Skip to main content

X-ray Generators

The X-ray Generators delivers the electrical power to energize the x-ray tube and permit the section of x-ray energy, X-ray quality, and exposure time and dissipation rates specific to a generator and x-ray tube target housing.


An x-ray generator is a device that helps to produce x-ray, together with an  x-ray detector, it is commonly used in a variety of applications including Medicine, x-ray, electronic assembly inspection, and measurement of material thickness in a manufacturing operators.

Types Of X-ray Generators 
• Single Phase Generators 
• Three Phase Generators 
• High-frequency Generators 
• Constant Voltage Generators 

- Single Phase Generators: - (also known as single alternator) is an alternating current electric generator that produce a single, continuously alternating voltage.

- Three Phase Generators: - work by producing three separate waves of AC power that operate in a sequence ensuring that there is always a continuous flow of energy and that’s the power level never dips as it does with single phase generator. Because of this uninterrupted reliability, Three phase generator are much more powerful.

An AC Three Phase Generators is simply three AC single phase generators. These generators run sequentially with an offset of 120° between them taken two at a time. Thus, the generator produces three waves of AC voltage in one cycle facilitating the consistent supply of constant voltage.

Three Phase Generators: – uses a transformer to the voltage that is applied across the x-ray tube The generator also rectifies the waveform from Alternating Current AC to Direct Current DC.

- High-frequency Generators: - Fully rectify AC current and supply the tube with DC current (High frequency means measuring even up-to 100KHZ instead of standard supply frequency of 50KHZ) The present HF X-ray generators use the frequency inverter-rectifier technology, to produce near constant potential.

Constant Voltage Generators: - Achieve a DC high voltage with minimal ripple through the use of a closed loop linear voltage Controller (e.g. High voltage triodes) in series with the tube, High frame rates and voltage are achieved,
- Constant potential generator use a complex technology with high cost investment and operation, and consequently have lost popularity.

Reference

Comments

Popular posts from this blog

Angiography

  Angiography is a medical imaging technique used to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins, and the heart chambers. An arteriography is  a procedure that produces an image of your arteries . During the procedure, your doctor will use contrast material, or dye, and X-rays to observe the flow of blood through your arteries and note any blockages. This procedure, also known as an angiogram, can be done on many different parts of your body. Venography is a procedure to demonstrate the veins by using contrast media and others materials as for arteriography INDICATIONS   • Blockage of the blood Vessels. • Suspected aneurysm. • Renal artery stenosis. • Renovascular hypertension. • Trauma. • Palpable renal masses. •Chronic pyelonephritis. • Renal abscesses. and determination of the suitability of a (donor) kidney for renal transplantation. CONTRAINDICATIONS   Coagulopathy. Decompensated conge...

HAND X-RAY

The basic projections are P.A and Lateral , ➢ Postero anterior (Dorsi-palmar P.A):- The patient is seated along side the table, the forearm is placed pronated on the table with the palmar surface of the hand in contact with the cassette. With the fingers slightly separated and extended to ensure that they remain in contact to the cassette. Centering point: - Center to the head of the third metacarpopalangeal joint. ➢ Dorsi-palmar oblique: - From the PA position the patient will now rotate his/her hand approximately 45° degrees, ➢ Another modified 15° degrees, Centering point: - Center to the 4th metacarpal bone. Essential image characteristics, The image should demonstrate the bones clearly and soft tissue outline no rotation or motion. References: MIT. Abdussalam A. Madaki and Cowen A.R (2019) Tutorial on the image quality characteristics of radiographic screen film combinations and their measurement, (medical Devices Directorate Evaluation report), MDD/94/34,ALTH.