V/Q Scan
Nuclear medicine ventilation-perfusion study for PE workup.
What is V/Q?
Nuclear medicine ventilation-perfusion study for PE workup.
How it works: Refer to modality standard acquisition and reconstruction pipeline.
Advantages
- ✓Noninvasive or minimally invasive
- ✓Widely available in centers
- ✓Guides management
Limitations
- ⚠Limited by operator or motion
- ⚠May need contrast or prep
- ⚠Not perfect specificity
Preparation Checklist
0 of 3 completed
⚖️V/Q vs CT
Related Imaging Modalities
Combine with CT/MRI/US for complementary detail.
CT
CT scans use X-rays to create detailed cross-sectional images of the body. They are particularly useful for detecting bone fractures, tumors, and internal bleeding.
MRI
MRI uses powerful magnets and radio waves to produce detailed images of organs and soft tissues. Excellent for brain, spine, and joint imaging.
Ultrasound
Ultrasound uses sound waves to create real-time images. Commonly used for pregnancy monitoring and examining organs like the heart, liver, and kidneys.
Browse V/Q Terms
Explore common terms in V/Q reports, each with detailed explanations, clinical significance, and related lab tests to help you understand your imaging results. lab tests.
Chronic Thromboembolic Disease VQ Scan
Persistent perfusion defects that don't resolve after anticoagulation. May show mosaic perfusion pattern, wedge-shaped defects at clot sites, and evidence of pulmonary hypertension with enlarged central arteries.
Pulmonary Embolism VQ Scan
Ventilation-perfusion mismatch: areas with normal ventilation but absent or decreased perfusion indicate pulmonary embolism. Multiple segmental or larger perfusion defects with normal ventilation are diagnostic.
Pulmonary Hypertension VQ Scan
Patchy, non-segmental perfusion defects that don't match ventilation patterns. Chronic PE may show 'mosaic perfusion' with areas of both increased and decreased uptake. May see normal perfusion with enlarged central arteries.
Vq Scan Example 1
Representative finding for this modality.
Vq Scan Example 2
Representative finding for this modality.
Vq Scan Example 3
Representative finding for this modality.
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