Radiation Therapy registry review

TD 5/5 brachial plexus

60

TD 5/5 brain

45

TD 5/5 brain stem

50

TD 5/5 bladder

65

TD 5/5 cauda equina

60

TD 5/5 colon

45

TD 5/5 ear

30 -- acute serious otitis

55 -- chronic serious otitis

TD 5/5 esophagus

55

TD 5/5 eye lens

10

TD 5/5 femoral head and neck

52

TD 5/5 heart

40

TD 5/5 kidney

23

TD 5/5 larynx

45 -- laryngeal edema

70 -- cartilage necrosis

TD 5/5 liver

30

TD 5/5 lung

17.5

TD 5/5 optic chiasm

50

TD 5/5 optic nerve

50

TD 5/5 parotid

32

TD 5/5 retina

45

TD 5/5 rectum

60

TD 5/5 rib cage

50

TD 5/5 small intestine

40

TD 5/5 stomach

50

TD 5/5 TMJ and mandible

60

TD 5/5 thyroid

45

TD 5/5 spinal cord

47 for 20 cm

most common pathology for prostate

adenocarcinoma

lymph node drainage for prostate

periprostatic, obturator, external iliac, hypogastric, common iliac, para aortic

most common pathology for penis

well-differentiated squamous cell

most common pathology for bladder

transitional

most common pathology for testis

seminomas- classical

non seminomas- embryonal

most common pathology for kidney

renal cell (clear cell)

most common pathology for renal pelvis and ureters

transitional

lymph node drainage for bladder

internal iliac, external iliac, presacral

most common pathology for breast

infiltrative ductal carcinoma

most common pathology for esophagus

squamous cell carcinoma

most common pathology for pancreas

adenocarcinoma

most common pathology for gallbladder

adenocarcinoma

most common pathology for stomach

adenocarcinoma

lymph node drainage for pancreas

superior and inferior pancreaticoduodenal nodes, porta hepatis

most common pathology for soft tissue sarcomas

malignant fibrous histiocytoma (MFH)

most common pathology for soft tissue sarcomas IN PEDIATRICS

rhabdomyosarcoma

most common pathology for lung cancer

adenocarcinoma

location of pancoast tumors

apex of lung

location of malignant mesothelioma

pleural surfaces

location of adenocarcinoma in lung cancer

periphery of lung

location of squamous cell carcinoma in lung cancer

centrally located, usually around the bronchus

most common pathology for colorectal

adenocarcinoma

most common pathology for anal

squamous cell carcinoma

lymph node spread for anal

perirectal and anorectal

lymph node spread for rectum

perirectal

most common pathology for endocrine

thyroid

most common pathology for thyroid

papillary

lymph node spread for thyroid

internal jugular chain, Delphain node (anterior cervical), pretracheal, paratracheal

most common pathology for bone tumors

osteosarcoma

most common pathology for pediatric solid tumors

leukemia (followed by primary brain cancer)

most common pathology for pediatric brain tumors

gliomas which are classified as either high or low grade astrocytomas

most common location for gynecological cancers

endometrial

most common pathology for endometrial

adenocarcinoma

most common pathology for ovarian

epithelial

most common pathology for cervical

squamous cell carcinoma

most common pathology for vulva

squamous cell carcinoma

most common pathology for vagina

squamous cell carcinoma

lymph node drainage for gynecological

inguinals, internal and external iliac, para aortic

type of leukemia that uses bone marrow transplants as a form of treatment

CML

most common pathology for leukemia

AML

most common pathology for Hodgkins lymphoma

nodular sclerosing Hodgkins

most common pathology for non-hodgkins lymphoma

B cell

quality factor for x-rays, gamma rays, and beta particles

1

quality factor for alpha particles

20

quality factor for neutrons

10

1 rem = ___ Sv

0.01

1 rad = ___ rem

1

1 gray = ___ Sv

1

skin gap formula

(field size 1/2 x depth/SSD) + (field size 2/2 x depth/SSD)

Sterling's formula for equivalent square

4 * (area/perimeter)

Dmax for Co60

0.5 cm

Dmax for 4 MV

1.0 cm

Dmax for 6 MV

1.5 cm

Dmax for 10 MV

2 cm

relationship between PDD and field size

direct (PDD increases as field size increases)

relationship between PDD and energy

direct (as energy increases, PDD increases)

relationship between PDD and SSD

direct (as SSD increases, PDD increases)

relationship between PDD and depth (as the beam goes deeper into the patient)

inverse (as the beam goes deeper into the patient, PDD decreases)

Mayneord F equation

[(old SSD + d / old SSD + dmax) x (new SSD + dmax / new SSD + d)]^2

dose calculation factor used for rotational therapy

TAR

TAR is affected by

field size and energy

wedge angle formula

90- (hinge angle/2)

hinge angle formula

180 - (2*wedge angle)

MeV/4

90% depth dose line (therapeutic range)

MeV/3

80% depth dose line (therapeutic range)

MeV/2

50% depth dose line (practical range)

resting mass of an electron

511 KeV

absorbed dose measured in

Gy

1 Gy = 1 J/kg

exposure measured in

Roentgen

activity measured in

Becquerel

1 Bq = 1 disintegration/second

function of electron gun

produces electrons

function of magnetron/klystron

microwave/power source; provides power to accelerate electrons

function of waveguide

conveys microwave power

function of accelerating tube

microwave cavities that are energized by the magnetron or klystron, this is where electrons are accelerated