Fluro....Image Intensifiers

The invention of X-ray image intensifiers in the 1950s allowed the image on the screen to be visible under normal lighting conditions, as well as providing the option of recording the images with a conventional camera. Subsequent improvements included the coupling of, at first, video cameras and, later, CCD cameras to permit recording of moving images and electronic storage of still images.

Modern image intensifiers no longer use a separate fluorescent screen. Instead, a caesium iodide phosphor is deposited directly on the photocathode of the intensifier tube. On a typical general purpose system, the output image is approximately 105 times brighter than the input image. This brightness gain comprises a flux gain (amplification of photon number) and minification gain (concentration of photons from a large input screen onto a small output screen) each of approximately 100. This level of gain is sufficient that quantum noise, due to the limited number of x-ray photons, is a significant factor limiting image quality.

Define Flouroscopy

FLUOROSCOPY IS A RADIOLOGICAL STUDY THAT PROVIDES A APPLICATION OF DYNAMIC VIEWING OF ANATOMIC STRUCTURES.IT IS OFTEN USED TO OBSERVE THE DIGESTIVE TRACT AND THE COLON. FLUOROSCOPY IS USED IN MANY TYPES OF EXAMINATIONS AND PROCEDURES,SUCH AS CARDIAC CATHETERIZATION, ARTYROGRAPY, LUMBAR PUNCTURE,PLACEMENT OF IV CATHETERS,INTRAVENOUS PYELOGRAM,HYSTEROSALPINGOGRAM,AND ETC.FLUOROSCOPY MAY BE USED AS A DIAGNOSTIC PROCEDURE,OR WITH OTHER DIAGNOSTIC MEDIA OR PROCEDURES.

Linear Tomography Continued

The equpment used for linear tomography includes a rod that connects the IR to the x ray tube so that both the IR and tube can pivot on a fulcrum basis. Another dimension is a specialized grid. This grid has grid lines orchastrated in a particular way so that the image contains only the image that lies in the same object plane as the tube. These grid lines must be lined up with the length of the table

Linear tomography

Hey, what’s up…..? Before I go into explaining what linear tomography is let me explain what tomography is. Basically, tomography is a radiologic technique for obtaining clear X-ray images of deep internal structures by focusing on a specific plane within the body. Structures that are obscured by overlying organs and soft tissues that are insufficiently delineated on conventional X-rays can thus be adequately visualized.


Out of the many contending tomography modalities the simplest of the all is linear tomography, in which the X-ray tube is moved in a straight line in one direction while the film moves in the opposite direction. As these shifts occur, the X-ray tube continues to emit radiation so that most structures in the part of the body under examination are blurred by motion. Only those objects lying in a plane coinciding with the pivot point of a line are seen sharply on the diagnostic image.

The purpose of this approachy is the ability to image structure that would otherwise be superimposed by a diffrent tissue or organ. An advantage of linear tomography is its contrat resouloution... so it is easy to diffrenciate two structure from the other(this feature is enhanced with cintrast). A disavantage is the high patient dose.

What am I doing here?

hey, I'm just as confused as you are but im setting this page up as asked by my professor so im just waiting for any assignment that he may have for me to do. Anyone have any tips for student x ray techs trying complete school any advice or knowledge please share, it would be deeply appreciated.