CLINICAL DOSIMETER (RD4-B)
The Clinical Dosimeter
type RD-4B is a compact, battery operated instrument designed to measure
exposure rates due to gamma radiation up to 250 R/h. This instrument is
used for measurement of exposure rates in the bladder and rectum of
patients undergoing treatment with Caesium or Cobalt implants for
carcinoma of uterine cervix. This unit can also be used for exposure rate
measurement in other body cavities.
SALIENT FEATURES
LCD DPM indicates
exposure rate in R/hr.SPECIFICATIONS
|
|
Detector |
: |
Ionization chamber of volume 0.2 cc (approx), connected to the end of a 2½ metre long triaxial cable. |
|
|
Range | : | 0-250 R/hr (linear) |
|
|
Display | : | 3½ digit LCD-DPM (over-range indication provided beyond 250 R/h). |
|
|
Accuracy | : | ± 10% of full scale for Co-60 gamma rays. |
|
|
Response Time | : | 15 Sec.(appro). |
|
|
Battery | 3 x 1.5 V cells (Eveready type 1050 or equivalent) | |
|
|
Accessory supplied | : | Sterilization,
graduated, metallic stiffening tube for
inserting into body cavity. |
|
|
Dimensions a) Instrument b) Stiffening tube |
: : |
25 cm x 13.5 cm x 12.5 cm 45 cm (length) x 8 mm (dia) |
|
|
Weight | : | 2 Kg (appro.) including batteries. |
APPLICATION
It is used in hospitals treating patients with
Caesium or Cobalt implants.
