Navigation Links
Full-body scan



Full-body scan, also known as a full-body CT scan, involves a CT scan of the patient's entire body to support the diagnosis and treatment of specific illnesses.

Contents

History and overview

CT scans were first used in medicine in the 1970s,[1] and they now play an important role in diagnosis in medicine. Controversy arises from the use of CT scans in the screening of patients who have not been diagnosed with a disease, or who do not have symptoms suggestive of a disease,[2] due to the low rate of finding disease, and the inconclusiveness of the cause of abnormalities seen.[3][4]

As with any test that screens for disease, the risks of full-body CT scans, (including radiation, incidental or wrong diagnosis, and a false sense of security in a test with error), need to be outweighed by the benefit of identifying a treatable disease at an early stage.[5] One of the risks of a full body CT scan is the relatively high doses of radiation.[6] Conventional CT scanners may expose patients to 10 mSv of radiation, or over a hundred times that of a chest x-ray.[7] However, the radiation risk of CT scanners used for screening may be less than this, and depends upon the mathematical model used for calculation.[6][8] Additional risks include the possible identification of incidental abnormalities of unclear significance.[3] This may lead to further unnecessary testing, which may be invasive.

Cost is an additional disadvantage; at a cost of US$600 to $3000 full-body scans are expensive, and are rarely covered by insurance.[9][10]

Other scans

Other CT scans may be used in screening for disease in high risk groups. These scans are more localized and are identical to those used in the course of treating a disease, the only difference being that these scans are done before any disease is found.

Low-dose CT scanning of the lungs may be done to screen for lung cancer, but it has showed varied success.[11] [12] CT colography, or virtual colonoscopy is a CT scan that looks for polyps that may develop into colon cancer. It has shown detection rates for polyps of size greater or equal to 8 mm that are comparable to traditional or "optical" colonoscopy. One of the downsides of imaging is that although they provide comparable detection rates, they have no inherent capability of treatment. For example, if polyps are found on virtual colonoscopy the next step is to perform a traditional colonoscopy to remove the polyps.[13]

Other types of scans include Heart, Brain, Bone density, Angiogram, Carotid artery. [1] [2]

Magnetic resonance imaging (MRI) scans are associated with a lesser radiation risk than CT scans, and are being evaluated for their use in screening.[14]

In popular culture

  • In the episode "Role Model" of the TV show House the lead character Dr. Gregory House refers to full-body scans as "useless" because they could find several things wrong in anybody.

References

  1. ^ Hounsfield GN. (Sept 1976). "Historical notes on computerized axial tomography". J Can Assoc Radiol 27 (3): 135-142. PMID 789383.
  2. ^
  3. ^ a b Brant-Zawadzki MN (Nov 2005). "The role of computed tomography in screening for cancer.". Eur Radiol 15 Suppl 4: 52-54. PMID 16479647.
  4. ^ Berlin L (Feb 2003). "Potential legal ramifications of whole-body CT screening: taking a peek into Pandora's box.". AJR Am J Roentgenol 180 (2): 317-322. PMID 12540423.
  5. ^ MacLean CD (Jan 1996). "Principles of cancer screening". Med Clin North Am 80 (1): 1-14. PMID 8569290.
  6. ^ a b McCauley TR (Feb 2003). "Radiation risk of screening CT". AJR Am J Roentgenol 180 (2): 540-541. PMID 12540469.
  7. ^ Radiologyinfo: Safety Radiation Exposure in X-ray Examinations. Retrieved on August 30, 2006.
  8. ^ Prokop M (Nov 2005). "Cancer screening with CT: dose controversy.". Eur Radiol 15 Suppl 4: 55-61. PMID 16479648.
  9. ^ Meyer M. (October 2002). Behind the Body Scan Craze. Retrieved on August 30, 2006.
  10. ^ Whole-body Scans More Marketing Than Science, Say Medical Physicists. American Institute of Physics. (August 26, 2002). Retrieved on August 30, 2006.
  11. ^ Diederich S, Wormanns D. (Aug 2004). "Impact of low-dose CT on lung cancer screening". Lung Cancer 45 suppl 2: 13-19. PMID 15552777.
  12. ^ Kashiwabara K, Kohshi S. (Sep 2006). "Outcome in patients with lung cancer invisible on chest roentgenograms but detected only by helical computed tomography.". Respirology 11 (5): 592-597. PMID 16916332.
  13. ^ Pickhardt PJ, Choi JR, Hwang I, Butler JA, Puckett ML, Hildebrandt HA, Wong RK, Nugent PA, Mysliwiec PA, Schindler WR. (Mar 2003). "Computed tomographic virtual colonoscopy to screen for colorectal neoplasia in asymptomatic adults.". New England Journal of Medicine 349 (23): 2191 - 2200. PMID 14657426.
  14. ^ Lauenstein TC, Semelka RC. (August 2006). "Emerging techniques: Whole-body screening and staging with MRI.". J Magn Reson Imaging 24 (3): 489-498. PMID 16888774.

'"/>


(Date:8/23/2014)... The report “Polycarbonate Resin Market by ... 2018” defines and segments the global polycarbonate resin ... revenue and consumption. It also identifies driving and ... with analysis of trends, opportunities, burning issues, winning ... revenues are forecasted on the basis of major ...
(Date:8/23/2014)... According to the new research report, "Electronic Adhesives ... Regional Trends & Forecast to 2019," defines and ... and forecast of value individually. Along with this, ... applications and geography are also discussed in the ... 26 figures spread through 234 pages and in-depth ...
(Date:8/23/2014)... 2014 A team of New York researchers ... when preceded by surgery and delivered by an experienced team. ... study. Click here to read it now . ... cases of mesothelioma patients who underwent hemithoracic (one side ... to the shape of a tumor. Patients who had ...
(Date:8/23/2014)... NY (PRWEB) August 23, 2014 On ... reported on a data breach suffered by Community ... saw the compromise of 4.5 million records containing Personally ... security numbers. According to Mandiant, who was engaged to ... from an advanced group of cyber attackers based ...
(Date:8/23/2014)... 23, 2014 Professional kitchen employees, prospective ... aid in preparing for Food Safety Certification exams thanks ... by Dynamic Path. , Dynamic Path announced the release ... more than 200 review questions for culinary industry students ... to cover requirements of the ServSafe® Food Safety Certification, ...
Breaking Medicine News(10 mins):Health News:Polycarbonate Resin Market by Applications and Geography Projected to $18.3 Billion by 2018 - New Report by MarketsandMarkets 2Health News:Polycarbonate Resin Market by Applications and Geography Projected to $18.3 Billion by 2018 - New Report by MarketsandMarkets 3Health News:Polycarbonate Resin Market by Applications and Geography Projected to $18.3 Billion by 2018 - New Report by MarketsandMarkets 4Health News:Electronic Adhesives Market Poised to Reach $5.5 Billion by 2019 - New Report by MarketsandMarkets 2Health News:Electronic Adhesives Market Poised to Reach $5.5 Billion by 2019 - New Report by MarketsandMarkets 3Health News:New Study Links Hospital Experience and Prior Surgery with Mesothelioma Radiation Success, According to Surviving Mesothelioma 2Health News:This Time Prominent Hospital Group Falls Prey to Hackers Believed to be Based in China 2Health News:This Time Prominent Hospital Group Falls Prey to Hackers Believed to be Based in China 3Health News:This Time Prominent Hospital Group Falls Prey to Hackers Believed to be Based in China 4Health News:Food Handler Safety Certification Made Easy with Dynamic Path 2
... published a report on Tuesday, which states that the Dioxin, ... may not be quite as dangerous as once thought. ... the government would not know just how dangerous Dioxin really ... in which they assess the risks. ,It was ...
... The American Cancer Society has selected Indian ministry of ... Terry Awards for its "unrelenting stance on health promotion ... Welfare Anbumani Ramadoss will receive the award at a ... DC Friday, a ministry statement said. ,The ...
... in Dooars and Terai region of North Bengal due to ... months till yesterday. // ,Chief midical officer (health), ... reported in Dooars region of Jalpaiguri district, mainly in Alipurduar ... area., ,In the Terai region at Naxalbari, 12 persons ...
... eight new patents and two USFDA approvals for its new ... ,"In our latest safety syringe, the needle retracts ... shot so that it does not remain exposed after use. ... needle stick injuries," Poly Medicure Managing Director Himanshu Baid said ...
... United States (where Ariz., N.M., Colo. and Utah meet) will ... in 2005//, say scientists at Johns Hopkins University, the University ... that parts of southern Colo. and north-central N.M.--previously at low-risk ... risk in 2006. ,The study is among the ...
... you have trouble falling or staying asleep, you're not ... out of 10 Americans say they frequently// have problems ... cause for concern, says Henry Raroque, Jr., M.D., a ... at Baylor Regional Medical Center at Grapevine. ...
Cached Medicine News:Health News:Uncertainty Still Hangs Over The Safety Of Dioxin 2Health News:Increased Risk of Hantavirus Forecast for U.S. Southwest 2
Other medicine definitionOther Tags