BXMO EXAM STUDY GUIDE
American Science of Radiologic Technologists (ASRT) - Answers - world's oldest and
largest professional radiologic science organization
founded in Chicago in 1920
provides many services to its members: continuing education, a professional journal, a
newsletter guidelines and assistance for radiography educators, an annual national
meeting, etc.
American Registry of Radiologic Technologists (ARRT) - Answers - formed to establish
standards and examinations necessary to certify radiologic technologists
formed in 1922
publishes a code of ethics, rules of ethics, etc.
Joint Review Committee on Education in Radiologic Technology (JRCERT) - Answers -
national organization that formally conducts the accreditation of schools of radiologic
technology
formed in 1969
accredits 637 programs in the United States
angiography - Answers - imaging of blood vessels with the injection of special
compounds called contrast media
bone densitometry (BD)
BD x-ray machines are used to diagnose many diseases affecting the bones, including
osteoporosis - Answers - art and science of measuring the bone mineral content and
density of specific skeletal sites or the whole body
computed tomography (CT) - Answers - computerized x-ray system that provides axial
images (transverse "slices") of all parts of the body
fluoroscopy - Answers - real-time viewing of x-ray images in motion
magnetic resonance imaging (MRI) - Answers - computerized imaging system that uses
a powerful magnetic field and radio frequency pulses to produce images of all parts of
the body
, mammography - Answers - x-ray imaging of the breast using a special x-ray machine
nuclear machine (NM) - Answers - injection or ingestion of radioactive materials and
recording of their uptake in the body using a gamma camera
positron emission tomography (PET) - Answers - highly sophisticated computerized
form of nuclear machine imaging
radiation therapy (XRT) - Answers - treatment of malignant diseases using radiation
sonography - Answers - imaging of soft tissue structures using sound echoes
x-ray tube: made of pyrex glass; contains both the source of electrons and the target -
Answers - source of x-rays
primary radiation - Answers - radiation that leaves the x-ray tube and travels in air to the
patient
radiation field - Answers - squared area of the x-ray beam that strikes the patient and x-
ray table
central ray (CR)
note: the CR is important in positioning the patient because the point is used to align the
x-ray tube to the body part to be imaged - Answers - imaginary line in the center of the
x-ray beam and perpendicular to the long axis of the x-ray tube
image receptor (IR)
note: as the x-rays pass through the patient, some of them are absorbed by the patient
and others are not
anatomic structures that have a greater tissue density (mass), such as bone, will absorb
more radiation than less dense tissue, such as muscle
this results in a pattern of varying intensity in the x-ray beam that exits on the opposite
side of the patient - Answers - during a radiographic exposure, x-rays from the tube are
directed through the patient to the ______
remnant radiation - Answers - radiation that exits the opposite side of the patient to
expose the image receptor (IR)
latent image
American Science of Radiologic Technologists (ASRT) - Answers - world's oldest and
largest professional radiologic science organization
founded in Chicago in 1920
provides many services to its members: continuing education, a professional journal, a
newsletter guidelines and assistance for radiography educators, an annual national
meeting, etc.
American Registry of Radiologic Technologists (ARRT) - Answers - formed to establish
standards and examinations necessary to certify radiologic technologists
formed in 1922
publishes a code of ethics, rules of ethics, etc.
Joint Review Committee on Education in Radiologic Technology (JRCERT) - Answers -
national organization that formally conducts the accreditation of schools of radiologic
technology
formed in 1969
accredits 637 programs in the United States
angiography - Answers - imaging of blood vessels with the injection of special
compounds called contrast media
bone densitometry (BD)
BD x-ray machines are used to diagnose many diseases affecting the bones, including
osteoporosis - Answers - art and science of measuring the bone mineral content and
density of specific skeletal sites or the whole body
computed tomography (CT) - Answers - computerized x-ray system that provides axial
images (transverse "slices") of all parts of the body
fluoroscopy - Answers - real-time viewing of x-ray images in motion
magnetic resonance imaging (MRI) - Answers - computerized imaging system that uses
a powerful magnetic field and radio frequency pulses to produce images of all parts of
the body
, mammography - Answers - x-ray imaging of the breast using a special x-ray machine
nuclear machine (NM) - Answers - injection or ingestion of radioactive materials and
recording of their uptake in the body using a gamma camera
positron emission tomography (PET) - Answers - highly sophisticated computerized
form of nuclear machine imaging
radiation therapy (XRT) - Answers - treatment of malignant diseases using radiation
sonography - Answers - imaging of soft tissue structures using sound echoes
x-ray tube: made of pyrex glass; contains both the source of electrons and the target -
Answers - source of x-rays
primary radiation - Answers - radiation that leaves the x-ray tube and travels in air to the
patient
radiation field - Answers - squared area of the x-ray beam that strikes the patient and x-
ray table
central ray (CR)
note: the CR is important in positioning the patient because the point is used to align the
x-ray tube to the body part to be imaged - Answers - imaginary line in the center of the
x-ray beam and perpendicular to the long axis of the x-ray tube
image receptor (IR)
note: as the x-rays pass through the patient, some of them are absorbed by the patient
and others are not
anatomic structures that have a greater tissue density (mass), such as bone, will absorb
more radiation than less dense tissue, such as muscle
this results in a pattern of varying intensity in the x-ray beam that exits on the opposite
side of the patient - Answers - during a radiographic exposure, x-rays from the tube are
directed through the patient to the ______
remnant radiation - Answers - radiation that exits the opposite side of the patient to
expose the image receptor (IR)
latent image
