2 (No Transcript) 3 (No Transcript) 4 Darkrooms Still Necessary
Darkrooms are necessary for manually fed processors and daylight processors.
-Loading automatic film processor magazines.
Necessary for conducting certain quality control tests (daily sensitometric strip).
5 Darkroom 6 Darkrooms 4 Basic Functions
Number 1 Function
7 (No Transcript) 8 DARKROOM FUNCTION 2
Purpose of Film Processing
Change silver halide crystals from film emulsion (after exposure to x-ray or light photons) to black metallic silver.
Latent image (invisible until processed) is developed into a Manifest image.
Improper or careless processing can cause poor diagnostic quality.
9 Manual Feed Processor 10 Hand Processing in the Early years
Strong smell of chemicals
11 1956 first roller transport6 minute processing time 12 Processing Time 3 minutes 90 seconds 13 Processing FilmTable top Processors Can process as fast as 60 seconds TABLE TOP PROCESSOR 14 PROCSSING CHEMICALS
Solutions are PRE- MIXED
Outside Company usually provides service-
Weekly or monthly
Solutions should be replenished as necessary changed regularly
Solutions must be monitored (Daily QC strip).
15 Replenishment tanks 16 TABLE TOP FILM DUPLICATORto MAKE COPIES OF FILMS 17 WILL THIS WORK 18 Daylight Processor 19 Function 3 Handling of Film 20 UNLOAD EXPOSED FILM 21 Pass Box 22 (No Transcript) 23 LOAD CASSETTE 24 Function 4 Film Identification
Exam date time
Pt x-ray number
Rt or Lt marker
25 FILM ID PRINTER Name of patient place on top Cassette is flashed with name can be done before or after image is taken Must be done BEFORE PROCESSING FIL M 26 AUTOMATIC PROCESSING
Must be 3-6 feet from counter top or feed tray of processor
Used to be amber or orange filter
51 Darkroom Summary 52 Summary Questions 53 X-ray Cassettes cross sectionreview layers What are the 4 layers Of FILM SCREENS 54 Film cross section 55 (No Transcript) 56 RTA LAB 2 Next Week PROCESSING SCREEN EXPOSURE
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