HCP EN V/Q Scan: The Preferred and Recommended Screening Test for CTEPH

This is a non-contrast lung CT scan showing both perfusion and ventilation using a mathematical algorithm. The FDA recently cleared the perfusion portion of the CT:QV software from 4D Medical. The technology has been compared in studies to both nuclear and spectral and contrast enhanced CT. #RSNA2025 | Radiology Business

Myocardial perfusion scan

Pathology Navigator on Instagram: "Save this, share this, and send it to your study buddy. A patient with sudden dyspnea + pleuritic chest pain after a long flight… what’s your first thought? Pulmonary embolism. Key PE cues to remember: Deep vein thrombosis source, tachycardia most common, ABG shows respiratory alkalosis + hypoxemia, and ventilation–perfusion mismatch → increased A–a gradient. Best tests: CT pulmonary angiography for high probability; D-dimer to rule out in low/intermediate prob