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Radiographic Positioning > Final exam > Flashcards

Flashcards in Final exam Deck (194)
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181

Alternative modalities or procedures
Sonography:

May be used to detect pleural effusion.
May be used guidance when inserting a needle to aspirate fluid.

182

Alternative modalities or procedures
Echocardiogram

ultrasound of the heart.

183

Alternative modalities or procedures
Nuclear Medicine

*With the use of radionuclides can be used to evaluate and diagnose pulmonary diffusion condition or pulmonary emboli.
*Pulmonary emoboli- a suddenblocakge of an artery of the lung.

184

Alternative modalities or procedures
MRI

Used to evaluate and diagnose such pathologies as congenital heart disorders, graft patency, cardia tumors, thrombi, pericardial masses, and evaluation of aortic dissection and aneurysms.

185

Basic projections vs. special projections

Basic are standard, sometimes called "routine." They are those projections taken as extra or additional procedures to demonstrate certain pathologic conditions or specific body parts, or when the patient is not able to cooperate fully.

186

Chest radiography
Basic images:

PA and lateral.

187

Chest radiography
Special images:

AP supine or semierect
lateral decubitus
AP lordotic
Anterior oblique
Posterior oblique

188

PA projection.
Pathology demonstrated:

Pleural effusions
Pneumothorax
Ateclectasis

189

PA projection
Technical factors:

14x17 IR
Placed lengthwise or crosswise
Brid
110-125 kVp
Sheild radiosensitive tissue outside region of interest.

190

PA projection
Shielding:

Place a shield between X-ray tube and patient's pelvis. References also suggest another shield placed between patient gonads and the IR for back scatter protection.

191

PA Projection
Patient position

Erect
weight evenly distributed
chin elevated
hands on lower hips, palms out
roll shoulders forward again IR to allow scapulae to move laterally
depress shoulders to move clavicle below apices
adjust shoulders so they are in same transverse plane

192

PA projection: part position

Center MSP of body to midline of the IR.
Ensure no rotation: MSP perpendicular; MCP parallel to IR.
Adjust CR and IR as needed to level of T7 for average patients.
Top of IR will be about 1 and a half inches to 2 inches above relaxed shoulders.

193

PA Projection
Central Ray

Perpendicular to center of IR - centered to MSP at level of T7.
IR centered to CR.
Minimum SID of 72 inches.

194

PA Projection
Collimation:

On all four side to area of lungs.
Top border of illuminated field to level of vertebra prominens.
Lateral borders of illuminated field to skin margins.