Diamond-Based Sensor for Cancer Detection Offers Non-Toxic Alternative to Radioactive Tracers

Researchers at the University of Warwick have developed a handheld diamond-based sensor that can detect the spread of cancer by tracing tiny magnetic particles injected into the body. The device offers a non-toxic alternative to radioactive tracers and dyes currently used in hospitals, which can be challenging for doctors to access or trigger allergic reactions in some patients. The sensor is designed to identify the magnetic tracer fluid injected into a tumor, which travels through the body alongside cancer cells, revealing whether they have reached the lymph nodes.

Key Takeaways:

• The diamond-based sensor is a handheld device that can detect the spread of cancer by tracing tiny magnetic particles injected into the body.
• The device is non-toxic and does not rely on radioactive tracers, which can be challenging for doctors to access or trigger allergic reactions in some patients.
• The sensor is capable of detecting just one hundredth of the typical dose of magnetic tracer fluid, making it extremely sensitive.
• The device uses a compact structure, consisting of a diamond measuring only half a cubic millimeter alongside a small permanent magnet, which allows it to be used by hand in operating rooms.
• The breakthrough is made possible by nitrogen vacancy centers inside the diamond, which give the diamonds a lovely pink color and allow them to detect very small changes in the magnetic field.
• The technology could have uses beyond medicine, including in spacecraft and fusion power.
• The device could eventually be applied to various cancers, including lung, liver, colorectal, and oesophageal tumors.
• Clinicians involved in the project believe that the new diamond sensor could help avoid complications associated with traditional techniques, such as allergic reactions to blue dyes.

Statistics:

• The diamond-based sensor is capable of detecting just one hundredth of the typical dose of magnetic tracer fluid.
• The device has a sensor head that measures 10 millimeters across, making it small enough for endoscopic use and keyhole surgery.

Sources:

• University of Warwick, "New diamond-based sensor to detect cancer cells in keyhole surgery" (no date)
• Physical Review Applied, "Diamond-based sensor for cancer detection" (no date)
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