perfusion lung scan, aerosol lung scan, radionucleotide ventilation lung scan, ventilation lung scan, xenon lung scan, ventilation/perfusion scanning (VPS), pulmonary scintiphotography, or, most commonly, V/Q scan

ventilation-perfusion lung scan (for detecting pulmonary embolism ed)

ventilation-perfusion lung scan (for detecting pulmonary embolism ed)

A V-P scan is a ventilation/perfusion scan. Sometimes it's called a V/Q scan as well. It is a radiology study to check how well air is getting into the lungs (ventilation) and how well blood is getting to the lungs (perfusion).