Interview Questions.

Question 1. Explain The Principle Of X-ray In Radiology?

Answer :

X-rays are the form of radiation with a particular wavelength. When it passes thru human frame, exceptional tissues absorb this radiation in a different way, relying upon the tissues density. Moreover, based totally at the body tissue and bone density, it'll create an picture on the movie.

Question 2. What Are The Radiations And Technology That Radiologist Uses?

Answer :

Radiologist makes use of an array of imaging technology that includes

X-rays radiography.
Ultrasound.
Computed tomography.
Nuclear drug treatments.
Positron emission tomography (PET).
Magnetic Resonance Imaging (MRI).
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Question 3. Mention What Is The Unit To Measure X-rays Exposure?

Answer :

The unit of x-rays publicity is impulses.

Question four. What Type Of Image Will It Produce When Using The Bisecting Angle Technique, Directing The X-ray Beam Perpendicular To The Long Axis Of The Teeth?

Answer :

It will produce an elongation of teeth pictures.

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Question 5. Is It Dangerous If A Person Is Exposed To X-rays Frequently?

Answer :

If someone is uncovered to x-rays for clinical cause, then it ought to now not be dangerous as it emits a low stage of radiation. However, if he/she is uncovered for longer period then it'll be risky.

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Question 6. In U.S.A, Who Regulates The Devices Used For Radiation And Monitor Its Usage?

Answer :

In U.S.A, The Food and Drug Administration (FDA) video display units the manufacture and sale of the gadgets. While, State Health Department maintains the watch at the use and release of radioactive materials along with manufacture and sale. NRC (Nuclear Regulatory Commission) and DOE (Department of Energy) will monitor how humans work with diverse gadgets and radioactive materials.

Question 7. What Is An Early Clinical Sign Of Excessive Acute Exposure To Radiation?

Answer :

The early clinical sign of immoderate acute exposure to radiation is ERYTHEMA.

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Question eight. Explain What Do You Mean By Latent Effect In Radiology?

Answer :

The latent impact in radiology is cited the time period between the exposure to radiation and the findings of scientific signs and symptoms.

Question nine. What Is The Optimal Temperature Of The Developer Solution In A Manual Film Processing Setup?

Answer :

The gold standard temperature of the developer solution is 68-degree F.

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Question 10. Explain What Is Emulsion?

Answer :

Emulsion is the maximum important factor of x-ray movie, it's far made up of silver halide crystals suspended in gelatin. The x-rays from the intensifying screens engage with emulsion and transform records to the film.

Question 11. Why A Grid Is Sometimes Placed In A Cassette?

Answer :

A grid is sometimes placed in a cassette to avoid scatter radiation from the movie and diminishing the element of the image.

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Question 12. What Is A Type Of Radiations Used In Dental X-rays?

Answer :

In dental x-rays, electro-magnetic radiation are used.

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Question 13. List Out The Differences Between X-rays And Mri?

Answer :

To seize inner view of the body, X-ray makes use of radiation – MRI uses the water in our body and the proton in the water molecules to seize the inner view of the body. It uses magnetic radiation.
X-rays are mainly used to examine the structure of bones and tooth. – MRI are used for more than one purposes like analysis of smooth tissue, spinal cord injury, ligament and tendon harm, brain tumors, etc.
A complete rip-off is performed in few seconds – Scanning typically runs for about 30 minutes.
Excess publicity may additionally motive irreversible harm like most cancers – There isn't any facet results of MRI.
X-ray does now not have performance to seize an photograph from a distinct attitude, patient himself have to regulate their role for taking photo from a distinctive perspective. – three-D isotropic imaging can be produce and in some other plane with MRI.
X-rays are cheaper and much less space occupying than MRI – MRI wishes greater room, and its expensive in comparison to X-rays.
Question 14. Why Lead Foil Sheet In The Film Packet Is Used?

Answer :

In the movie packet, the lead foil sheet is used to shield the movie from the lower back-scattered radiation.

Question 15. Explain How X-ray Tube Works?

Answer :

X-ray tubes are energy converter; it gets the electric strength and converts into two other kinds X-radiation and warmth. The electrons are converted to protons records of X-radiation, whilst the warmth emitted is taken into consideration an undesirable product.

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Question sixteen. What Does An X-ray Tube Consist Of?

Answer :

An X-ray tube consists of :

Cathode.
Anode.
Expansion bellow.
Tube envelop.
Tube housing.
Cooling di-electric powered oil.
Rotor.
Induction Stator.
Tube window.
Question 17. What Is The Unit Of Measuring Radiation Dosage?

Answer :

The medical unit of dimension for radiation dose is millisievert (mSv). Other radiation dose size includes rad, rem, roentgen, sievert and gray.

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Question 18. What Are The Cells That Are Most Sensitive To X-radiation?

Answer :

The most touchy cells in people to X- radiation are small lymphocytes. It means over publicity to X-radiation will first affect your immune gadget.

 

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Question 19. Explain What Is Densitometer Is Used For?

Answer :

A densitometer is used to observe the connection among the intensity of the exposure of the movie and the blackness after processing.

Question 20. What Is The Maintenance Process In X-ray Unit?

Answer :

Maintenance techniques in X-ray unit consists of :

Check for radiation leakage: Once in a month you could test for radiation leakage through checking radiation protective ( damaged window, broken collimator, glass or shutter, hollow inside the wall).

Operation in Positive Beam Limitation (PBL): Make certain that the x-rays are inhibited when inside the PBL version and now not at seventy two” or forty two” SID. This have to be performed on a daily foundation.

Check for filter out or mirror: If kV is more than 49kV even if collimator clear out is off, exposure to x-rays ought to be inhibited. The ready mild have to be grew to become off. This take a look at also can be completed on each day basis.

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Question 21. Explain Radiology?

Answer :

Radiology is a clinical uniqueness that employs the use of imaging to both diagnose and treat disease visualised inside the human frame. Radiologists use an array of imaging technologies (together with X-ray radiography, ultrasound, computed tomography (CT), nuclear remedy, positron emission tomography (PET) and magnetic resonance imaging (MRI) to diagnose or deal with sicknesses. Interventional radiology is the performance of (typically minimally invasive) clinical strategies with the guidance of imaging technologies.

Question 22. What Are Some New Areas In Radiology?

Answer :

Combined imaging techniques, which include PET-CT provide exciting future opportunities for disorder detection and tracking

Functional MR imaging.
Molecular imaging.
Cardiac MR and CT.
Breast MRI.
Expanding interventional strategies.
Question 23. What Conditions Will You Commonly See As A Diagnostic Radiologist?

Answer :

There are some distance too many to list. Any disease or affected person presentation which could probable have a physical/imaging manifestation from the cranial vertex right down to the hints of the toes is a possibility within the radiology branch. There's plenty to recognize, however that's what makes it challenging and gratifying!

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Question 24. What Is The Call Frequency?

Answer :

During residency: This varies from application to program relying on the number of web sites protected and quantity of citizens. At McMaster, we do name roughly 1 in 7 or 8 (averages out to 3-4 calls consistent with month). We cover two web sites on each name shift. Our hospitals have installed a assessment policy whereby citizens do not need to travel among websites, that allows you to cover assessment-more desirable examinations.

As a body of workers radiologist: Your name frequency will rely on the range of radiologists on your practice, in addition to the imaging modalities and technologist/imaging hours your health facility gives. As a hard estimate, it there are 4 radiologists in your organization, you will be on-call 1 in four; if there are 13 of you, then it is 1 in 13, and many others.

This may additionally change when you have specialised capabilities, such as in interventional radiology. The other determinant of name relies upon on whether you are working at an educational centre (with resident and fellow name-insurance) or a community setting. For the latter, another thing which impacts the busyness of your name is whether or no longer your centre offers 24/7 CT, US or MRI imaging.

 

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Question 25. What Is The Unit Of Time Used To Measure X-rays Exposure?

Answer :

Impulses.

Question 26. A Diagnostic Film Is Produced Using 10 Ma And .5 Second. What Exposure Time Is Needed To Produce The Same Film At 20 Ma?

Answer :

.25 seconds.

Question 27. A Quality Radiograph Is Obtained Using A four Inch Pid And An Exposure Time Of 3 Impulses. The Pid Was Removed And Replaced With A 16 Inch Pid. What Should The New Exposure Time Be To Maintain Image Density?

Answer :

48 impulses.

 

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Question 28. Who Discovered The X-radiation?

Answer :

Ruentgen found the X-radiation.

Question 29. When Onization Occurs?

Answer :

when atoms lose electrons; they turn out to be poor in bad fees and consequently behave as positively charged atoms.