Body scans and Bottleneck case
IV injection
2 mins
Patient located
2 mins
Patient moving
2 mins
- Nurse
- Nurse
CT scan
17 mins
- Nurse
Protocol and machine sets up
3 mins
- Technician
- Technician
CT image reconstruction
10 mins
- Technician
Off table
1 min
Return patient
2 mins
Code and distribute images
2 mins
- Technician
Changing linens and clean room
2 mins
Refill contrast
3 mins
Got next patient
2 mins
Total is 10 mins
- Nurse
Figure 1. Current process flow diagram of old scanner.
a. How long does it take for a patient to go through the process?
36 mins
b. What is the labor content for the nurse and technologist?
For nurse is 16 mins, as for technician is 32 mins
c. What resource is the bottleneck?
CT scan
d. What is the capacity of the process?
One patient for 36 mins, 1.67 patient per hour.
e. What is net margin per hour?
$666.5/ hour ((1.67*500)-(35+50+50*1.67)=666.5)
1
IV injection
2 mins
Patient located
2 mins
Patient moving
2 mins
- Nurse
- Nurse
CT scan
2.5 mins
- Nurse
Protocol and machine sets up
1 min
- Technician
- Technician
CT image reconstruction
2 mins
- Technician
Off table
1 min
Return patient
2 mins
Code and distribute images
1 min
- Technician
Changing linens and clean room
2 mins
Refill contrast
3 mins
Got next patient
2 mins
Total is 10 mins
- Nurse
Figure 2. Current process flow diagram of new scanner.
a. How long does it take for a patient to go through the process?
19.5 mins
b. What is the labor content for the nurse and technologist?
For nurse is 16 mins, as for technician is 6.5 mins
c. What resource is the bottleneck?
Nurse’s ten minutes process after the CT scan
d. What is the capacity of the process?
One patient for 19.5 mins, 3.08 patient per hour.
e. What is net margin per hour?
$1,301/ hour ((3.08*500)-(35+50+50*3.08)=1,301)
2
3. What changes might you make in the configuration of CT scan rooms and waiting
2 mins
Patient located
2 mins
Patient moving
2 mins
- Nurse
- Nurse
CT scan
17 mins
- Nurse
Protocol and machine sets up
3 mins
- Technician
- Technician
CT image reconstruction
10 mins
- Technician
Off table
1 min
Return patient
2 mins
Code and distribute images
2 mins
- Technician
Changing linens and clean room
2 mins
Refill contrast
3 mins
Got next patient
2 mins
Total is 10 mins
- Nurse
Figure 1. Current process flow diagram of old scanner.
a. How long does it take for a patient to go through the process?
36 mins
b. What is the labor content for the nurse and technologist?
For nurse is 16 mins, as for technician is 32 mins
c. What resource is the bottleneck?
CT scan
d. What is the capacity of the process?
One patient for 36 mins, 1.67 patient per hour.
e. What is net margin per hour?
$666.5/ hour ((1.67*500)-(35+50+50*1.67)=666.5)
1
IV injection
2 mins
Patient located
2 mins
Patient moving
2 mins
- Nurse
- Nurse
CT scan
2.5 mins
- Nurse
Protocol and machine sets up
1 min
- Technician
- Technician
CT image reconstruction
2 mins
- Technician
Off table
1 min
Return patient
2 mins
Code and distribute images
1 min
- Technician
Changing linens and clean room
2 mins
Refill contrast
3 mins
Got next patient
2 mins
Total is 10 mins
- Nurse
Figure 2. Current process flow diagram of new scanner.
a. How long does it take for a patient to go through the process?
19.5 mins
b. What is the labor content for the nurse and technologist?
For nurse is 16 mins, as for technician is 6.5 mins
c. What resource is the bottleneck?
Nurse’s ten minutes process after the CT scan
d. What is the capacity of the process?
One patient for 19.5 mins, 3.08 patient per hour.
e. What is net margin per hour?
$1,301/ hour ((3.08*500)-(35+50+50*3.08)=1,301)
2
3. What changes might you make in the configuration of CT scan rooms and waiting