Light Collection Enhancement Analysis for Digital X-Ray Detector Using Gd2O2S:Tb and CsI:Tl Phosphors in Nanoscale Treatment - Atomic Nanoscale Technology in the Nuclear Industry - page 73

TABLE 6.3 ( Continued )
Light.Collection.Eficiency.(%)

IsotropicSource(%)

L1 L2

Energy
(kVp)

Thickness
(µm;mg/cm 2 ) P9 P1-P8 P6-P9 P1-P5

(a)Gd 2 O 2 S:Tb
. 25
. 26
. 27

48;.35
46;.34
46;.34
82;.60

11.05
4.935
5.839
26.00

1.105
0.493
0.584
0.260

0.012
0.189
0.158
0.190

0.005
0.080
0.066
0.080

. 28
. 30
. 90

40;.29
44;.32
68;.50
68;.50

6.300
11.46
6.317
6.181

0.630
1.146
0.632
0.618

0.138
0.001
0.137
0.143

0.058
0.000
0.058
0.060

109;.80 4.572 0.457 0.199 0.083

(b)CsI:Tl
. 20 a
. 35 a
. 50 a
. 30

150;.68
150;.68
150;.68
150;.68

26.00
23.10
25.17
20.19

0.260
2.310
2.517
2.019

0.190
0.189
0.234
0.678

0.030
0.160
0.099
0.285

200 147;.47

. 299;.135

20.26
17.16

2.026
1.716

0.669
1.096

0.282
0.461

a. 20,.35,.and.50.are.keV.units.

6.4 Conclusions
Light.collection.eficiency.may.be.increased.by.the.microlens.optical.focus-
ing. method.. This. lens. could. focus. the. lights. of. the. nanoscale. photon. dis-
tributions. based. on. the. angular. distribution. of. the. photons.. Basically,. the.
quantum.quantity.is.obtained.by.the.x-ray.energy.and.screen.thickness..So,.
the.image.blur.can.be.decreased.by.the.photon.detection.numbers.in.the.pho-
todetector..The.optimized.light.collection.eficiency.could.vary.based.on.the.
geometry.of.the.breast.and.several.physical.values..Energy.is.an.important.
factor.. Dose. calibration. must. consider. the. safety. of. the. patient's. exposure.
due.to.the.hazard.of.the.radiation..The.mammogram.examination.could.be.
modiied. by. the. lower. radiation. treatment.. The. screen. is. manufactured. at.
microscale. thickness,. which. is. incorporated. in. the. nanoscale. simulations..
The. molecular. structure. of. the. phosphor. material. is. modiied. for. better.
imaging,.which.should.be.investigated.by.nanoscale.analysis..The.microlens.
could.be.used.in.other.diagnostic.x-ray.imagers.for.lung.or.stomach.cancers..
Optical.imaging.manipulation.should.be.widely.investigated.in.x-ray.imager.
systems..The.cost.of.the.production.of.a.completed.system.with.AMFPI.could.
be.reduced.due.to.advances.in.micro-.and.nanoscale.manufacturing.