When To Do CT Screening For Lung Cancer?

CT screening for lung cancer can be an important part of preventive healthcare for individuals who meet recommended screening criteria. Low-dose computed tomography (LDCT) lung cancer screening is recommended annually by the U.S. Preventive Services Task Force (USPSTF) for adults aged 50 to 80 who have a 20 pack-year smoking history and currently smoke or quit within the past 15 years [1]. Screening is intended for people without symptoms. If you experience symptoms such as a persistent cough, coughing up blood, chest pain, or unexplained weight loss, contact your doctor for a diagnostic evaluation rather than waiting for a screening scan. Lung cancer may be more treatable when identified at an early stage. Since screening with a low-dose CT scan can help identify certain lung abnormalities before symptoms develop, it may be an important consideration for eligible individuals. When to undergo screening depends on your age, smoking history, and individual health circumstances. This blog takes you step by step through everything you should know about how the procedure is performed and what your findings may mean in simple terms.

When should you consider getting a CT screening for lung cancer?

You may want to consider CT screening for lung cancer, particularly a low-dose CT scan, if you belong to a group of individuals at increased risk of developing the disease or meet established screening criteria.

The most widely recognized guideline is from the U.S. Preventive Services Task Force (USPSTF), which recommends annual screening for individuals who meet the following criteria [1]

• You are aged 50-80 years.
• You have a major smoking history (usually 20 pack-years or more)
• You have smoked or stopped smoking in the last 15 years.

You should also speak with a doctor if you do not meet the standard screening guidelines but experience persistent symptoms, including a chronic cough, unexplained weight loss, chest pain, or shortness of breath. Although these symptoms do not necessarily indicate lung cancer, they may require further medical evaluation. Screening eligibility and diagnostic testing are different, and people experiencing symptoms should not rely on a screening examination alone.

CT screening is intended to identify possible signs of lung cancer before symptoms develop. Detecting lung cancer at an earlier stage may provide more treatment options, although screening does not guarantee early diagnosis or a particular treatment outcome [1][2].

ViaScan of Las Colinas, located in Irving, Texas, offers CT scanning services using advanced imaging technology. Individuals interested in lung screening can contact the facility to learn about available services, eligibility requirements, and appointment details.

What is the duration that a CT scan takes for lung cancer?

A CT scan for lung cancer screening is generally a quick and straightforward procedure. The actual imaging process takes only a short time for most patients, although the total appointment duration can vary depending on the facility and individual circumstances.

Real Scan Time 

The actual scan usually takes only a few minutes. However, the overall visit, including check-in, preparation, and imaging, may take approximately 30 to 60 minutes, depending on the facility. Standard low-dose CT lung cancer screening does not require contrast dye, which can make preparation simpler than for some other types of CT examinations [2].

What Happens During the Procedure

• You come and check-in and fill in any necessary paperwork or health history forms.
• You put on a gown when necessary and get rid of any metal pieces such as jewelry.
• You are lying on the CT scanner table, which moves slowly through the machine when imaging.
• A technologist will instruct you on a few breath-holding techniques – usually holding your breath 5-10 seconds when taking pictures.
• The table passes through the scanner and X-ray images are taken in various positions.
• The scan is finished and you are clear to go – it does not take any time to recover and you can go about regular life at once.

What Do You Need to Do to have a CT Lung Cancer Screening?

Preparing for a lung cancer screening is generally simple and does not involve much inconvenience. In most cases, a low-dose CT scan for lung cancer screening does not require sedation, contrast dye, or major dietary restrictions. However, preparation instructions may vary depending on the imaging facility and your individual circumstances [2].

Pre-Scan Instructions and Restrictions.

• Wear loose, non-metal and underwire-free clothes. You might be requested to switch to a gown and in that case, light clothes ease the process.
• Take off jewelry, piercings, and metal accessories before coming to the appointment, since the metal objects disrupt the quality of CT imaging and have to be removed before the scans.
• Also, make the imaging center aware of any recent illnesses, surgeries, or major shifts in your health condition prior to your appointment as this may be pertinent to your interpretation of results.
• Always take any particular instructions you have been given by your ordering physician or the imaging center directly because each individual preparation may differ by a few details depending on the protocols used by the facility and your own health history.

What is the Time to Results of a Lung Cancer CT Screening?

One of the most common questions patients ask after undergoing a CT scan for lung cancer screening is how long it will take to receive their results. The reporting timeline can vary depending on the imaging facility, radiologist availability, and the complexity of the findings.

Result Processing Timeline

Many imaging facilities aim to provide low-dose CT lung screening reports within one to two business days after the examination, although actual turnaround times vary. Some facilities may provide results sooner, while others may require additional time. Depending on the facility’s process, results may be shared through your physician, a patient portal, or directly by the imaging center.

Review of Results and sharing.

• A board-certified radiologist interprets the images of your CT scans to provide accurate results that can help your health provider to detect any abnormalities in lungs.
• A radiologist will issue a formal written report of all findings, such as the size, location, and character of any nodules or abnormalities found.
• The report is forwarded to you, which you can consult with your physician, who interprets the results in relation to your entire medical history.
• Your doctor calls you to talk about findings and next actions required – either regular annual check-ups or further testing.

Findings are documented according to the reporting procedures used by the facility. It is important to share the results with your primary care provider so that any recommended follow-up can be discussed and arranged.

What do the Results of your Lung Cancer CT Screening Mean to your health?

Receiving your CT scan results for lung cancer screening can be an emotional experience. However, understanding what the findings may indicate can help put the results into perspective before discussing them with your physician. It is important to remember that an abnormal finding does not automatically mean that you have lung cancer.

Normal vs. Abnormal Findings.

• Normal results: A normal result generally means that no suspicious lung nodules or other significant abnormalities were identified during the examination. Although this can be reassuring, it does not completely rule out lung cancer. If you continue to meet the recommended eligibility criteria, annual screening should generally continue as advised by your healthcare provider. Lung cancer screening is designed as a recurring process rather than a one-time examination [1][2].
• Abnormal results: Many abnormalities detected during lung cancer screening are benign nodules, which are small spots in the lungs that do not necessarily indicate cancer. Depending on their size, appearance, and other relevant factors, your doctor may recommend additional imaging or a follow-up scan after a shorter interval to monitor any changes over time [2].

Follow-Up on the Results.

If your results are within the expected range, your doctor may recommend your next annual screening based on your current risk profile and screening eligibility. If lung nodules are detected, follow-up recommendations will depend on factors such as nodule size, appearance, and individual risk factors. Larger or suspicious nodules may require referral to a pulmonologist or additional diagnostic examinations.

Following the recommended steps after receiving your results is important. Even when a finding requires only monitoring, keeping up with the recommended follow-up schedule allows your healthcare team to assess any changes and determine whether additional evaluation is necessary.

What is the Cost of a CT Scan to Screen Lung Cancer?

Cost is an important consideration for many patients. Understanding the potential expenses associated with lung cancer screening can help you plan before booking an appointment.

Pricing With and Without Insurance.

Many insurance plans and Medicare cover low-dose CT lung cancer screening for individuals who meet their specific eligibility requirements. However, coverage criteria can differ from the USPSTF recommendations. For example, Medicare generally covers screening for eligible individuals aged 50 to 77, whereas the USPSTF recommendation extends to age 80 [1][3].

Before scheduling your examination, contact your insurance provider to confirm coverage, eligibility requirements, referral or order requirements, and any potential out-of-pocket expenses.

Factors which influence the cost.

• Status of insurance covers and whether your plan covers the scan as an eligible preventive service on current eligibility rules.
• The nature of the facility – the hospital based imaging centers normally charge higher than independent outpatient imaging providers to the same scan.
• Geographic location, since imaging prices differ greatly by the region and metropolitan areas throughout the nation.
• The need to include extra services like physician consultation, follow-up imaging or referrals to a specialist according to your findings.

Who Can Have CT Lung Cancer Screening and When?

Lung cancer screening is not recommended for everyone. Eligibility depends mainly on age, smoking history, and other applicable screening considerations. The U.S. Preventive Services Task Force provides established recommendations to help identify individuals who may benefit from annual screening [1]

Age, Risk Factors and Smoking History.

• The primary group recommended for annual low-dose CT lung cancer screening includes adults between 50 and 80 years old who have a significant smoking history, according to the USPSTF guidelines [1].
• A significant smoking history is generally defined as 20 pack-years or more. A pack-year is calculated by multiplying the average number of cigarette packs smoked per day by the number of years a person has smoked. For example, smoking one pack per day for 20 years or two packs per day for 10 years equals 20 pack-years [1].
• Individuals who currently smoke and meet the age and pack-year requirements should discuss annual lung cancer screening with their healthcare provider. A shared decision-making discussion can help them understand the potential benefits, limitations, and risks of screening before proceeding [1][2].
• Individuals who have quit smoking within the past 15 years may also meet the USPSTF eligibility requirements if they satisfy the age and pack-year criteria. Although quitting smoking reduces future lung cancer risk, it does not immediately eliminate the risk [1].

Recommended Screening Guidelines

• Low-dose CT lung cancer screening is recommended annually for eligible individuals rather than as a single examination. Consistent screening allows healthcare professionals to monitor changes in the lungs over time and identify abnormalities that may require further evaluation [1][2].
• According to the current USPSTF recommendation, eligible individuals should begin annual screening at age 50, provided they also meet the smoking history requirements. This recommendation lowered the starting age from 55 years and reduced the required smoking history from 30 to 20 pack-years compared with the previous USPSTF guideline [1].
• Screening should generally be discontinued when an individual reaches age 81, has not smoked for 15 years, or develops a health condition that substantially limits life expectancy or the ability or willingness to undergo lung cancer surgery, according to the USPSTF recommendation [1].
• Do not start or discontinue a screening program without discussing your circumstances with a qualified healthcare professional. General screening guidelines may not apply equally to everyone, and individual health conditions and risk factors should be considered when determining the appropriate screening schedule.

Conclusion

Taking a proactive approach to lung health can be particularly important for individuals with a history of smoking. ViaScan of Las Colinas, located in Irving, Texas, is a preventive imaging facility that offers CT scans and whole-body wellness scans to support greater awareness of personal health. These services are not a replacement for clinical diagnosis, physician-directed treatment decisions, or the medical care you already receive.

Discuss the suitability of CT lung cancer screening with your healthcare provider, particularly if you have a history of smoking or meet the recommended screening criteria. If you are considering preventive imaging, ViaScan offers low-dose CT scanning services with radiologist-reviewed results, helping you obtain additional information that you can discuss with your doctor.

Understanding your eligibility, following recommended screening intervals, and discussing your results with a qualified healthcare professional can help you make informed decisions about your lung health.

References

[1] U.S. Preventive Services Task Force (USPSTF). Lung Cancer: Screening. Recommendation Statement. https://www.uspreventiveservicestaskforce.org/uspstf/recommendation/lung-cancer-screening

[2] RadiologyInfo.org – American College of Radiology and Radiological Society of North America. Lung Cancer Screening. https://www.radiologyinfo.org/en/info/screening-lung 

[3] Medicare.gov. Lung Cancer Screenings. https://www.medicare.gov/coverage/lung-cancer-screenings

[4] American Cancer Society. Lung Cancer Screening Guidelines.https://www.cancer.org/health-care-professionals/american-cancer-society-prevention-early-detection-guidelines/lung-cancer-screening-guidelines.html