Owais Crawford
Airport body scanners use radio waves to detect solid masses on the surface area of a person's body and/or in their clothing. While airport scanners cannot detect skin diseases or cancer, they have been known to detect large cysts or masses that protrude from the body or appear as solid masses on the scan. In rare cases, airport scanners have also been known to detect desmoplastic melanomas. However, it is important to note that airport scanners are not sensitive or specific enough to be used as a recommended screening tool for cancer or other diseases.
| Characteristics | Values |
|---|---|
| Can airport scanners detect tumors? | No, airport scanners cannot detect tumors. |
| Can airport scanners detect any health issues? | Airport scanners can detect solid masses on the surface area of a person's body and/or in their clothing. In some cases, they have detected skin cysts and melanomas. |
| Can airport scanners be used for medical purposes? | While airport scanners cannot be used for medical purposes, the technology has been used for skin irregularity detection in a medical setting. |
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What You'll Learn
Airport scanners use radio waves, not X-rays
Airport scanners use a combination of technologies to ensure the safety of passengers and staff. While X-ray machines are used to scan luggage, some body scanners use radio waves, not X-rays, to screen individuals. Radio waves are a form of non-ionizing radiation that does not penetrate the skin. These radio waves are similar to those we encounter in everyday life, such as those from cell phones, and the exposure from a body scanner is comparable to a brief phone call.
While airport X-ray machines emit low levels of ionizing radiation, the dose is not considered harmful. These machines use very low-energy X-rays that are reflected back to the machine itself. The amount of radiation received from a single scan is equivalent to the cosmic radiation experienced during two minutes of flight. Additionally, passengers have the option to request a pat-down search instead of walking through X-ray or millimeter wave screening devices.
The health impact of ionizing radiation is typically observed only at high doses. Although approximately half of airport scanners emit ionizing radiation, the dose is significantly lower than that of medical X-rays. For example, a chest X-ray exposes patients to about 1,000 times more radiation than an airport scanner. The Health Physics Society estimates that airport X-ray scanners deliver only 0.1 microsieverts of radiation per scan.
It is important to note that airport scanners are not designed to detect skin diseases or irregularities, and their radiation levels are carefully monitored and regulated to ensure the safety of all individuals involved. While the technology has been adapted for medical use, where it can detect skin abnormalities, its application in airports is focused on security rather than health screening.
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Scanners can detect solid masses
Airport scanners are designed to detect solid masses on the surface area of a person's body and/or in their clothing. If a large cyst or mass appears to stick up from the skin or body outline, or looks like a solid mass compared to the area around it, the scanner may reflect that. Dr. Mahadevappa Mahesh, a radiology and public health researcher at Johns Hopkins University in Baltimore, explains that there is no data on how many travelers may experience such incidents, but it is suspected to be a rare situation.
While smaller cysts typically do not confuse airport scanners, travelers with larger cysts or masses may be flagged for additional screening. Dr. David Brenner, a radiology researcher at Columbia University Medical Center in New York, recommends that individuals with large external skin lesions under their clothes obtain a doctor's note before traveling, as they may still be subjected to a pat-down.
It is important to note that airport scanners do not use X-rays but instead rely on radio frequencies to detect suspicious items. This technology is similar to radio waves and does not penetrate the skin. However, in a medical setting, this technology has been used to detect irregularities in the skin, such as melanomas.
In rare cases, airport scanners have detected nodular melanomas on travelers. For example, a frequently traveling businessman had his nodular melanoma detected by airport full-body scanners, which repeatedly singled out an area on his left lower leg for a pat-down. After a dermatological examination and surgical excision, the man traveled without further incidents. While full-body scanning is not currently sensitive or specific enough to become a recommended screening tool, it could serve as an incidental free screening for suspicious nodular lesions that warrant further investigation by a dermatologist.
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Scanners have been known to detect melanomas
Airport scanners generally detect solid masses on the surface area of a person's body and/or in their clothing. While smaller cysts typically do not confuse airport scanners, larger cysts or masses that protrude from the skin or body outline are more likely to be flagged. This is because they appear as solid masses compared to the surrounding area. It is important to note that the machines used in airports are different from those used in medical settings, which can detect irregularities in the skin.
In rare cases, travellers with large cysts or hernias may be flagged for invasive security screening to look for explosives. This is because large cysts or masses can appear similar to suspicious items on scanner images. To avoid confusion with security protocols, individuals with large external skin lesions are advised to obtain a doctor's note before travelling, as they may still be subjected to a pat-down.
While airport scanners are not primarily designed to detect skin diseases or tumours, their ability to identify solid masses and irregularities on the body surface can occasionally lead to the detection of melanomas or other skin conditions. However, it is important to recognise that airport scanners are not a substitute for medical diagnostic tools, and individuals with concerns about their health should seek appropriate medical advice and screening.
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Scanners do not penetrate the skin
Airport body scanners use radio waves, which, unlike X-rays, do not penetrate the skin. Radio waves are similar to the RF radiation emitted by cell phones. The RF exposure from a body scanner is comparable to that of a short cellphone call. While airport scanners can detect solid masses on the surface area of a person's body or their clothing, they do not have the capability to detect what lies beneath the skin.
Although airport scanners cannot detect tumors under the skin, they have been known to flag individuals with large cysts or masses that protrude above the skin or the body outline. In such cases, the scanner may indicate these areas for further inspection, such as a pat-down. Dr. David Brenner, a radiology researcher at Columbia University Medical Center in New York, suggests that individuals with large external skin lesions under their clothes obtain a doctor's note before traveling, as they may still be subjected to a pat-down.
It is important to note that while airport scanners cannot see beneath the skin, they have been used to detect skin irregularities in rare cases. For example, a case study published in PubMed reported that a frequently traveling businessman's nodular melanoma was detected by airport full-body scanners. Over 20 flights in 2 months, the scanners consistently singled out an area on his left lower leg for a pat-down. This prompted a dermatologic examination, which led to the discovery and surgical excision of a nodular melanoma.
While this case suggests that airport scanners may have the potential to detect some skin abnormalities, it is not enough to recommend them as a standard screening tool for skin conditions or tumors. The current technology used in airport scanners is not sensitive or specific enough for this purpose. Therefore, while airport scanners can detect some surface-level irregularities, they do not have the capability to see beneath the skin and detect tumors or other internal abnormalities.
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Scanners can detect radioactive material
It is unclear whether airport body scanners can detect tumours. However, it is important to note that these scanners use technology similar to radio waves, which do not penetrate the skin. While the machines used at airports are not designed to detect skin diseases, similar technology has been used for that purpose in medical settings.
Scanners can, however, detect radioactive material. Radiation detection devices can identify radioactive material by measuring the energy released by radioactive decays or disintegrations. These devices are used in preventive radiological nuclear detection (PRND) to identify radioactive material outside of regulatory control. This is often a government or NRC/Regulatory role.
In the medical field, nuclear medicine employs radioactive tracers to detect and diagnose various conditions, including cancer. SPECT imaging instruments, for example, produce three-dimensional images of the distribution of radioactive tracer molecules in the body. These tracers are made up of carrier molecules bonded to a radioactive atom and are typically administered intravenously, but can also be administered through inhalation, oral ingestion, or direct injection into an organ. SPECT scans are primarily used to diagnose and track the progression of heart disease but can also detect disorders in bones, gallbladder disease, intestinal bleeding, and more.
PET scans are another type of nuclear medicine imaging that uses radiopharmaceuticals to create three-dimensional images. The main difference between SPECT and PET scans is the type of radiotracer used. While SPECT scans measure gamma rays, PET scans detect the annihilation of electrons and positrons in the body, which produces photons. These photons are then measured by the PET scanner to create images of internal organs. The primary use of PET scans is to detect cancer, monitor its progression, and detect metastases.
Additionally, personal dosimeters can be worn on the outer layer of personal protective equipment (PPE) to monitor radiation exposure. These devices provide real-time readings of radiation levels and are particularly important when working in close proximity to radiation sources, such as during the removal of radioactive shrapnel. Portal monitors are another detection system used to monitor individuals, vehicles, and cargo for radioactive contamination to prevent the spread of contamination to clean areas.
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Frequently asked questions
Airport scanners generally show solid masses on the surface area of a person's body and/or in their clothing. Scanners use radio frequencies to detect suspicious items on travelers, and while smaller cysts shouldn't confuse airport scanners, larger cysts or masses that stick up above the skin or body outline may be flagged.
If you have a large external skin lesion located under your clothes, it is recommended to get a doctor's note before traveling. Although it is rare, travelers with large cysts have been flagged for additional screening.
Airport scanners do not detect skin diseases or cancer. However, the technology has been used for that purpose in a medical setting, where it can detect irregularities in the skin.
There is a reported case of a businessman whose nodular melanoma was detected by airport full-body scanners. For about 20 flights over 2 months, the scanners singled out an area on his left lower leg for a pat-down. After a dermatological examination and surgical excision, the man traveled without incident.
