It is estimated that your phone is filled with games like Angry Birds, Fruit Ninja, and other time-consuming apps, but have you ever heard of a mobile app that can detect cancer? A groundbreaking application has recently been developed by scientists abroad. Once installed, this app allows doctors to determine within 60 minutes whether a tumor is malignant or benign. No need to visit a hospital or wait in line—just use your own smartphone for a quick test and get the diagnosis.
We all know that when a tumor is suspected, oncologists don’t immediately remove it. Instead, they extract some cells using a thick needle for pathological analysis. Traditional methods, such as examining cell shape and protein staining, sometimes fail to provide clear results and can take days or even weeks. However, at Massachusetts General Hospital in Boston, a team led by Ralph Weissleder has developed a handheld magnetic resonance (DMR) diagnostic device. This technology can diagnose cancer in just an hour with high accuracy, offering a faster and less invasive alternative to surgery or biopsy. It significantly reduces patient discomfort and improves the speed of diagnosis.
So, what exactly is magnetic resonance?
From a scientific perspective, magnetic resonance works by using electromagnetic waves of a specific frequency to illuminate atomic nuclei in a magnetic field. When these nuclei experience magnetic resonance, they absorb energy from the electromagnetic waves and then emit their own signals. The frequencies at which different nuclei absorb and emit energy depend on their environment, allowing scientists to analyze the structure and density of substances based on these signals.
To put it more simply, think of a compass. The Earth’s magnetic field causes the compass needle to align northward, creating a natural resonance frequency. If you place an electromagnet near the compass and apply alternating current, the needle will vibrate. When the AC frequency matches the resonance frequency, the needle absorbs more energy, increasing its amplitude. DMR technology uses this principle to measure energy loss in samples placed in an alternating magnetic field.
Weissleder’s DMR system is the smallest cancer diagnostic tool in the world. Instead of using large superconducting magnets, it employs a compact permanent magnet measuring 8 cm in diameter and 5.5 cm in height. This magnet generates a 0.5 Tesla magnetic field over a 1.2 cm radius, which, while smaller than most MRI machines, is still 10,000 times stronger than Earth’s magnetic field.
Inside the DMR device, a microfluidic network, sample chamber, and microcoil work together. Biopsy samples are mixed with magnetic particle antibodies, and the microcoil applies an alternating magnetic field. The electronics include commercial components like microcontrollers, RF generators, and data acquisition units, all designed to fit into a small modular platform. The entire system is estimated to cost several thousand dollars.
How does it actually detect cancer?
The MGH team conducted experiments where they attached nanomagnetic particles to cancer-specific antibodies. When these labeled particles were mixed with a patient’s biopsy material, the antibodies bound to cancer cells, marking them. In tests involving 50 cancer patients, the DMR system correctly identified 48 out of 50 samples, demonstrating its high accuracy and potential for real-world application. This technology could revolutionize how we detect and treat cancer, making early diagnosis more accessible and efficient.
Mobile Surveillance Tower
A mobile surveillance light tower is a portable tower equipped with high-powered lights and surveillance cameras used for monitoring and securing outdoor areas. It is commonly used in construction sites, events, parking lots, and other locations that require temporary or mobile security measures.
The tower is typically mounted on a trailer or a vehicle, allowing it to be easily transported and set up in different locations as needed. The lights on the tower provide bright illumination, ensuring visibility and deterring potential intruders or criminals.
The surveillance cameras on the tower are usually equipped with advanced features such as night vision, motion detection, and remote access capabilities. These cameras capture high-quality video footage and can be monitored in real-time or recorded for later review. Some towers may also include additional security features like alarms, speakers, or two-way communication systems.
Mobile
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