Analisis Kualitas Citra Radiografi dengan Menggunakan Variasi Rasio Grid dan Konstruksi Grid

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LAMPIRAN HASIL CITRA STEPWEDGE DENGAN VARIASI RASIO DAN
KONSTRUKSI GRID

1. Hasil Citra radiografi stepwedge menggunakan konstruksi grid fokus dengan rasio grid 6:1
tegangan tabung 70kV sampai 90kV dengan step kenaikan 5kV
70kV

75kV

80kV

85kV

90kV

2. Hasil Citra radiografi stepwedge menggunakan konstruksi grid linier dengan rasio grid 8:1
tegangan tabung 70kV sampai 90kV dengan step kenaikan 5kV
70kV

75kV

80kV

85kV

90kV

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3. Hasil Citra radiografi stepwedge menggunakan konstruksi grid linier dengan rasio grid 10:1
tegangan tabung 70kV sampai 90kV dengan step kenaikan 5kV
70kV

75kV

80kV

85kV

90kV

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1) X-ray Grid Selection Based on Clean-up Requirements:
Cleanup
Ratio/Type
Positioning
Recommended
Latitude
Up To
SUPERLATIVE 8:1 criss-cross
Distance fair;
120 KVP
centering and
leveling-slight

Remarks

Not recommended for tilted
tube technique

EXCELLENT

12:1 linear

Very slight

110 KVP (Suitable
for highr KV)

Extra care required for
proper alignment; usually
used in fixed mount

EXCELLENT

6:1 criss-cross

Good

100 KVP

GOOD

8:1 linear

100 KVP

GOOD (CR)

4:1,6:1

Distance fair;
centering and
leveling-slight
Good

Tube tilt limited to five

degrees
For general stationary grid
use

120 KVP

CR grid

MODERATE

6:1 linear

Good

80 KVP

Least expensive of stationary
grids

2)Basic Guidelines:

ANATOMY
SKULL
CHEST
CR CHEST
ABDOMINAL
CR ABDOMINAL
SCOLIOSIS STUDIES
SPECIAL PROCEDURES
MOST STUDIES
BI-PLANE
SURGICAL ROOM
ORTHOPEDICS
CHOLANGIOGRAMS VENOUS STUDIES
EMERGENCY ROOM
TRANS LATERAL SKULL, SPINES, HIPS

LINE
103
103-150
150,178

103
150,178
85-103

RATIO
10:1
10:1-12:1
4:1,6:1
8:1
4:1,6:1
8:1

DISTANCE
36-40"
60-72"
Parallel
34-44"
Parallel
48-72"

103
103
criss-cross

10:1
10:1

36-40"
36-40"

85
103

8:1
8:1,10:1

34-44"
34-44,36-40"

103-85

6:1-8:1

34-44"