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Doctor insights on: X Ray Vs Ct Radiation

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Dr. Neigatha Graney
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Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


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Do nuclear scans expose a patient to more radiation than an X-ray or CT scan?

Do nuclear scans expose a patient to more radiation than an X-ray or CT scan?

Not usually: Depends on nuclear study. A lot of CT exams such as chest and abdomen have more radiation dose than most nuclear medicine studies. A bone scan is more dose than the CT of brain. In any event if study is necessary for diagnosis to help patient the dose becomes insignificant. ...Read more

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How much cost/how much radiation on new CT scans would Coronary Calcium Scan be on the whole body? Could this be done with new tech X-ray and no CT?

How much cost/how much radiation on new CT scans would Coronary Calcium Scan be on the whole body? Could this be done with new tech X-ray and no CT?

Very small amount: However, a coronary calcium scan should only be done in the presence of intermediate or high risk of having coronary artery disease, Asymptomatic individuals without at least 3 risk factors for coronary artery disease (Diabetes, Hypertension, tobacco use, elevated cholesterol, Obesity, etc.) have a very high likelihood of having a falsely positive scan, thus rendering an abnormal scan unreliable. ...Read more

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I have some right superior mediastrinal widening in chest x ray. Dr asking for CT san. I m worried about radiation from ct. Should i get CT scan?

Yes: You need to know what the widening is. Most time it is a vessel . Sometimes lymph nodes. The amount of radiation from one ct is minimal as long as the number of these studies is kept to a minimal amount. Of course that would depend on what they find. ...Read more

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What is the difference between nuclear medicine radiation and ct/x-ray? Is it true that the only radiation you receive in nuclear medicine is the radioactive tracer that is administered into your vein? If so, does this radiation not accumulate as ct/x ray

What is the difference between nuclear medicine radiation and ct/x-ray? Is it true that the only radiation you receive in nuclear medicine is the radioactive tracer that is administered into your vein? If so, does this radiation not accumulate as ct/x ray

Yes.: In nuclear medicine a radioactive "tracer" (e.g. Technetium) is injected into a vein and the gamma rays are emitted from the body and detected by a gamma camera placed against the body to create an image. The radioactivity decays over time and is also excreted from the body. With ct, the x-rays are passed through the body from an xray tube to create an image and do not reside in the body. ...Read more

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Had 2 chest x rays front/side views.Had 1 CT abdomin, 1 X-ray of neck front/side, 1x ray of my spine for scoliosis front/side, worried radiation exspose?

Had 2 chest x rays front/side views.Had 1 CT abdomin, 1 X-ray of neck front/side, 1x ray of my spine for scoliosis front/side, worried radiation exspose?

Read more about it: To learn more about medical imaging and radiation risk, please check out: http://www.Conciergeradiologist.Com/ct-scan-radiation.Html and http://www.Conciergeradiologist.Com/radiation-exposure.Html. Properly indicated imaging studies represent, by definition, situations where the risks of radiation exposure are outweighed by the benefits to the patient. ...Read more

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My 3 yo may have enlarged adenoids. Dr wants to do x-ray. He's had 7 chest x-rays and one brain CT scan. I'm afraid of all of the radiation. Advice?

My 3 yo may have enlarged adenoids. Dr wants to do x-ray. He's had 7 chest x-rays and one brain CT scan. I'm afraid of all of the radiation. Advice?

Probably ok: You always have to weigh benefit versus damage with ionizing radiation. The amount of radiation that the child received so far is acceptable. The worst amount of radiation is from repeat ct exams especially of chest and abdomen . Adenoid exam should involve a single lateral projection of the neck. If snoring, mouth breathing, or sleep apnea probably problem with enlarged adenoids and tonsils. ...Read more

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Should I do & how much radiation CT scans for one dental implant causes vs regular chest/head CT scan or one digital tooth x ray. I am curious to know

Should I do & how much radiation CT scans for one dental implant causes vs regular chest/head CT scan or one digital tooth x ray. I am curious to know

Radiation dose chart: We only want to take the minimum number and type of x-rays or scans in order to properly diagnose and treatment plan. Without that we might either miss something or the final result might be compromised. Here is a good website for you to look at: http://www.Ans.Org/pi/resources/dosechart/. ...Read more

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What has more radiation ct's or x-rays? How much more?

CT: Ct has significantly more radiation than x-rays though the exact dose depends on a lot of specifics. The radiation from either is not extremely high to the extent that you should forego the exam when it is medically necessary. ...Read more

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I am 35 year old female. Had 6 CT plus 2 mammograms and a few x rays in the last 2 years. Just learned about radiation danger. Now I am terrified.What can I do to repair cell damage. Please so scared?

I am 35 year old female. Had 6 CT  plus 2 mammograms and a few x rays in the last 2 years. Just learned about radiation danger. Now I am terrified.What can I do to repair cell damage. Please so scared?

Radiation damage: The past is the past. Antioxidants and healthy living are the best recommendations for you. If down the road you get systemic symptoms such as weight loss or chronic headaches please see your physician. An MRI is a radiation free test that if you need one you should have instead of ct or x-ray. Relaxation techniques may be of benefit to you as well. ...Read more

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I had 2 ct scans and 5 x-rays in past 2 years. All ok. No more. Scared of diagnostic radiation. Am I for sure going to get cancer compared to others?

I had 2 ct scans and 5 x-rays in past 2 years. All ok. No more. Scared of diagnostic radiation. Am I for sure going to get cancer compared to others?

No: With 2 CT scans and 5 x-rays in 2 years, you have had significant radiation exposure. it is unlikely that you have significantly increased your likelihood of getting a cancer in the future with that small amount of exposure. However, your concern is based on fact as excessive radiation exposure can increase cancer risk. Yor are 23 and should not continue that pattern of radiation exposure. ...Read more

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Hi, i had 4 CT scans including one headfew few chest x-rays in last four years i know it ' a too much radiation what should I do know to prevent any d?

Hi, i had 4 CT scans including one headfew few chest x-rays in last four years i know it ' a too much radiation what should I do know to prevent any d?

Stop worrying: Ash, the radiation you get from a CT scan is about the same as the extra amount that an airline pilot gets each year because of his/her work, and about a 1/17th of what's considered safe for a year for a radiation workers. Nobody's showed increased cancer in either group. Truth is, I'm glad you got the imaging studied you needed. You should ignore crooked doctor-bashing websites. ...Read more

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Is taking iodine helpful when exposed to radiation via CT scans /multip. X-rays? The japanese took it after bomb and nuclear disaster.

Is taking iodine helpful when exposed to radiation via CT scans /multip. X-rays? The japanese took it after bomb and nuclear disaster.

See answer: Iodine “tablets” doesn’t prevent damage from radiation per se, but blocks the uptake of radioactive iodine. After nuclear disasters in addition to emitted “waves”, radioactive isotopes such as radioactive iodine are created. Taking the iodine supplement only blocks those – and would have no benefit in a ct scanner to prevent concerns from x-radiation exposure. ...Read more

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Is there a tool that a DR. can use to check the level of patients radiation exposure from all the x-rays and CT scans in ones life?

Is there a tool that a DR. can use to check the level of patients radiation exposure from all the x-rays and CT scans in ones life?

No: The list of Possible Things To Worry About from cradle to grave is infinitely long. The radiation exposure from medical testing is low on that list, unless one has a bad medical disorder and is getting repeated scans over and over. ...Read more

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How high is your chance of getting cancer compared to someone who never had 2 ct scans or a few x Rays? Is radiation used freq in hospitals to blame?

How high is your chance of getting cancer compared to someone who never had 2 ct scans or a few x Rays? Is radiation used freq in hospitals to blame?

Misleading claim: The radiation you get from a CT scan is maybe 3 mSV, which is the same as the extra radiation an airline pilot gets in a year from flying. Nobody's shown an increase in cancer in pilots. Radiation from chest x-rays is far less. Frankly, you need to stop reading doctor-bashing sites by crooks posing as "humanitarians" -- life's hard enough without fearing the imaging studies you need. ...Read more

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I have had four x-rays for my chest, one CT of my abdomenand one bone scan. I am worried whether I have an increased chance of developing cancer from this radiation.

I have had four x-rays for my chest, one CT of my abdomenand one bone scan. I am worried whether I have an increased chance of developing cancer from this radiation.

Don't worry : The amt from the x-rays is almost nothing. Similar to air travel which i assume you don't worry about getting cancer. One ct scan of the abdomen and a bone scan are equivalent to about 7 years of normal life in the us. So same amt of radiation from sun and cosmic rays in that time. Radiation from imaging at those levels has never been shown to cause cancer. ...Read more

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I've had a neck ct scan and four x-rays and a hida scan? I'm worried about the radiation exposure... Should I? All in the past year, I'm a 34yr F.

CT scan; not the Xra: CT scans involve ~400 times more radiation exposure as Xrays, & so if u worry abt unnecessary radiation risk, limit CT scans. HIDA & Xrays involve so little radiation that u prob got as much from walking outside in 1 yr as u got from those tests. At 34, most of ur organs have developed, so there's no immediate threat; however, there's a lifetime radiation limit. Too much testng will catch up 2u@80 ...Read more

Gamma Rays (Definition)

This is light of extremely short wavelengths typically produced either among the stars / in cosmic rays or by radioactive element decay. Gamma rays form the background of normal radiation in which we all live; it is substantially greater than the exposure we get from imaging scans or should get from ...Read more