HW #4

Question 1

Total time over which radiation treatment is delivered (protracted), including holidays and weekends.

Answer 1

Elapsed days

Question 2

Time over which total dose is to be delivered.

Answer 2

Protraction

Question 3

Daily dose of radiation given.

Answer 3

Fraction

Question 4

Regulates the growth of cells. aka “tumor-suppressor genes”.

Answer 4

Antioncogenes

Question 5

Normal genes that play a part in controlling normal growth and differentiation.

Answer 5

Proto-oncogenes

Question 6

Genes that regulate the development and growth of cancerous tissues. Implicated in the abnormal proliferation of cells.

Answer 6

Oncogenes

Question 7

The measure of ionization in air as a result of exposure to x-rays or gamma rays

Answer 7

Roentgen

Question 8

Measures the amount of energy absorbed.

Answer 8

Rad

Question 9

Rad was replaced by?

Answer 9

Gy

Question 10

1Gy = ?rads

Answer 10

100

Question 11

First measuring unit for the absorption of all types of ionizing radiation into tissue

Answer 11

Rad

Question 12

Measures occupational exposure.

Replaced by?

Answer 12

Rem

Sv

Question 13

Unit of output measure used for linear accelerators.

Answer 13

MU (monitor unit)

Question 14

1Sv = ?rem

Answer 14

100

Question 15

unit of activity, equal to 3.7 × 10^10 disintegrations per second (dps).

Answer 15

Ci

Question 16

lymph nodes that are the first to receive draining fluid from tumor in a specific anatomic and, therefore, the first to collect cancer cells.

Answer 16

setinel node