FOCUS Flashcards
EXPLAIN SINGLE STRAND BREAK
OCCURS IN DNA
AKA POINT MUTATION
REPAIRS
EXPLAIN DOUBLE STRAND BREAK FRAMESHIRT
OCCURS IN DNA
BREAKS IN PHOSPH. CHAIN AT DIFF LEVELS
CAN REPAIR BUT HARDER
EXPLAIN DOUBLE STRAND BREAK
OCCURS IN DNA
BREAKS IN PHOSPH. ON SAME LEVELS
WORST DNA. - REPLICATES DAMAGED INFO
MUTATION OCCURS WHEN?
CROSS LINKING
EXPLAIN RESTITUTION
CHROMOSOME
BREAK & REJOIN
NO DAMAGE
EXPLAIN DELETION
CHROMOSOME
ACENTRIC FRAGMENT RESULTS
EXPLAIN BROKEN END ARRANGEMENT
CHROMOSOME
1 CHROMOSOME = RINGS / REPO DEATH
2 CHROMOSOME = DEATH OR REPLICATED MUTATIONS TRANSLOCATION
WORST CHROM
INSTANT DEATH
1000 Gy in SECONDS
REPRODUCTIVE DEATH
1 - 10 Gy
Cant reproduce / pass on da,age
MITOTIC DEATH
AKA: GENETIC DEATH
MITOTIC DELAY
.01 Gy
CELL DONT DIVIDE ON TIME
HEMATOLOGIC DEPRESSION / BLOOD CHANGES
.25 Gy
LD 50/30
LD 50/60
LD 100
LETHAL DOSE
50/30 = 300-400 rad / 3 - 4 Gy
50/60 = 350 rad / 3.5 Gy
100 = 600 rad / 6 - 10 Gy
GESTATIONAL TOTAL DOSE EQUIVALENT FOR EMBRYO/FETUS OF OCCUPATIONAL WORKER?
5 mSv
.5 rem
GESTATIONAL = TOTAL
MONTHLY DOSE EQUIVALENT FOR EMBRYO/FETUS OF OCCUPATIONAL WORKER?
.5 mSv
.05 rem
TEMPORARY STERILITY
PERMANENT STERILITY
TEMP = 2 Gy (200 rad)
PERM = 5 - 6 Gy (500 - 600 rad)
CUMULATIVE WHOLE BODY EFFECTIVE DOSE
AGE X 10 mSv
AGE X 1 rem
ANNUAL SKIN OF EXTREMITIES & ORGANS OF OCCUPATIONAL WORKER
500 mSv
50 rem
EFFECTIVE DOSE LIMITS ARE BASED ON WHICH RESPONSE CURVE?
LINEAR NONTHRESHOLD
SOMATIC OCCURS
LATE / YEARS AFTER
WHOLE BODY EFFECTIVE DOSE FOR RADIATION WORKER
.05 Sv
50 mSv
5 rem
ANNUAL DOSE EQUIVALENT FOR INFREQUENTLY EXPOSED POPULATION
5 mSv
.5 rem
RADIATION MONITOR READINGS ARE IN
mrem
mSv
ANNUAL DOSE EQUIVALENT FOR FREQUENTLY EXPOSED POPULATION
1 mSv
.1 rem
LENS OF EYE WORKER:
LENS EYE GENERAL PUB:
150 mSv. 15 rem
15 mSv. 1.5 rem
STUDENT UNDER 18
1 msv
.1 rem
ORGOGENISIS OCCURS
2 - 6 WEEK GESTATION
AVERAGE BACKGROUND RADIATION
1 mSv
.1 rem
100 mrem
BONE MARROW SYNDROME DOSE
WHOLE BODY DOSE 1 - 10 Gy
CEREBROVASCULAR DOSE
50 Gy
DEATH IN DAYS
ARS DOSE
1 Gy + TO WHOLE BODY
GASTROINTESTINAL SYNDROME DOSE
6 Gy
WEEKS
SINGLE ABSORBED DOSE CAUSE RADIATION INDUCED SKIN ERYTHEMA:
2 Gy
200 - 500 rad
NAUSSEA & DIARRHEA DOSE EQUIVALENT
1.5 Sv
150 rem
SUPRESSED MENSTRATION & REDUCTION SPERM
10 rad
1 mSv
FIRST TRIMESTER DEATH DOSE:
SECOND & THIRD DEATH DOSE:
,05 - .15 Gy / 5 - 15 rad
200 mSv
SUBLETHAL DOSE
SUPERLETHAL DOSE
SUB 200 - 300 rad (2 - 3 Gy)
SUPER = 600 - 1000 rad (6 - 10 Gy)
LEFT HAND RULE
MOTORS
THUMB = DIRECTION OF FORCE
INDEX = DIRECTION MAGNET FIELD
MIDDLE = DIRECTION CURRENT
RIGHT HAND RULE
GENERATORS
THUMB = DIRECTION OF MOTION
FINGER = DIRECTION MAGNETIC FIELD
MIDDLE/PALM = DIRECTION OF INDUCED CURRENT
GRID CONVERSION:
NONE:
5:1
6:1
8:1
12:1
16:1
NONE: 1
5:1 = 2
6:1 = 3
8:1 = 4
12:1 = 5
16:1 = 6
GRID CONVERSION FORMULA
MAS 1 = GCF 1
——— ————-
MAS 2 = GCF 2
PRIMARY CIRCUIT CONSIST OF:
Primary: (Low Voltage)
Autotransformer
Kv Selector
Line Voltage Compensator
Timer
Primary side of the Step-up
Transformer
SECONDARY CIRCUIT CONSIST OF
Secondary: (High Voltage)
Secondary side of the Step-up
transformer
(Kilovolts)
Rectification system
X-ray tube
FILAMENT CIRCUIT CONSIST OF:
Filament:
Step-down transformer
(8-12 Volts)
(3 – 6 Amps)
rheostat
SINGLE PHASE = ______ PULSE/SECOND
3 PHASE 6 PULSE = ______ PULSE/SECOND
3 PHASE 12 PULSE = ______ PULSE/SECOND
SINGLE 120 PULSES / SECOND
3/6 = 360
3/12 = 720
ELECTRONIC TIMERS
OLD =
NEW =
OLD = RHEOSTAT, CAPACITOR & GAS DISCHARGE TUBE
NEW = RHEOSTAT, S-SWITCH, CAPACITOR & THYRATRON TUBE
- SHEILD GONADS WHEN WITHIN:
- WHERE ARE GONADS SHIELDED
5 cm
1 in MEDIAL ASIS
- CHICKEN POX IS ____ PRECAUTION
- IF CR PLATE NOT USED, WHEN IS IT ERASED?
- CLAY SHOVELERS IS FRACTURE OF
AIRBORNE
48 HOURS
C6 (C-SPINE)
FILE SIZE FORMULA:
CONTRAST FOR PERFORATED BOWEL
TOMO SLICE THICKNESS DETERMINED BY:
PIXELS X BIT DEPTH / 8
GASTROGRAFIN OR ISOVUE (MORE EXP.)
EXPOSURE ANGLE
NEUROGENIC SHOCK =
AXIAL VIEWS NEED HIGHER OR LOWER TECHNIQUE?
POOLING BLOOD / HEAD TRAUMA
THICKER PART / HIGHER TECHNIQUE
ADD OR DESTRUCT
PNUEMONIA
PLUERAL EFFUSION
EMPHYSEMA
ACITIES
MYLOMA
GOUT
PNUEMONIA = ADD
PLUERAL EFFUSION = ADD
EMPHYSEMA = DESTR.
ACITIES = ADD
MYLOMA = DESTR.
GOUT = DESTR.
ROTATION FOR IMAGES WITH CLAVICLES
AP = UPSIDE SUPERIMP SPINE
DOWNSIDE = SPACE BTWN / AWAY SPINE
PA = DOWNSIDE SUPERIMP SPINE
UPSIDE = SPACE BTWN / AWAY SPINE
——————————————————-
RAO = RIGHT CLAV SUPERIMP. SPINE
LAO = LEFT CLAV SUPERIMP. SPINE
RPO = LEFT CLAV SUPERIMP SPINE
LPO = RIGHT CLAV SUPERIMP SPINE
