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Doctor insights on: Would A Ct Scan Of The Head Still Be Valid After Seven Months

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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


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What happens if you had a head contusion over a year ago should you still get a CT scan?

What happens if you had a head contusion over a year ago should you still get a CT scan?

If you hit: your head over a year ago, and have been having no symptoms, you probably don't need a CT. If you have symptoms, see your doc for an evaluation. ...Read more

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Hit my head hard the other day. CT scan was negative;still have a headache 5 days later and don't quite feel like myself. Should I be worried?

Hit my head hard the other day. CT scan was negative;still have a headache 5 days later and don't quite feel like myself. Should I be worried?

Post concussion: Post concussion syndrome can be associated with persistent headache, dizziness, irritability, sleep problems and cognitive changes. The degree of symptomology depends on the extent of the original injury, and in the case of athletes, the number of prior injuries. Pain medications, anti-depressants, cognitive therapy can be helpful. It important to avoid re-injury, ...Read more

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Slipped and hit head against the end of a table 3 days ago. I'm on Xarelto. CT scan that day was ok. Head still hurts and swollen. Should I be worried?

Slipped and hit head against the end of a table 3 days ago. I'm on Xarelto. CT scan that day was ok. Head still hurts and swollen. Should I be worried?

Mgt: The pain may be related to soft tissue injury and swelling. If the pain is relieved with tylenol (acetaminophen) ( if you can take this medication), this is one cause. If the pain does not improve or is associated with any changes in balance, speech or vision, please see the ED again. ...Read more

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Had CT scan to check dissected carotid artery. Said it was gone but still i had pain one day on top of head. Why?

Had CT scan to check dissected carotid artery.  Said it was gone but still i had pain one day on top of head. Why?

Headaches: Your headaches could be coming from tension, eye strain, tooth grinding, dehydration, lack of sleep/poor sleep, skipping meals, stress, sleep apnea/snoring, or chronic sinus problems. ...Read more

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Does a head CT scan help diagnose multiple sclerosis? If a CT scan is normal, is it still likely that multiple sclerosis can be present?

Does a head CT scan help diagnose multiple sclerosis? If a CT scan is normal, is it still likely that multiple sclerosis can be present?

Takes time to show: "Multiple lesions over time and space" is how med students learn about MS. It evolves over time. Sometimes subtle MRI findings can suggest it, but are non-specific ("unidentified bright objects"). But it can take a long time before MS presents itself. If seriously concerned, see a neurologist. ...Read more

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Dr. Michael Korona
1,787 doctors shared insights

Ct Scan (Definition)

Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more