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The Hot Quadrate Sign on a Ventilation-Perfusion (V/Q) Scan
Kabeer Masih1, Pokhraj P Suthar1, Sumeet Virmani1
1Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, Chicago, USA.
Cureus
|August 9, 2024
Summary
The hot quadrate sign, typically seen on CT angiograms, was unusually observed on a ventilation-perfusion scan. This finding occurred in a patient with chronic kidney disease and central venous occlusion.
Area of Science:
- Radiology
- Nuclear Medicine
- Vascular Imaging
Background:
- The hot quadrate sign is characterized by intense arterial enhancement in the hepatic quadrate lobe.
- It is commonly identified on CT angiograms in patients with central venous occlusion.
- Previous descriptions include focal uptake on technetium-99m sulfur colloid scans.
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