根據一項最新研究的結果：吸煙者接受小劑量胸部螺旋CT掃描篩查肺癌，如果多次發現異常病變的話，比較容易戒煙。

這項研究結果發表在2005年5月15日《癌癥》期刊上，顯示接受一次或者多次CT掃描的吸煙者發現異常病變的話，更加有可能停止吸煙，并在三年的時間內保持戒煙。因為多達70％的接受篩查患者報告說他們打算戒煙，許多臨床醫生對使用CT檢查結果做為勸說吸煙者戒煙的良機十分感興趣。較早期的研究已經證明：近期診斷發現有醫學病變的吸煙者停止吸煙的興趣更大，也更為成功。

美國Mayo診所的研究人員，監測了926例基礎吸煙者以及594例前吸煙者，他們接受了連續三年胸部螺旋CT掃描檢查。結果發現：吸煙者出現異常檢查次數越多，停止吸煙并在該項研究三年內不再吸煙的可能性越大。在第三此隨訪之后，42％有三次異常檢查結果的基礎吸煙者不再吸煙，而有二次異常結果的吸煙者是28％，一次或者沒有異常檢查結果的分別是24％和20％。在基礎吸煙者中能夠增加戒煙的影響因子是：年紀較大、CT檢查異常之前的時間、以及基礎肺功能下降。

作者在論文中總結說：“多次肺部CT掃描能夠增強初級和二級預防努力的結果，使用肺部CT掃描進行篩查，能夠增強醫療保健提供者的互動，增加對罹患癌癥危險的認識、加強戒煙的效果。”

Abnormal CT May Help Smokers Quit
 
Smokers who receive multiple abnormal findings with low-dose, spiral chest computed tomography (CT) scans to screen for lung cancer are more apt to quit, according to a new study.

The study, which was published in the May 15, 2005, issue of the journal Cancer, showed that smokers who receive one or more abnormal CT scans are increasingly likely to stop smoking and remain abstinent from smoking over three years. Because up to 70% of smokers who undergo screening reported that they want to quit, many clinicians have been interested in using CT scan findings as an opportunity to inspire smokers to quit. Earlier studies have demonstrated smokers recently diagnosed with medical problems are more interested, and successful at, stopping.

Researchers at the Mayo Clinic (Rochester, MN, USA; www.mayo.edu), monitored 926 baseline smokers and 594 former smokers who received three consecutive annual spiral chest CT scans. They discovered that the more abnormal scans the smokers received, the more likely they were to stop smoking and remain smoke-free at the end of three years. After the third follow-up visit, 42% of baseline smokers who had three abnormal scans were smoke-free, compared to 28% who had two abnormal scans, and 24% and 20% who had one or no abnormal scans, respectively. Factors that added to smoking cessation among baseline smokers were older age, previous year abnormal CT scan, and decreased baseline pulmonary function.

The authors concluded in their article, “multiple lung CT scans may enhance primary and secondary prevention efforts by potentially providing increased interaction with health care providers, increased cognitions about one’s own cancer risk, and reinforcement for smoking abstinence with lung CT scan screening.”