Download Free Medical INTERACTIVE SESSION - RADIOLOGY PowerPoint Presentation

INTERACTIVE SESSION - RADIOLOGY PowerPoint Presentation

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Description : Download free RADIOLOGY PowerPoint presentation with slides on RADIOLOGY and diagnosis.

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Published on : Aug 17, 2017 | Views : 3564 | Downloads : 12

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Slide 1-

Emergency Radiology: The Basics
Slide 2-

Study Objectives After studying, the readers should be knowledgeable of Basic physics of different imaging modality, especially plain radiography, US and CT. Advantages and limitations of each modality. Basic rules in requesting radiology examinations. Basic principle of picture archiving communication systems (PACS). Current and future trends in radiology.
Slide 3-

Basics: Plain Film Radiography Plain film radiography uses x-ray as a source to create an image on the screen, and projected as a hard-copy image or into a computer. It is a 2D image of a 3D object (human organs), this should be kept in mind and there is extensive overlapping structures in plain film radiographs. This issue is resolved by… Do at least 2 views perpendicular to each other; for example, chest x-ray in PA and lateral views. Do a cross-sectional imaging such as CT, MRI or ultrasound to overcome the overlapping.
Slide 4-

Basics: Plain Film Radiography There are 5 relative different radiodensities in medical x-ray. This is presented from the least dense to the most dense particles (Dark to bright)
Slide 5-

Basics: Plain Film Radiograph Projections (views) of radiograph determined by Location of the x-ray tube and the x-ray film in relation to the patient’s anatomy. For example, Postero-anterior (PA) view means the x-ray beam travels from back to front of the patients and hit the film in the front of the patients.
Slide 6-

Chest x-rays of the same patient performed in the same day, in two different projections (above; PA, below; AP). The difference between PA and AP, is the organ (or part of the body) that is closer to the film, will be better visualized. For example, in PA skull radiograph, the lesion in frontal bone will be better visualized than in occipital bone. In chest radiograph, different magnification causes the cardiac silhouette to be larger in AP projection. The rule is ‘put the film on the side of interest’.
Slide 7-

Basics: Plain Film Radiograph Projections (views) of radiograph determined by Position of the patient: this will define the heaviness of movable substances in our body. Air goes up against the gravity, free fluid follows the gravity. Right/left decubitus: Right lateral decubitus is putting the right side of the patient down. This is still a frontal (AP or PA) radiograph. Lateral cross-table: A lateral projection that is taken across the side of the patient when he/she is on the bed.
Slide 8-

Basics: Plain Film Radiograph Portable radiograph: The only indication is when the patient is “too sick to leave the bed”. Example - ICU patients, injured patients on the trauma board or in the operating rooms. Cons: Different magnification (distortion of the size of organs), decreased quality of the images. Usually it is done in AP projection, which is still different from AP projection performed in the radiography room.
Slide 9-

Basics: Plain Film Radiograph Stress radiograph: Put a stress (either patient’s own weight, force or extra weights to carry) on specific organs, usually joints. For example, acromioclavicular joints radiograph, standing knee radiograph, flexion/ extension views of the cervical spine.
Slide 10-

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