X-ray Imaging System Components

The basic components are the x-ray tube, operating console, x-ray generator, and ancillary parts.

Controls typically include mA and time (or mAs), kVp, and a switch to make an exposure.

The primary function is to control radiographic techniques and modify incoming voltage and current to supply the x-ray tube with power.

<p>Transformers transfer electrical energy between circuits and adjust voltage levels using electromagnetic induction.</p> Signup and view all the answers

<p>Transformers operate through electromagnetic induction, where an alternating current in the first coil induces an alternating current in a second nearby coil.</p> Signup and view all the answers

<p>The voltage in the second coil depends on the ratio of the number of windings in the second coil to those in the first coil.</p> Signup and view all the answers

<p>AEC is a system that automatically adjusts exposure settings, while APR consists of preset exposure settings based on anatomical areas.</p> Signup and view all the answers

<p>Controlling techniques is essential for optimizing image quality and ensuring patient safety.</p> Signup and view all the answers

<p>Rectification is the process of converting alternating current (AC) to direct current (DC), which is necessary for x-ray tubes to ensure electron flow in only one direction.</p> Signup and view all the answers

<p>Half-wave rectification wastes half of the power supply and requires twice the exposure time compared to full-wave rectification.</p> Signup and view all the answers

<p>Full-wave rectification uses four diodes to rectify the entire AC waveform, resulting in a more efficient use of power and reduced exposure time.</p> Signup and view all the answers

<p>A three-phase generator maintains a nearly constant high voltage due to superimposed waveforms, providing better quality and quantity of x-rays.</p> Signup and view all the answers

<p>X-rays produced near zero voltage have low energy and low penetrability, making them ineffective for diagnostic purposes.</p> Signup and view all the answers

<p>Diodes act as rectifiers that allow current to flow in only one direction, facilitating the conversion from AC to DC.</p> Signup and view all the answers

<p>The type of generator affects both the quality and quantity of photons produced per unit of time, influencing diagnostic outcomes.</p> Signup and view all the answers

<p>A single-phase generator produces a single-pulse or two-pulse DC waveform with voltage swings ranging from zero to maximum potential 100-120 times each second.</p> Signup and view all the answers

<p>They provide a more constant voltage and can produce very short exposure times.</p> Signup and view all the answers

<p>It produces a nearly constant potential voltage waveform, resulting in better image quality at lower patient radiation doses.</p> Signup and view all the answers

<p>A high-frequency generator typically produces frequencies ranging from 500 to 40,000 Hz.</p> Signup and view all the answers

<p>Low voltage ripple leads to greater radiation quantity and quality by reducing the number of low-energy x-rays produced.</p> Signup and view all the answers

<p>It allows for exceedingly short and high-intensity exposures, increasing effectiveness during imaging.</p> Signup and view all the answers

<p>They utilize inverter circuits that convert DC into a series of high-frequency AC pulses, allowing for smaller designs.</p> Signup and view all the answers

<p>They are more expensive, bulky, and occupy significant floor space.</p> Signup and view all the answers

<p>Transformers are used to adjust the voltage and current levels to suitable ranges for x-ray tube operation.</p> Signup and view all the answers

<p>To increase the voltage supplied to the x-ray tube for effective electron acceleration.</p> Signup and view all the answers

<p>If the number of secondary turns (NS) exceeds the primary turns (NP), the secondary voltage (VS) increases; if NS is less than NP, VS decreases.</p> Signup and view all the answers

<p>The autotransformer supplies a reduced voltage for the low-voltage filament circuit.</p> Signup and view all the answers

<p>The high voltage section includes the filament transformer, high voltage transformer, and rectifiers.</p> Signup and view all the answers

<p>Oil immersion provides electrical insulation for the components, ensuring safe operation.</p> Signup and view all the answers

<p>Thermionic emission occurs when the filament is heated, causing electrons to be emitted from the cathode.</p> Signup and view all the answers

<p>Common wall plugs supply 60 Hz alternating current (AC), which is converted to high voltage for x-ray production.</p> Signup and view all the answers

<p>High voltage refers to the kilovolt levels used to accelerate electrons in the x-ray tube.</p> Signup and view all the answers