ContCont.

5) Static marks5) Static marks

ContCont.

6) Screen mark Artifacts

ContCont.

7) CR imaging plate artifacts

Li ht tScratches

Light spot

ContCont.

8) B k if8) Backscatter artifact

ContCont.

9) Reversed cassette9) Reversed cassette

ContCont.

10) CR l t di l ti10) CR plate discoloration

Cont Cont.

11) Monitor artifacts

P st p ssinPost-processing

a) Chemical (manual / automatic processor/ daylight)p y g1- Over or Underdevelopment 2- Chemical staining 3- Water spots 4- Clumping of silver

halide granuleshalide granules

ContCont.

5 G id h k 5- Guide shoe marks

Minus - Density

Plus- Density

Cont.6- finger print or pressure marks most common (Kink “nail” marks

or crescent-shaped “crimp” mark)

finger marks finger marks after exposureprior exposure. after exposure.

C ntCont.

7- fog (loss of radiographic contrast)g g p

Cont. b) Digital Radiography (Computed Radiography/ Direct Radiography)1) Vertical or horizontal patterns of hyper-intense signal.

ContCont.

2) Pl t d l t i tif t 3) Ph t “ h t” i 2) Plate reader electronics artifact 3) Phantom “ghost” image

ContCont.

4) Exposure data recognizer (EDR) failure

ContCont.6) Excessive edge enhancement artifact

5) Inappropriate image processing selection enhancement artifactprocessing selection

Cont

7) Laser printer artifacts

Cont.