The skin sparing effect will be highest for

The inferior mediastinal lymph nodes are located 

The most diagnosed cancerous histopathology arising from the walls of the gastrointestinal tract is

A doctor prescribes a non-isocentric treatment to a patient’s thoracic spine on a linear accelerator that is calibrated to 100 cm.  The patient is being treated in an AP/PA set up, where the treatment dose is prescribed to the depth of the spine, which is 3.7 cm from the posterior aspect of the patient. The total dose prescribed is 4000 cGy for 10 fractions.  The portal size for the AP is 5 cm x 12 cm and the portal for the PA is 5.3 cm x 11.7 cm. The patient AP/PA separation is 23.1 cm.  What would be the equivalent square for the PA portal when calculating the monitor unit for this portal? 

The subcutaneous layer of the breast contains

Drugs are eliminated from the body through

The time over which a patient’s total dose is delivered is termed as

The tissue surrounding a tumor has a tolerance of 3000 cGy; the tumor has a lethal dose of approximately 3500 cGy. The tumor is considered to be:

A doctor prescribes a non-isocentric treatment to a patient’s thoracic spine on a linear accelerator that is calibrated to 100 cm.  The patient is being treated in an AP/PA set up, where the treatment dose is prescribed to the depth of the spine, which is 3.7 cm from the posterior aspect of the patient. The total dose prescribed is 4000 cGy for 10 fractions.  The portal size for the AP is 5 cm x 12 cm and the portal for the PA is 5.3 cm x 11.7 cm. The patient AP/PA separation is 23.1 cm.  What is the portal size at the prescribed depth for the PA portal? 

Which of the following radiation beam energies will result in more skin sparing?