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CT colonography (virtual colonoscopy)

Polyps and cancers of the colon.

सामान्य स्वास्थ्य जानकारी — यह निदान नहीं है। आपात स्थिति में 102 पर कॉल करें। हमेशा योग्य स्वास्थ्यकर्मी से सलाह लें।

What it shows

Polyps and cancers of the colon.

Why it is done

Bowel cancer screening or when colonoscopy is not possible.

Preparation

Bowel preparation the day before, as instructed; a small tube in the rectum gently inflates the bowel.

Radiation & safety

Typical effective dose 5 to 8 mSv, similar to about 2 to 3 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.

How long it takes

15 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

परिणाम की व्याख्या के लिए डॉक्टर को दिखाएँ — अकेला परीक्षण निदान नहीं करता।

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सामान्य प्रश्न

CT colonography (virtual colonoscopy) क्यों किया जाता है?
Bowel cancer screening or when colonoscopy is not possible.

CT colonography (virtual colonoscopy) के लिए कैसे तैयारी करें?
Bowel preparation the day before, as instructed; a small tube in the rectum gently inflates the bowel.

CT colonography (virtual colonoscopy) गर्भावस्था में सुरक्षित है?
Typical effective dose 5 to 8 mSv, similar to about 2 to 3 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.

SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.

स्रोत: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

आपात — कॉल📞 102