Biologic Half life

time required for an organism to eliminate half of an administered dose of any substance through normal processes

Cyclotron

device for accelerating charged particles in a spiral fashion to high energies via an alternating electrical field.

Decay

spontaneous transmutation of a radionuclide that results in a decrease in the number of radioactive events in a sample.

Half life

time required for disintegration of half of the original activity of a radioactive nuclide.

Isotope

nuclides of the same element that have different atomic mass (neutrons) but the same atomic number (protons)

Scintillation

emission of light flashes from certain materials as a result of interaction with ionizing radiation.

Technetium 99m

common radionuclide of technetium used for 90% of nuclear medicine procedures.

What is the job responsibility of the Medical Physicist/Dosimetrist?

planning the treatment as prescribed by the radiation oncologist. Maintains and directs the QC and Quality assurance activities associated with the use of ionizing radiation.

What is the job responsibility of the Radiation Oncologist?

physician responsible for determining the treatment volume and dose of radiation that should be given to a patient. Medically manages the patients response to treatment.

What is the job responsibility of the Radiation Therapist?

accurate delivery and documentation of daily radiation treatments. Provides daily patient assessment, monitoring, and education.

stereostatic radiosurgery

uses multiple beams of radiation.

brachytherapy

Short term radiation therapy.

Acoustic Neuroma

widened internal auditory canal commonly found with MRI/CT

Ultrasound uses sound waves above:

1-20 Mhz, high frequency waves

What is B-Mode in Ultrasound?

two-dimensional image or frame made up of a series of dots Each dot represents varying shades of gray or "gray scale.

What is a Transducer?

device that contains specific types of crystals that undergo mechanical stress to produce an ultrasound wave.

A Transducer serves as both________and ________

transmitter and receiver

What is a Doppler in Ultrasound?

allows organs and vascular structures to be accurately mapped, measured, and imaged. Blood flow velocities to be assessed

What does PET stand for?

positron emission tomography

What does PET map techniques for?

intended to identify key motor and sensory regions of the brain.

What is a Cyclotron?

a device for accelerating charged particles in a spiral fashion to high energies via an alternating electrical field.

What is Coregistration?

combining of PET and CT data sets into a hybrid image.

PET tracers have a half life of

120 seconds to 110 minutes

Nuc Med is used to diagnosis esophageal reflux. T/F

True

What is a Radiopharmaceutical?

radioactive drugs used in the diagnosis and treatment of disease.

A Radiopharmaceutical is used in______.

Nuc Med

What is a FDG?

most common tracer, with a 110 minute half life that allows more location flexibility in elation to the production radiopharmacy.

What does a FDG measure?

glucose/metabolism ( measures whether normal function has returned following treatment)

What is Technetium 99-m?

most common radionuclide of technetium used for 90% of nuclear medicine procedures.

What is decay?

spontaneous transmutation of a radionuclide that results in a decrease in the number of radioactive events in a sample.

What is Sodium Iodide used for?

Thyroid uptake studies