mid term

__________ is a universal standard that allows various digital imaging devices to work together in a network no matter who the manufacturer is

The graphic display for the distribution of pixel values ________

T/F. DR systems as opposed to CR systems are considered indirect capture

T/F. The DQE is higher for DR when comparing to CR.

T/F. Digital imaging processing refers to computer manipulation applied to digital images

An array of numbers arranged in grid and rows is called?

Because of improved contrast resolution CT is able to differentiate tissues with ___________

Contrast is adjusted by window changes, WW, WL. Window width determines ___________ contrast number of grey levels

Window Level determines _________

Decreasing the signal to noise ratio (SNR) will increase image quality.

The measured x-ray transmission values are__________

The gray scale on the doctor’s monitor is much ________ than the one on the x-ray floor.

T/F. Direct digital Radiography flat panel thin film transistor (TFT) can be indirect or direct capture.

2 Trauma Guidelines –

Extreme eversion of the foot is a sign of traumatic injury to the ________

Which position is recommended for a mobile AP chest x-ray of a critically ill patient?

is passed through the nose to the stomach, allowing food and medications to travel to the stomach.

Radiographic examination of the uterus and the uterine tubes is termed_______?

central line is placed in the large vein in the chest, neck or groin called?

which vein/ artery used for central venous lines

Which exam is preformed 3 months after insertion of an IUD to determine effective uterine tube occlusion.

T/F. Exposure field recognition needs specific collimated border, otherwise there will be a poor quality image.

T/F. Automatic re-scaling makes data output and data display consistent even when there are errors of exposure.

Anode heel effect is more noticeable in mobile radiography because of _______

Increased exposure over time is__________?

During operative cholangiogram with contrast into the biliary system, what projections are used?

T/F. When taking a portable chest x-ray on a patient receiving O2 therapy its safe to remove O2 during set up and exposure?

A swan Gantz Catheter measures?

Ideal location for an endotracheal tube is _________?

The preferred location of a central venous line tip is the ________?

What is the most common complication associated with CV line placement?

To relieve a large pneumothorax what tubes do we insert in the patient?

T/F. Your responsibility as a radiographer is to reattach the catheter line?

T/F. Cholecystectomy can be done during ERCP?

At what vertebral level should the tip of the endotracheal tube be placed?

An ICU patient with right pleural effusion which exam is appropriate to do

How often should CR PSP be erased?

T/F. High SNR is desirable in digital environment?

Digital format that is standard for electronic images?

T/F. Does automatic re-scaling of the histogram compensate for under and over exposure, thus leading to quality images?

Where is the latent image in the CR formed?

Mathematical formulas for digital images reconstruction of specific exams are

The modality worklist is a function enabled by the________?

__________ is the numeric value representative of the exposure that the IR received?

Subtraction, edge enhancement and annotation are known as?

T/F. Fim screen, CR, DR can be used for mobile portable radiography?

The “S” value is used to represent?

T/F. The image looks different in the doctor’s screen than the floor screen because it has more pixels.

T/F. Changing sampling frequency affects the spatial resolution of the digital image.

Swan Gantz catheterization goes where and what function

Contrast is adjusted by windowing, changing WL and WW. Window level determines the________?

The central ray must be centered within how many inches of the midline of the IR?

Most grids used for mobile radiography have a ratio of?

To keep exposure times to a minimum during mobile radiography the recommended SID is?

Name 3 items that should be on a every mobile radiography machine?

During mobile exposure the radiographer should be how far away from the tube?

During mobile radiography the least amount of radiation is found at?

According to the federal regulation source to skin distance (SSD) during mobile radiography may not be less than _____ inches?

How long should a patient lie in position for a lateral decubitus exam before taking the image?

Which position is recommended for a mobile chest exam on a critically ill patient?

T/F. Increased scatter will result if the grid IR is leaning on the mobile study during a lateral decubitus exam of a chest or abdomen?

T/F. The generators used for mobile x-ray units have the same kilowattage rating as stationary x-ray units?

T/F. Mobile radiography units can have direct digital capabilities when wired or wireless?

T/F. Scattered and leakage radiation are much lower energy than that of the primary bream?

In general, during fluoro exams the preferred technique is?

The biological effects of radiation are known to be influenced by ?

Skin exposure __________ as the kilovoltage peak _________ and the milliamperage seconds _______?

What is the greatest contribution of unnecessary radiation exposure to the patient?

T/F. The California Radiation Control Regulations define dose to mean radiation absorbed per unit mass. Whole body dose means exposure to major portions of the body, trunk and lens

Must be posted where x-rays are taken?

According to the California Radiation Control Regulations, what is not defined as occupational dose?

In radiography where dose the major source of secondary radiation come from?

T/F. For fluoro system occupied with an Automatic Brightness Control (ABC) mechanism and where the x-ray tube is fixed below the table, moving the image intensifier away from the patient, will reduce patient dose.

If the exposure area is doubled by opening the collimation patient dose will?

What is the term for the ability of the human eye to perceive detail.

According to California Radiation Control Regulations, how long must individual radiation monitoring records be preserved by an employer?

The California Radiation Control Regulations require that protective aprons used during fluoroscopy shall be of at least______?

What is the function of ABC or AEC mechanism in an image intensifier fluoroscopic system?

T/F. The California Radiation Control Regulations require record keeping regarding results of require calibration, survey and testing each receipt, transfer and disposal of x-ray unit machines radiation exposure of all individual for whom personal monitoring is required.

What is the Half Value Layer?

Which cells are most sensitive to radiation

Where is the contrast medium injected for a myelogram?

What patient position is used post myelography during recovery.

What patient position is used post myelography during recovery.

How is the patient head positioned during myelogram to prevent contrast passing into the vertebral ventricles?

T/F. The salivary glands produce 1 liter of saliva per day?

Facet injections, nerve root blocks, and epidural steroid injections are all types of ________ procedures?

Which structure is air filled on double contrast image of the stomach obtained in the PA oblique projection, RAO position?

Which methods are used to administer barium for a radiographic examination of the small intestines?

Two advantages of using the recumbent position for images of the esophagus?

PSP technology commonly refers to which modality

The __________ is coated with light emitting crystals to absorb electrons and emit light?

__________ and ________ projections are performed during myelography?

The brain and the spinal cord are enclosed by 3 protective membranes called the?

The most common osteoporotic fracture is found in the _____?

T/F. Lead aprons improved in the 1940’s?