Release date: 2007-12-20
A groundbreaking development in lung cancer detection has emerged with the creation of a rice-grain-sized CT scanner in the United States. This innovative device is capable of identifying tumors at an early stage when treatment is most effective, addressing a major limitation of traditional scanners that often produce unclear images. As a result, it significantly improves the chances of curing lung cancer. Remarkably, this advanced technology fits in the size of a single grain of rice.
According to a long-term study published in the New England Journal of Medicine on December 12, 88% of lung cancer patients survived for approximately 10 years after undergoing CT scans and subsequent surgery. In early-stage cases, patients diagnosed with cancer had a cure rate of around 70%. However, 85% of cancer cases are typically detected after the tumor has progressed, making treatment far more challenging.
Experts have widely praised this invention, noting that doctors can now better detect and understand tumors, giving them greater confidence in fighting what remains the leading cause of cancer-related deaths. While this new tool is only used when lung cancer symptoms are present and not for routine screening, some researchers emphasize the need for further studies before it becomes widely adopted. Concerns have been raised about the study's design, as it did not clearly show whether the scanner reduces mortality rates, since one group underwent scans while the other did not. Additionally, small findings from CT scans may lead to unnecessary anxiety and additional tests.
Despite these concerns, scientists remain optimistic about the potential of early cancer detection programs. “This is a great invention,†said Dr. Sagia, head of the Thoracic Oncology Research Program at the University of Chicago. “In the early days, breast imaging technology revolutionized breast cancer detection. Now, we believe that CT scanning can play a similar role in lung cancer.â€
Currently, 484 lung cancer cases have been treated using this technique, with 412 detected at an early stage before the tumor spread. These patients had an 88% survival rate after 10 years of surgery. Of those, 302 underwent surgery within a month of testing, achieving a 92% survival rate. The advancement of CT technology has evolved dramatically since the early 1990s, with image numbers increasing from 30 to 600, allowing for the detection of even smaller lesions. A specific radioactive scan now takes just 15 to 20 seconds, making it quick and efficient.
Screening technology has already helped reduce mortality in cancers like breast, cervical, and prostate, but early lung cancer detection has lagged behind. On one hand, early X-ray research has not yielded significant progress, and on the other, smoking remains a major risk factor. “For over 20 years, very little has been done for lung cancer, and it still remains the top cause of cancer deaths,†said Dr. Mike Angger, Ph.D., from the Fox Chase Cancer Center in Philadelphia. ——Shanghai Medical Device Industry Association
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