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Midterm Extern Class
| Question | Answer |
|---|---|
| What is Central Ray Angulation ? | it is how you tilt the X-ray tube before taking the image. |
| When you angle the CR 25 degrees cephalic, it means? | angling the xray beam 25 degrees toward the head |
| What is CAUDAL? | refers to a structure closer to the feet |
| whst is PROXIMAL? | a location closer to the body or point of attachment. |
| what is DISTAL? | further from the point of attachment or the trunk of the body |
| what is HINGE STRUCTURE? | the elbow joint involved the humerus and ulna for hinge like motion |
| list (2) classifications of human skeleton | Axial Skeleton: Skull , Vertebral column, rib cage Appendicular Skelton : comprises the limbs and girdles |
| what is anatomical position? | Upright with arms, abducted palms forward, head facing forward |
| What is Recumbent? | lying down in any position |
| what is prone? | lying on the anterior surface |
| what is supine? | lying on the posterior surface |
| what is Trendelenburg? | Head lower than the feet |
| what plane divides body into right and left Portions? | Sagital Plane |
| what is Midsagittal Plane ? | equal right and left halves |
| what is coronal / frontal plane ? | divides anterior and posterior portions |
| what is Transverse plane? | divides superior and inferior portions |
| what is superior? | above |
| what is inferior? | below |
| what is an anterior? | Front |
| what is posterior? | back |
| what is towards the midline? | medial |
| what is away from the midline? | Lateral |
| what is proximal? | closer to the point of attachment |
| what is distal? | further from point of attachment |
| what is superficial? | towards the surface |
| what is deep? | away from the surface |
| what is flexion? | decreases angle of joint |
| what is extension? | increase his angle of joint |
| what is abduction? | movement away from the midline ( ex: aliens come to abduct ) |
| What is adduction? | movement towards the midline |
| what is rotation? | turning around axis |
| what is pronation? | Palms down |
| what is supination? | Palms up |
| What is Dorsiflexion? | toes upward |
| what is plantarflexion? | toes downward |
| what are the uses of positioning landmarks ? | are body parts or structures that help the X-ray technologist place a patient in the correct position. |
| What should the central ray (CR) be aligned parallel to? | Anatomical structures |
| How should the long axis of the body part be positioned? | Aligned with the image receptor (IR). |
| In an AP projection, which way does the patient face? | Face the X-ray tube with the back against the image receptor. |
| In a PA projection, which way does the patient face? | Face the image receptor (front against the image receptor). |
| Describe routine positions for the upper extremities and why they are important in diagnostic imaging? | standard ways to position the upper extremities so the X-ray is clear and accurate. |
| How are KVP adjustments made ? | increase KVP by 3-5 for fiberglass cast |
| whatâs the purpose of AEC ? | is a system used in X-ray and imaging machines to automatically stop the radiation beam once the digital detector or film has received the right amount of energy to make a clear picture |
| what is the AEC role in patient safety ? | Lowers the risk of giving a patient too much radiation. |
| when and why are grids used ? | to absorb scatter radiation and improve image contrast |
| what are the components of the Xray system? | x ray tube - produce x ray generator - supplied electrical energy control/operating console - select exposure factors |
| what is the difference in Xray table ? | Fixed - stationary table ( routine exams ) floating - table top moves in multiple directions elevating - adjust height for patient accessibility Trauma - for injured patients who canât move |
| what is the difference in support systems? | Ceiling- mounted tube support moves on ceiling tracks floor- tube attached to floor column U - arm - tube and receptor move together C- arm - used in fluoroscopy and surgery |
| how to center the CR for hand and wrist imaging ? | For a routine hand exam, center at the third metacarpophalangeal (MCP) joint. For a routine wrist exam, center at the midcarpal area, specifically the scaphoid or carpal bones. |
| what is importance of image orientation? | prevent diagnostic errors, ensure accurate left-right side identification, and guide safe surgical planning |