What is the definitive method of diagnosing pulmonary embolism ?
**Core Concept**
The diagnosis of pulmonary embolism (PE) involves various methods, but the definitive diagnosis is based on direct visualization of the **pulmonary arteries** and detection of the embolus. This is crucial for confirming the presence of a blood clot in the lungs. The definitive method provides a clear image of the pulmonary vasculature.
**Why the Correct Answer is Right**
The correct answer is based on the principle that direct visualization of the **pulmonary arteries** is necessary for a definitive diagnosis. This can be achieved through imaging techniques that provide detailed pictures of the lungs and their blood vessels.
**Why Each Wrong Option is Incorrect**
**Option A:** Is incorrect because it is not specified.
**Option B:** Is incorrect because it is not specified.
**Option C:** Is incorrect because it is not specified, however, pulmonary angiography is a key diagnostic method.
**Clinical Pearl / High-Yield Fact**
Pulmonary angiography is considered the gold standard for diagnosing PE, as it allows direct visualization of the pulmonary arteries and detection of emboli.
**Correct Answer:** D. Pulmonary Angiography.