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Should I Be Concerned About Potential Cancer Risk From Two Abdominal CT Scans Given The Radiation Doses I Received?
Hello, I am 28 years old and had an abdominal CT scan eight years ago, at the age of 20, without contrast, due to a kidney stone. At that time, I was shielded, but I don’t know how high the radiation dose was for that scan. Two weeks ago, I underwent another abdominal CT scan—this time with contrast and a delayed phase (CT Abdomen before contrast and CT Abdomen after contrast). The scan was performed using a modern Siemens device (SOMATOM go.Up), and the total radiation dose was between 8.19 and 9.28 mSv. However, I was not shielded during this scan. Now I am very worried that I might develop cancer years later because of these scans. Can you explain the matter to me scientifically so I can understand the extent of the effect these rays have on my body? Also, why do I find many people asking questions online and expressing their fear after undergoing CT scans? Thanks!
Thu, 3 Apr 2025
Hi,
As CT Scan uses ionizing radiation, which is thought to be a cause of increased risk for cancer particularly leukemia or thyroid cancer etc. However, a single exposure to CT scan does not pose much risk, if done properly. Also, though there may be a small increased risk of cancer, with CT scan, the risks vs benefits have to be analyzed in reference to a need for a proper diagnosis etc.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Satnarain Bansal, General & Family Physician
As CT Scan uses ionizing radiation, which is thought to be a cause of increased risk for cancer particularly leukemia or thyroid cancer etc. However, a single exposure to CT scan does not pose much risk, if done properly. Also, though there may be a small increased risk of cancer, with CT scan, the risks vs benefits have to be analyzed in reference to a need for a proper diagnosis etc.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Satnarain Bansal, General & Family Physician
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