Detector Calibration
4-4
CardioMD Service Manual
1MAN0158-H11 04-2005 CSIP Level 1
#
*)
Calibration Equipment
Isotopes
(point sources)
Approx.
duration per
detector
(8)
UnifCor (isotope specific
uniformity calibration)
Point source holder
(or flood phantom)
As desired
~ 40 MBq or 1 mCi
(intrinsic)
~ 120 – 200 MBq or
3 – 5 mCi (extrinsic)
15 min.
9
CorCor (center of rotation
calibration)
Point source
LEHR: 40–120 MBq
or 1–3 mCi
LEGP: 40–120 MBq
or 1–3 mCi
15 min.
Table 4.1 Complete CardioMD calibration
*)
Note
. The calibrations are interdependent in a hierarchical order. Any calibration in the se-
quence must be preceded by all calibrations that have lower numbers. For example, before per-
forming ECor, all other calibrations preceding ECor in Table 4.1 must have been done.
Note
. Before you are allowed to perform detector calibrations, you must enter a password. The
procedures described in the following sections identify when this is required. Once the password
has been entered, you will not need to re-enter the password for the remaining calibrations. All
menu options on the acquisition PC will remain enabled until you exit the CardioMD application
software.
Note
. When you have completed the detector calibrations, remember to close down and then re-
start the CardioMD application software. This will disable access to the service calibration menu
options.
Note
. Detector calibrations are saved as correction files on the acquisition PC. When any detector
calibration is performed, the corresponding correction file must
not
have the attribute read-only, as
would be the case if the correction file for some reason has been copied from a CD-ROM. There-
fore, before starting detector calibrations, verify that the calibration files involved do not have the
read-only attribute: Right-click on the file in the Windows Explorer and ensure that the Read-only
box is
not
checked. Names of calibration files are listed for each calibration procedure described
in this chapter.
If the existing correction file has the attribute read-only, a pop-up message is displayed when the
calibration is started. In this case, correct the attribute of the correction file: Right-click on the file
in the Windows Explorer and un-check the Read-only box.
Note
. If the CardioMD system is equipped with the AC Option, the transmission scanners must be
removed and the system configured to run without the AC option before the following calibrations
and tests can be performed:
•
HVCal (high voltage calibration)
•
PMTCal (PMT basic calibration)
•
Ecal (energy calibration)
•
GeoCal (geometry calibration)
•
ECor (energy correction map calibration)
•
LinCor (spatial linearity map calibration)
•
All NEMA tests (see Chapter 10
NEMA Performance Measurement
).
See Chapter 12
CardioMD AC Option
for instructions on removing the transmission scanners.
Summary of Contents for CARDIOMD
Page 1: ...CARDIOMD SERVICE MANUAL 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 10: ...Introduction x CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 16: ...Safe Operating Practices 1 6 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 164: ...Detector Calibration Files 5 60 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 328: ...Installation Procedures 9 38 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 348: ...Planned Maintenance Procedures 11 6 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 465: ......