A lung scan can be called either a ventilation scan or a perfusion scan, depending on what aspect of the lungs is being examined.
Types of Lung Scans
Lung scans are imaging tests used to assess different functions of the lungs. There are two primary types:
- Ventilation Scan: This type of scan examines how well air is moving in and out of the lungs. It particularly focuses on air movement through the bronchi and bronchioles.
- Purpose: To evaluate airflow and identify any blockages or restrictions.
- Example: Can help diagnose conditions like emphysema or asthma.
- Perfusion Scan: This type of scan focuses on blood flow within the lungs.
- Purpose: To identify areas with reduced or absent blood flow, which can indicate conditions such as pulmonary embolism.
- Example: Can help diagnose blood clots in the lung.
Summary Table
| Scan Type | What It Measures | Primary Focus |
|---|---|---|
| Ventilation Scan | Air movement in and out of lungs | Airways (bronchi and bronchioles) |
| Perfusion Scan | Blood flow within the lungs | Blood vessels and blood flow patterns |
Therefore, the term "lung scan" is a general term, and the specific type, either ventilation or perfusion, depends on what the doctor is investigating.
