What is the tumor lethal dose (TLD)?

The tumor lethal dose (TLD) refers specifically to the amount of radiation required to completely destroy a tumor. This concept is critical in the field of radiation oncology and dosimetry because it helps determine the optimal treatment plan for patients with cancer.

Understanding the TLD allows medical professionals to distinguish between doses that might reduce tumor size significantly and those necessary to achieve complete eradication of the malignant cells. A dose that achieves this level of destruction is essential for ensuring that the tumor does not rebound or develop resistance to treatment, which can occur with sub-lethal doses.

This concept emphasizes the importance of carefully calculating radiation doses to ensure effective treatment while minimizing damage to surrounding healthy tissues. Overall, the tumor lethal dose is a key parameter in achieving successful outcomes in radiation therapy.