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Ventilation-perfusion (V/Q) scan

Mismatched air and blood flow suggesting pulmonary embolism.

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

What it shows

Mismatched air and blood flow suggesting pulmonary embolism.

Why it is done

Suspected PE when CT contrast is unsuitable (for example in pregnancy).

Preparation

A small radioactive tracer is injected or swallowed. Preparation depends on the test; tell staff if pregnant or breastfeeding, as feeding may need a pause.

Radiation & safety

Typical effective dose 1 to 2 mSv, similar to about 4 to 8 months 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

about 1 hour. 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।

संबंधित स्थितियाँ

entry-health-condition-pe

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सामान्य प्रश्न

Ventilation-perfusion (V/Q) scan क्यों किया जाता है?
Suspected PE when CT contrast is unsuitable (for example in pregnancy).

Ventilation-perfusion (V/Q) scan के लिए कैसे तैयारी करें?
A small radioactive tracer is injected or swallowed. Preparation depends on the test; tell staff if pregnant or breastfeeding, as feeding may need a pause.

Ventilation-perfusion (V/Q) scan गर्भावस्था में सुरक्षित है?
Typical effective dose 1 to 2 mSv, similar to about 4 to 8 months 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