RADT. 425 FINAL Word Scramble
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| Question | Answer |
| Brightness can be adjusted through postprocessing _________ | windowing |
| Intensity refers to the total _____ of xray photons | QUANTITY |
| ______ is the controlling factor for intensity | mAs |
| Contrast is | the ratio or % difference between two adjacent brightness levels |
| Subject contrast demonstrates | the degree of differential absorption from different body structures (atomic number, atomic density, part thickness) |
| ____ is the controlling factor for contrast | kVp |
| Histogram peaks and valleys represent | the subject contrast in the remnant radiation |
| Quantum mottle | amount of exposure (photons) reaching the IR is TOO LOW **re-exposure is necessary** |
| On CXR, if angled too cephalically | clavicles are projected UP (<1" above apices) lordotic view |
| On CXR, if angled too caudally | clavicles are projected DOWN (>1" above apices) |
| This view is good to see a boxer's fx of the 5th MC | PA Oblique Hand |
| On a lateral hand | 2nd - 5th MC heads superimposed; do NOT care about radius & ulna superimposition |
| Name the bones of the wrist | (L to R bottom row, then L to R top row) Scaphoid, lunate, triquetrum, pisiform Trapezium, trapezoid, capitate, hamate |
| AP Elbow | 1/8th of radius and ulna are superimposed |
| AP Internal Oblique Elbow | MORE superimposition of radius and ulna |
| AP External Oblique Elbow | "EXES" radius and ulna are separated |
| AP Humerus epicondyles | PARALLEL to IR |
| Lateral Humerus epicondyles | PERPINDICULAR to IR |
| Thin (asthenic) pts get ____ angle on AP Axial Clavicle | 25-30 degrees |
| Large (hypersthenic) pts get ____ angle on the AP Axial Clavicle | 15-20 degrees |
| Lateral rotation of oblique foot ______ superimposition of metatarsal bases | increases |
| Medial rotation of oblique foot _____ superimposition of metatarsal bases | decreases |
| AP Ankle | Medial mortise is open & tibia covers 1/2 of distal fibula |
| AP Knee | Tibia covers 1/2 of proximal fibula |
| If your AP Knee shows the fibula popped out laterally then there was | too much internal rotation |
| If your AP Knee shows MORE superimposition of the fibula and tibia then there was | too much external rotation |
| AP Axial SI Joints angle | 30 degrees cephalic for MALES and 35 degrees cephalic for FEMALES |
| AP Oblique SI Joints position | roll 25-30 degrees posterior oblique center 1" medial to upside ASIS |
| More lordotic curvature of C-spine = | MORE cephalic angle needed (like 20 degrees) |
| Lumbar AP Oblique Average ___ rotation | 45 degrees |
| Lumbar AP Oblique L1L2 ____ rotation | 50 degrees |
| Lumbar AP Oblique L5 ____ rotation | 30 degrees |
| In a good lumbar oblique, the pedicle should be | midway between the midline and lateral border of the vertebral body |
| Insufficient oblique lumbar, the pedicle is | closer to the LATERAL of the vertebral body |
| Excessive oblique lumbar, the pedicle is | closer to the MIDLINE border of the vertebral body |
| PA Oblique Sternum position is | 15-20 degree RAO w/ orthostatic breathing |
| True Ribs: False Ribs: Floating Ribs: | 1-7 8-12 11 & 12 |
| Anterior rib pain | PA position (PAA) - LAO/RAO |
| Posterior rib pain | AP position (APP) LPO/RPO |
| AP Lower Leg (tib/fib) | Tibia covers 1/4 fibular head & 1/2 distal fibula |
| Lateral Lower Leg | Tibia covers 1/2 fibular head |
| Lateral Sacrum/Coccyx CR to | 3-4 in posterior to ASIS |
| Lateral Coccyx CR to | 3-4 in posterior to ASIS and 2 in distal |
| For the Towne Method the dorsum sellae is | centered WITHIN the foramen magnum |
| WATERS: | MML perpendicular to IR; OML forms 37 degree angle with IR; PR BELOW Maxillary sinus |
| MODIFIED WATERS: | LML perpendicular to IR; OML forms a 55 degree angle with IR; PR in lower 1/3 of maxillary sinus |
| SMV | IOML is parallel to IR & CR 1.5" inferior to mandibular symphysis |
Created by:
SavHoffman25
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