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Doctor insights on: Ct Scan Vs X Ray For Lung Cancer

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Would a lung ct scan without contrast show lung blebs?

Would a lung ct scan without contrast show lung blebs?

Mgt: The imaging study may be uploaded to an inbox consult for review. The CT study can demonstrate blebs. If you are a smoker, I would advise quitting. ...Read more

Dr. Barry Rosen
4,369 doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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Clear CT scan of chest. Worried about lung cancer. Two x rays and one CT clear. But the CT was without contrast & shoulder pain persists. Contrast?

Clear CT scan of chest.  Worried about lung cancer.  Two x rays and one CT clear.  But the CT was without contrast & shoulder pain persists. Contrast?

NO!: Lung cancer has been eliminated as a realistic diagnosis. Move on, be glad. There are rather more mundane causes for shoulder pain. See an orthopedic surgeon and find out what's going on with that shoulder. ...Read more

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How accurate is a ct scan for lung cancer?

How accurate is a ct scan for lung cancer?

CT Chest: has a high sensitivity for detecting lung cancer, approximately 95%, so CT will detect the vast majority of lung cancers. ...Read more

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Dx of lung nodules. Ct scans of chest two years. Had chestxr CT scan of chest 2012 2013 CT scan of chest pulm wants another im afraid it causes cancer?

Dx of lung nodules. Ct scans of chest two years. Had chestxr CT scan of chest 2012 2013 CT scan of chest pulm wants another im afraid it causes cancer?

Radiation from CT: This issue should be discussed with your pulmonary doctor and radiologist. There is some risk associated with the radiation from multiple ct scans. However, that risk is likely small compared to the risk of a nodule identified in the lung, and may not outway the risks of ct, in the long run. There should be a plan with a reasoned approach that minimizes the risk of ct that you can agree with. ...Read more

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Is a MRI better for lung cancer or a ct scan?

Is a MRI better for lung cancer or a ct scan?

CT scan: is the study of choice. MRI is generally not useful in evaluating the lungs for nodules/masses, due to relatively longer scan times, the breathing motion of the lungs creates an artifact that limits visualization. ...Read more

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How accurate is a ct scan for lung cancer and espohagal cancer?

How accurate is a ct scan for lung cancer and espohagal cancer?

Depending: on the technical factors of the scan, highly sensitive for detecting lung cancer, less so so for esophageal cancers. Small esophageal cancers may be undetectable on CT, endoscopy is the best way to evaluate for that possibility(also biopsy can be performed at the time of endoscopy). ...Read more

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Would you see an enlarged right heart on a chest CT scan without contrast and CT scan x ray?

Would you see an enlarged right heart on a chest CT scan without contrast and CT scan x ray?

Yes if greatly enlar: An enlarged heart can be seen on X-ray or CT scan especially if it is greatly enlarged. However, the cause for the enlargement is usually not apparent by those means. An echocardiogram (ultrasound) usually does a better job. sometimes more specialized tests are needed. However, if this is the 1st time that an enlarged heart was detected, it is best to get it confirmed & identify the cause. GL & TY ...Read more

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Lung tumor CT scan with or without contrast?

Lung tumor CT scan with or without contrast?

Either: I usually do them without so I don't expose the patient to the contrast, which can injure kidneys. However, if the tumor is close to the mediastinum, I usually do order it with contrast because it's often difficult to tell the various structures apart without it. It also helps to identify lymph nodes. ...Read more

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31 m - Is a bronchoscopy / chest Ct scan with contrast and Vq scan good enough to rule out lung cancer or lung problems ?

31 m - Is a bronchoscopy / chest Ct scan with contrast and Vq scan good enough to rule out lung cancer or lung problems ?

Lung eval: That is a very through evaluation and should be sufficient . You could see masses, tumors, emphysema, frbrrosis, note if abnormal cells, tell if there are emboli. Adding pulmonary function testing (PFTs) would assess the function i.e. tell if you have asthma . f/u/ w/ doc ...Read more

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What's difference between High HD Contrast CT scan vs Normal Chest CT with contrast evaluating interstitial lung markings?

What's difference between High HD Contrast CT scan vs Normal Chest CT with contrast evaluating interstitial lung markings?

Different chest CTs: High resolution chest CT usually with out intravenous contrast is used to define interstitial lung disease pattern, whether diffuse or localized process. CT of chest examination with contrast intravenously usually looking for tumors or metastases and acute infection in the lungs. ...Read more

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Can a CT scan diagnose endometrial cancer?

CT is: generally not used for diagnosis or staging of endometrial cancer, however endometrial can be detected on a contrast enhanced scan. Ultrasound is more useful for initial imaging, and if additional imaging is necessary, MRI is superior to CT. ...Read more

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Would a double contrast chest CT scan and a chest X-ray rule out fibrosis?

Would a double contrast chest CT scan and a chest X-ray rule out fibrosis?

Not the best test: A high resolution CT chest would be the best study to evaluate fibrotic lung disease. ...Read more

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Had several x rays and CT scans this year . Maybe 7 cts and 14 x rays . Is this deadly?

Not deadly: It's not deadly but you should make your doctors aware of all the radiation you've recieved. The bigger question is why so many cts? Are they all really necessary? ...Read more

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Would advanced colon cancer show up on a CT scan of my abdomen ? Reg CT scan not virtual colonoscopy.

Would advanced colon cancer show up on a CT scan of my abdomen ? Reg CT scan not virtual colonoscopy.

Imaging/biopsy: The imaging modality of ct scan could show findings that would be concerning for cancer, mass around your colon, enlarged lymph nodes in the same area. However, the diagnosis is made at biopsy, a piece of the mass under the microscope of a pathologist. Often the ct scan leads to the biopsy. Good luck, it is important to get the evaluation completed. ...Read more

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What is CT scan usual result for lung cancer?

What is CT scan usual result for lung cancer?

Need biopsy.: A ct scan or chest x ray that is likely positive for lung cancer often shows a mass in the lung area, or by the mediastinum. It is likely rerported as a mass in the lung, suggesting malignancy, but it could be something else, like tuberculosis. So a biopsy of the mass is done to definitively determine what the mass is. ...Read more

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Whats better for diagnosing pancreatic cancer.... Ct scan or mri? I've had normal ultrasound and CT scan with contrast. Still worried.

Whats better for diagnosing pancreatic cancer.... Ct scan or mri? I've had normal ultrasound and CT scan with contrast. Still worried.

Why worried?: Why are you worried? Do you have symptoms or abnormal labs? If the ct was normal and used a specific pancreas protocol, then an MRI of the pan creas may be the best next test. Since it does not use radiation, there is little risk for you. ...Read more

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Which has more radiation: a bone scan or CT scan?

Which has more radiation: a bone scan or CT scan?

Sometimes same dose: Background radiation at sea level: 3 msv per year, denver residents get: 6 msv per year, cross country flight: 0.02 msv, x ray chest: 0.06 msv, ct head: 3 msv, ct chest: 5 msv (equivalent to 100 chest xrays) ct abdomen: 5-10, average bone scan 6.5 msv. Radiation depends on size of patient." radiation affects growing body in children more than adults. Doses to children are much less. ...Read more

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Chest CT with contract vs caradic ct? Will the chest CT show blockages?

Chest CT with contract vs caradic ct? Will the chest CT show blockages?

No: Chest CT with contrast will not show blockages in the coronary arteries. Cardiac CT is specialized for evaluation of the blood supply to the heart. ...Read more

Lung (Definition)

Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more


Dr. M. Hytham Beck
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Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more