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UNIT 2A
BRAKE
| Question | Answer |
|---|---|
| PRIME FACTORS THAT TECHNOLOGIST HAS CONTROL OVER | MA, S, MAS, KVP, SID, OID |
| PRIME FACTORS THAT TECHNOLOGIST HAS CONTROL OVER AT CONTROL PNEAL | MAS MA S KVP |
| WHAT IS PHOTOGRAPHIC PROPERTY | VISIBILITY |
| WHAT ARE PHOTOGRAPHIC PROPERTIES | DENSITY CONTRAST NOISE |
| WHAT IS DENSITY (OPTICAL) | DEGREE OF BLACKNESS OR DARKNESS DO TO AMOUNT OF BLACK METALLICA SLIVER ON THE FILM |
| VISIBILITY FACTOR IS | DENSITY |
| WHAT HAPPENS IF WE GET MORE EXPOSURE ON FILM IR | MORE DENSITY |
| CONTROLLING FACTORS FOR FILM DENSITY | MA X S |
| INFLUENCING FACTORS FOR FILM DENSITY | KVP AND SID |
| CONTROLLING FACTOR FOR DIGITAL DENSITY(BRIGHTNESS) | COMPUTER PROCESSING |
| COMPUTER PROCESSING OF IMAGE ADJUST OVER ALL BRIGHTNESS/DENSITY | AUTOMATIC RESEALING |
| WITH CR/DR OVER ALL BRIGHTNESS/DARKNESS IS ADJUSTED | WINDOW LEVELING |
| IN ADDITION TO AUTOMATIC RESCALING AND WINDOW LEVELING OVER ALL BRIGHTNESS CAN BE ADJUSTED | POST PROCESSING |
| HOW CAN RAD TECH DETERMINE IF PT OR IR HAVE BEEN PROPYL EXPOSED | NUMBER, EXPOSURE NUMBER, SENSITIVITY NUMBER |
| EXPOSURE INDEX WHEN SHOWS LOW NUMBERS IT MEANS | PT IR ARE UNDEREXPOSED |
| EXPOSURE INDEX WHEN SHOWING HIGH NUMBER IT MEANS | PT IR ARE OVER EXPOSED |
| LOW SENSITIVITY NUMBER INDICATES | OVER EXPOSE |
| HIGH SENSITIVITY NUMBER INDICATES | UNDER EXPOSE |
| WHAT ARE RELATED TERMS FOR CONTRAST | GRAY SCALE CONTRAST SCALE |
| WHAT IS CONTRAST | RATIO OF DIFFERENCE BETWEEN TWO DENSITIES |
| FACTOR VISIBILITY IS | CONTRAST |
| HIGH CONTRAST IS SAD TO BE | BLACK AND WHITE |
| LOW CONTRAST IS SAD TO BE | SHADES OF GARY |
| WHAT IS SCALE OF CONTRAST AKA GRAY SCALE FOR DIGITAL | RANG OR NUMBERS OF DIFF DENSITIES |
| SHORT SCALE IS SAD TO HAVE | BLACK AND WHITE HIGH CONTRAST |
| LONG SCALE IS SAD TO HAVE | MANY SHADS OF GRAY LOW CONTRAST |
| THE CORRECT SCALE OF CONTRAST MAKES WHAT | DETAILS VISIBLE |
| CONTRAST IS | VISIBILITY FACTOR THAT MAKES DETAILS VISIBLE |
| MUST HAVE SUBJECT CONTRAST TO HAVE | RADIOGRAPHIC CONTRAST |
| CONTROLLING PRIME TECHNICAL FACTOR THAT AFFECTS CONTRAST | KVP |
| WITH DIGITAL SYSTEM CR/DR WHAT DOES THE ADJUST CONTRAST AKA GRAY SCALE | LUT LOOK UP TABEL |
| IMAGE CONTRAST AKA GRAY SCALE CAN BE ADJUSTED BY | POST PROCESSING OF THE WINDOW WITH |
| ADJUSTING WINDOW LEVEL AND WINDOW WIDTH IS KNOWN AS | WINDOWING |
| WIDE WINDOW WIDTH IS | LONG GRAY SCALE |
| NARROW WINDOW WIDTH IS | SHORT GARY SCALE |
| WHAT IS NOISE | UNWANTED USELESS INFO ON THE IMAGE |
| EXAMPLE OF NOISE ARE | LIGHT FOG, SCATTER FOG, ARTIFACTS, MOTTLE |
| WHAT DOES FOG DO | ADDS DENSITY TO FILM AND REDUCES CONTRAST |
| WHAT DOES MOTTLE PRODUCE | SPLOTCHY, GRAINY APPEARANCE |
| HOW DOES MOTTLE HAPPEN | DUO TO UNDEREXPOSURE OF IR |
| HOW IS RADIO-GRAPHIC CONTRAST DETERMINED | SUBJECT CONTRAST, DIFFERENTIAL ABSORPTION, IMAGE RECEPTOR CONTRAST |
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