The application of tungsten wire light-emitting in incandescent light bulbs is primarily based on its high melting point and excellent thermal radiation properties. The following is a brief description of its specific applications and principles:

In a hospital imaging department, a patient lies on an examination table, about to undergo a CT scan. As the equipment activates, an invisible ray begins rotating around the patient’s body—this is the X-ray, capable of penetrating the body to clearly reveal internal structures, providing critical evidence for disease diagnosis. Behind these radiation applications, a key player operates quietly in the background: the tungsten alloy collimator. Though you may never have heard of it, it functions like a behind-the-scenes hero, influencing the effectiveness of radiation detection and treatment. Why is it entrusted with this responsibility, and what unique properties does it possess?

Tungsten wire has a wide range of uses. Its exceptional physical properties, such as its extremely high melting point (approximately 3422°C), excellent corrosion resistance, and good electrical conductivity, have led to its widespread application in industry, technology, and everyday life.

Radiotherapy equipment is a specialized medical device used for tumor radiation therapy, with its core function being the generation and delivery of high-energy rays (such as X-rays, gamma rays, electron beams, and proton beams) to damage the DNA structure of cancer cells, inhibiting their proliferation and thereby treating tumors. However, radiation is a double-edged sword—it can harm surrounding healthy tissues while targeting cancer cells. At this juncture, a seemingly inconspicuous yet highly critical component—the tungsten alloy collimator—plays a vital role. Acting like a "gatekeeper," it controls the direction and range of radiation, ensuring that rays target cancer cells as precisely as possible. So, what exactly is this tungsten alloy collimator, which plays a key role in radiotherapy, and how does it control radiation?