What is mono Isocentric?

What is mono Isocentric?

The mono isocentric technique decreases the dose in organs at risk, lung and heart, and allows the avoidance of the cold and the hot spots. The reduction of the execution time of the daily workload Linac was achieved. The reproducibility of positioning is precise and simple.

What is a half beam block?

Introduction: Single isocentre half-beam block (HBB) technique permits the avoidance of hot and cold spots. This technique is very useful in sparing the underlying ipsilateral lung and heart, if the left breast is treated.

How do you match the supraclavicular and tangential breast fields?

Among them, half-beam blocking is the most common approach in order to match the supraclavicular field and tangential breast fields. (5-8) In this approach, the supraclavicular and tangential breast fields are matched at the midplane of the radiation field.

What are the three-field techniques and their types?

Three-field techniques can be divided in monoisocentric and two-isocentric. Two-isocentric techniques can be further divided in full field and half field techniques. Monoisocentric techniques show certain great advantages over two-isocentric techniques.

Can a single isocenter technique be used to treat breast cancer?

Patients with breast cancer are often treated with radiation to the breast (or chest wall) and draining regional lymph nodes. This is typically performed with a three-field technique in which an anterior supraclavicular field is matched to opposed tangent fields. A single isocenter technique is not always possible.

What is a third oblique photon field used for in radiology?

For patients with higher risk of nodal metastasis, a third oblique photon field is used to irradiate the upper axillary and supraclavicular nodal regions. Avoiding a geometric gap or overlap of the three fields poses a substantial technical challenge in three-field treatment plan- ning.