Radiation Therapy
VeriDose
®
PDMQC System
Model 37-705
Two systems in one
•
VeriDose PDMQC is a five-channel
patient dose monitor and a linear
accelerator quality control device
•
Measures beam constancy,
flatness, and symmetry
•
Optional diodes available in a
variety of photon energy ranges,
polarity, and electrons
Pictured Model 37-705-7777 with optional diodes
Introduction
Our innovation and leading-edge technology combines the powerful performance
capabilities of patient dose monitoring and linear accelerator quality control into one
compact, easy-to-use product.
We give you this powerful combination of technology and versatility for a lower price
than you would expect to pay for one unit alone.
Features
Accuracy
Measurements and updates are provided
in real time, accurate to within 1% or
better
Automatically adjusts the proper offset
voltage for each detector, resulting in up
to ten times less drift than other products
Time-savings
VeriDose PDMQC stores up to 25
separate calibration sets. (A calibration set
can be created for up to five diodes at a
time.) As a result, the frequency of
calibrations you do is significantly
reduced. Setup time and error potential
are also dramatically reduced, leaving
more time for patient treatment
Documentation
When interfaced with a standard printer,
you can print:
- Patient treatment dose reports
- Date and time of the procedure
- Diode detector group and serial number
In vivo measurements with the VeriDose
PDMQC as a patient dose monitor are
reimbursable under CPT-4 Section 77331
Special Dosimetry
Applications
Use VeriDose PDMQC as a patient dose monitor and when needed, just simply plug in
the VeriDose QC Module and VeriDose PDMQC is transformed into a precision linear
accelerator quality control device.
Two radiation oncology products in one:
• It’s a linear accelerator quality control device (it measures beam constancy, which
includes flatness and symmetry).
It’s a five-channel patient dose monitoring system that records patient dose
verification data from actual radiation measurements made on the patient during
treatment.
Specifications
Electrometer
Input circuitry
Five electrometer channels with digital zeroing and
gain control; bi-polar
Rate range
1.0 to 1000 cGy/min
Dose range
0.1 to 1000 cGy
Sensitivity adjustment
0.1 to 10 nC/cGy
Display
240 x 64 dot LCD
8 lines x 40 characters, with CCF backlight
Clock
Real time clock, battery operated, US or European format
Alarm
User-selectable level for each channel
User controls
On-Off switch, 5-column select soft-keys for control
functions, scroll-up, scroll-down, and enter key for data entry
User setup parameters
Stored in nonvolatile, battery-backup RAM
Computer interface
RS-232, 19.2 BAUD, 8, N, 1
Data format: standard decimal points or Euro-commas
Printer interface
Parallel, selectable drivers for LaserJet in ASCII
format only
Environmental
Storage temperature
32º to 158ºF (0º to 70°C)
Operating temperature
50º to 86ºF (10º to 30°C)
Relative humidity
5% to 95%, non-condensing
Power requirements
120 VAC, 60 Hz or 230 VAC, 50 Hz to 12 VDC @ 1A
AC adapter, UL, CSA, CE
Dimensions
9 (w) x 8.5 (d) x 2.5 in (h) (22.9 x 21.6 x 6.4 cm)
(EMI shielded)
Weight
2.5 lb (1.2 kg)
Phantom
Detector
Five diode detectors
Energy range
Photon
4 to 25 MV
Electron
5 to 25 MeV
Sensitive volume
0.25 mm
3
Sensitivity
1.5 nC/cGy
Diode polarity
Negative
Rad damage at 10 kGy
< 15%
Detector configuration
Flatness/Symmetry
One central axis
Four orthogonally-positioned at 8 cm off central axis in the
transverse and radial dimensions
Off-axis detectors are positioned at 80% of field size for flatness
and symmetry measurements
Energy constancy
Detector Depth Positions: 4.5, 12.5, and 20.5 cm
Interface cable
50 ft (15 m)
Buildup
1.9 cm acrylic (2.3 g/cm
2
)
Dimensions
9.85 (w) x 9.85 (d) x 1.5 in (h) (25 x 25 x 3.8 cm)
Weight
5.25 lb (11.6 kg)
Optional accessories
VeriDose Excel Add-In Software,
3.5 inch disk
(Model 37-705-2100)
Diode Holder,
with five slots
(Model 30-492-1000)
Calibration Jig,
with six slots
(Model 30-492-5200)
VeriDose Solid-State Diode Detectors
(Model 30-471).
(See next
page for diode specifications)
Available model(s)
37-705
VeriDose V Electrometer
37-705-7777
VeriDose PDMQC System, consists of electrometer,
Excel add-in software, and VeriDose PDMQC Phantom
Tested.
Meets applicable standards.
