CT Chest / Thorax Without Contrast

CT chest without contrast lung cancer screening is a low-dose imaging test that creates detailed pictures of your lungs—without dyes or injections. Cadabams Diagnostics uses advanced 128-slice CT scanners to detect early lung changes long before symptoms appear, giving you and your doctor the power to act early.

Definition

A CT chest without contrast lung cancer screening is a rapid, non-invasive scan that uses X-rays and computer processing to produce cross-sectional images of the chest. The test is done without contrast dye, making it ideal for routine screening.

• Scan time: 5–10 minutes
• Radiation dose: Up to 90 % lower than standard CT scans
• Image quality: High-resolution 3-D views of lung tissue, airways, and blood vessels

• Nodule size (measured in millimetres)
• Nodule density (solid, part-solid, or ground-glass)
• Location (upper vs. lower lobes, central vs. peripheral)
• Spiculation (irregular edges suggesting malignancy)
• Calcification patterns (benign vs. malignant)
• Lymph node enlargement
• Pleural effusion or thickening
• Airway wall thickness and bronchiectasis

• Early detection improves 5-year survival to >80 %
• Non-invasive alternative to biopsy for initial assessment
• Quick turnaround—reports within 2 hours at Cadabams
• Cost-effective compared to late-stage cancer treatment
• Peace of mind for high-risk individuals

Ideal candidates

• Adults aged 50–80 with a 20 pack-year smoking history
• Current smokers or those who quit within the last 15 years
• People exposed to second-hand smoke, asbestos, or radon
• Individuals with family history of lung cancer
• Anyone with persistent cough, chest pain, or unexplained weight loss

When to schedule

• Annual screening if you meet high-risk criteria
• Baseline scan before any respiratory surgery
• Follow-up after abnormal chest X-ray findings

• Detects tumours <5 mm—before symptoms arise
• Guides timely treatment—surgery, radiation, or targeted therapy
• Monitors existing nodules for growth or stability
• Reduces lung-cancer mortality by 20–24 % in high-risk groups
• No contrast reactions—safe for kidney disease or iodine allergies

• Lung cancer (small-cell and non-small-cell)
• Pulmonary metastases from other cancers
• Chronic obstructive pulmonary disease (COPD)
• Pulmonary fibrosis and interstitial lung disease
• Pneumonia or tuberculosis
• Pulmonary embolism (when blood clots travel to lungs)
• Bronchiectasis and airway abnormalities

Day before

• Eat normally; no fasting required
• Remove all metal jewellery and underwired bras
• Inform the centre if you are or might be pregnant

On arrival

• Change into a cotton gown provided by Cadabams
• Complete a brief questionnaire about symptoms and smoking history
• Store valuables in secure lockers

• Doctor’s referral (not mandatory but recommended)
• Valid ID and previous imaging reports if any
• Fasting not needed—eat light meals
• No contrast allergy screening required

• Morning slots (8 am–12 pm) for shorter wait times
• Post-holiday periods to avoid rush
• Anniversary of quit date for former smokers
• After flu season (March–April) to reduce respiratory infection interference

1. Check-in at Cadabams Diagnostics reception—5 min
2. Change clothes and remove metal objects—5 min
3. Lie on CT table—arms above head, 2–3 positionings—2 min
4. Hold breath for 5–10 seconds while table moves—30 sec
5. Radiographer review for motion artefacts—2 min
6. Dress and collect report—online link sent within 2 hours

• Pregnancy test if you suspect pregnancy
• Inform technician about claustrophobia or back pain
• Avoid caffeine 2 hours prior if anxious—it raises heart rate
• Bring a companion if you need help changing clothes

Minimal risks

• Low radiation exposure—equivalent to 6 months of natural background radiation
• False positives—small nodules may appear; most are benign
• Overdiagnosis risk—some slow-growing cancers may never cause harm

How Cadabams mitigates risk

• Low-dose protocols tailored to body size
• Dual-radiologist review to reduce false positives
• Clear follow-up guidelines provided with every report