systematic study of workflow efficiency and application
practical interventions using quality improvement principles
like lean sigma can significantly enhance efficiency of
imaging departments.
JHU PET-CT Percentage distribution of Last Patient from Sep,
2014 - April, 2015
A lean sigma quality improvement principle that constitutes
five stages namely define, measure, analyze, improve and
control was used. A multi-disciplinary team including Patient
Service Coordinators, Technologists, and physicians formed a
team to assess the problem and propose solutions to improve
last case efficiency in the department. A data collection form
was created to record the completion time for the last case
of the day. At the end of each month these data will be
compared with the computer generated time stamps from the
radiology information system. Then the data will be analyzed
and shared with the staff and management team responsible
to determine and implement the appropriate intervention
required to improve the last case efficiency. This process
continued for six month starting from September, 2014 until
the target goal was achieved in April, 2015.
The percentage of last case completion on or before 5:00 pm showed a 44 % increase from a
baseline of 47% (7) in September, 2014 to 91% (20) in April, 2015. Similarly, cases completed
between 5:01 and 6:00 pm significantly declined from 46% (7) in September, 2014 to 9% (2) in
April, 2015. Whereas the 7% completion rate for the after 6:00 pm was completely eliminated to
zero.
The average last case completion time from September 2014 through April, 2015 was 4:22 pm
with a standard deviation of 9 minutes and 95% confidence interval between (4:04 - 4:40). The
latest completion time was 6:53 and earliest completion time was 12:30. Technologists and
Residents overtime hours decreased from average of 2 hrs. per day from September, 2014 to zero
in April, 2015. On the contrary, patient volume increased by 20 % from September, 2014 to April
2015.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
September October November December January February March April
47%
60%
76%
65%
85%
80%
73%
91%
Before 5:00 5:00-5:30 5:31-6:00 After 6:00
91% of last cases completed
before 5:00 pm by April,
2015.
Patient volume increased by
from September, 2014.
No Staff overtime reported
for the last three months.
I
n
c
r
e
a
s
e
I
n
c
r
e
a
s
e
44 %
Project Charter: System Improvement to Increase Last-Case Efficiency in a busy PET-CT Center Champion:
Rathan Subramanian M.D., Ph.D.
Quality Advisor: Jeff Leal
Problem Statement:
Work flow efficiency is highly impacted by the timeliness of the first-case of the day in a department like PET-CT
that require longer physiological preparation before a scan can be done. Patient scheduling in PET-CT is carefully
designed to avoid camera down time, as soon as a patient scan is completed the next one will follow with in a
minute. Any delay in a patient scan will have a cascade effect on the subsequent scans leading to poor last case
completion rate and unplanned overtime.​
Project Goal:
To improve last-case efficiency in PET-CT department from base line of
47 % in September 2014 to 90 % in February 2015.
Project Y / Path-Y:
Percentage of last cases completed before 5:00 pm.
Scope:
First and last case of the day in PET-CT division from September 2014 to
April 2015.
Team Members:
Bineyam Gebrewold: Project leader
Corina Voicu : member (Sr. Technologist)
Esther Mena : member (Physician)
Natarsha Fields : member (PSC)
Benefits:
Minimize unplanned over time.
Compliance with residency duty hours set by ACGME.
Increase staff satisfaction.
Increase patient satisfaction.
Results
• Start the first case 30 minutes earlier
(6:30 am)
• Change in patient scheduling.
- No in-patients in late afternoon
- Reduce successive inpatients
- No cardiac viability after 12:00 pm.
47%
33%
13%
7%
JHU PET/CT Percentage distribution of Last
Patient Of the Day for September, 2014
91%
9%
0% 0%
JHU PET/CT Percentage distribution of Last
Patient Of the Day for April 2015
• Change in residents work distribution.
• Change in Staff schedule. (Add early techs)
• Eliminated unnecessary delayed scans.
• Staff education and empowerment.
Base Line Post Intervention
Interventions Results
Materials and Methods

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SNM Abstract poster B.M. Gebrewold

  • 1. System Improvement to Increase Last Case Efficiency in a busy PET-CT Center Bineyam Gebrewold1 M.P.H., C.N.M.T. , R.T. (N) (C.T.) , Corina Voicu2 C.N.M.T. , R.T. (C.T.) Esther Mena2 M.D. , Natarsha Fields2 PSC 2, Rathan Subramanian2 M.D., Ph.D. The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, U.S.A. Work flow efficiency is highly impacted by the timeliness of all the cases through the day in a department like PET-CT that require longer physiological preparation before a scan can be done. At Johns Hopkins PET center patient scheduling is handled very carefully to avoid camera down time between subsequent patients throughout the day. Any delay between continuous patients will have a compounding effect on the remaining cases and results in delayed completion of the last case scheduled for the day that might necessitate unplanned residents and staff overtime. The Residents overtime violates the residency duty hours standard set by Accreditation Council for Graduate Medical Education (ACGME). Moreover the Technologists overtime may lower staff satisfaction and incurs additional avoidable expense to the department. Objectives Introduction The objective of this study is to apply lean sigma quality improvement principles in an effort to improve last-case efficiency in our PET-CT department leading to reduction in unplanned over time, compliance with residency duty hours, and increase staff and patient satisfaction. Conclusion Systematic study of workflow efficiency and application practical interventions using quality improvement principles like lean sigma can significantly enhance efficiency of imaging departments. JHU PET-CT Percentage distribution of Last Patient from Sep, 2014 - April, 2015 A lean sigma quality improvement principle that constitutes five stages namely define, measure, analyze, improve and control was used. A multi-disciplinary team including Patient Service Coordinators, Technologists, and physicians formed a team to assess the problem and propose solutions to improve last case efficiency in the department. A data collection form was created to record the completion time for the last case of the day. At the end of each month these data will be compared with the computer generated time stamps from the radiology information system. Then the data will be analyzed and shared with the staff and management team responsible to determine and implement the appropriate intervention required to improve the last case efficiency. This process continued for six month starting from September, 2014 until the target goal was achieved in April, 2015. The percentage of last case completion on or before 5:00 pm showed a 44 % increase from a baseline of 47% (7) in September, 2014 to 91% (20) in April, 2015. Similarly, cases completed between 5:01 and 6:00 pm significantly declined from 46% (7) in September, 2014 to 9% (2) in April, 2015. Whereas the 7% completion rate for the after 6:00 pm was completely eliminated to zero. The average last case completion time from September 2014 through April, 2015 was 4:22 pm with a standard deviation of 9 minutes and 95% confidence interval between (4:04 - 4:40). The latest completion time was 6:53 and earliest completion time was 12:30. Technologists and Residents overtime hours decreased from average of 2 hrs. per day from September, 2014 to zero in April, 2015. On the contrary, patient volume increased by 20 % from September, 2014 to April 2015. 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% September October November December January February March April 47% 60% 76% 65% 85% 80% 73% 91% Before 5:00 5:00-5:30 5:31-6:00 After 6:00 91% of last cases completed before 5:00 pm by April, 2015. Patient volume increased by from September, 2014. No Staff overtime reported for the last three months. I n c r e a s e I n c r e a s e 44 % Project Charter: System Improvement to Increase Last-Case Efficiency in a busy PET-CT Center Champion: Rathan Subramanian M.D., Ph.D. Quality Advisor: Jeff Leal Problem Statement: Work flow efficiency is highly impacted by the timeliness of the first-case of the day in a department like PET-CT that require longer physiological preparation before a scan can be done. Patient scheduling in PET-CT is carefully designed to avoid camera down time, as soon as a patient scan is completed the next one will follow with in a minute. Any delay in a patient scan will have a cascade effect on the subsequent scans leading to poor last case completion rate and unplanned overtime.​ Project Goal: To improve last-case efficiency in PET-CT department from base line of 47 % in September 2014 to 90 % in February 2015. Project Y / Path-Y: Percentage of last cases completed before 5:00 pm. Scope: First and last case of the day in PET-CT division from September 2014 to April 2015. Team Members: Bineyam Gebrewold: Project leader Corina Voicu : member (Sr. Technologist) Esther Mena : member (Physician) Natarsha Fields : member (PSC) Benefits: Minimize unplanned over time. Compliance with residency duty hours set by ACGME. Increase staff satisfaction. Increase patient satisfaction. Results • Start the first case 30 minutes earlier (6:30 am) • Change in patient scheduling. - No in-patients in late afternoon - Reduce successive inpatients - No cardiac viability after 12:00 pm. 47% 33% 13% 7% JHU PET/CT Percentage distribution of Last Patient Of the Day for September, 2014 91% 9% 0% 0% JHU PET/CT Percentage distribution of Last Patient Of the Day for April 2015 • Change in residents work distribution. • Change in Staff schedule. (Add early techs) • Eliminated unnecessary delayed scans. • Staff education and empowerment. Base Line Post Intervention Interventions Results Materials and Methods