Doses For Newer Topics

Question 1

Bone metastasis

Answer 1

800 / 1 or 2000 / 5

Question 2

Brain metastasis

Answer 2

Small limited (SRS) : 15, 18, or 24 / 1 fx
Larger or multiple mets: 18-30Gy in 3-5/fx

Question 3

Spinal cord compression

Answer 3

30/10 or 20/5

Question 4

Superior Vena Cava obstruction (SVCO)

Answer 4

20/5

Question 5

General palliative doses

Answer 5

3000 / 10
2000 / 5
1700 / 2 (2 weeks)
1000 in a single fraction
800 in a single fraction

Question 6

Kidney

Answer 6

30 / 10
Pre op: 30-48 Gy at 1.8 per fraction
Post op: 45 - 55 Gy at 1.8 per fraction
SABR / SBRT
< 5 cm: 26 Gy single
30-40 / 3-5 fractions

Question 7

Penile

Answer 7

Early stage brachy: 60 - 65 Gy to the surface , 50 Gy to the centre over 6-7 days
Advanced stage EBRT
50/20
66-70 / 7-8 weeks

Question 8

Testicular seminoma

Answer 8

Typical dose: 25-35 Gy , 1.5 Gy daily
Boost - 10 Gy

Question 9

Prostate cancer

Answer 9

LDR (brachy): 145 with 75 -100 seeds , iodine or palladium

External beam: 60/20 or 78/39

Recurrent salvage EBRT : 60 Gy

Question 10

Ovarian Cancer

Answer 10

WART: 22.5 / 25 + 15/15 to pelvis only

• can also do intrapersonal P-32 or chemo in select cases

Question 11

Cervical cancers

Answer 11

External beam: 45-50.4 Gy
Brachytherapy: used to deliver a dose of 85-90 Gy to the tumour
HDR brachy: 5.3-7.5 Gy per fraction for 5-8 fractions

Question 12

Endometrial

Answer 12

Pelvic: 45/25

Question 13

Vaginal

Answer 13

85 to the disease
EBRT
60-65 Gy is brachy not possible
45-50.4 Gy to nodes

Brachy used as a boost

Question 14

Vulvar

Answer 14

Definitive: 65 - 70 Gy with chemo delivered in 1.7-1.8 Fractions

Adjuvant: 45-50 Gy or more

Lymph nodes:
45-50 Gy for microscopic / suspicious nodes
53-63 Gy for large nodes or ENE