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WorksheetsImaging Modalities Review Test-2
Total questions: 50
Worksheet time: 25mins
Fluoroscopy utilizes what to visualize anatomic structures in real-time?
High-frequency sound waves
Live x-rays
Strong magnetic fields
Radioactive tracers
Fluoroscopy is best utilized for static images, not for depicting motion or active physical properties.
True
False
What is the common name for the mobile fluoroscopy machine, often positioned by an OT, used in orthopedics?
C-Arm
X-Ray Table
MRI Scanner
Ultrasound Machine
Which of the following is a primary role of an Orthopaedic Technician (OT) during a fluoroscopy procedure?
Activating the x-ray beam
Injecting the contrast dye
Holding a limb to assist with fracture reduction
Interpreting the live images
The x-ray beam in fluoroscopy is activated by the radiologist performing the procedure, not the OT.
True
False
What does "CT" in CT Scan stand for?
Coronal Tomography
Contrast Tomography
Computed Tomography
Cranial Tomography
A CT scan uses high-strength magnetic fields and radio waves to create its images.
True
False
The cross-sectional images, or "slices," produced by a CT scan are called ______ images.
tomographic
radiographic
sonographic
photographic
A CT scan is particularly useful for imaging which of the following, producing more detail than a conventional x-ray?
Minor soft tissue strains
Complex bone fractures
Fetal development
Blood flow velocity
A CT scan is great for seeing complex, shattered, or hidden fractures that a regular X-ray might miss.
True
False
To create a 3D image, a CT computer digitally ______ the successive slices together.
"stacks"
"blends"
"excites"
"resonates"
What type of radiation, which has the potential to cause biological effects in living tissue, is used by CT scans?
Ionizing
Ultraviolet
Microwave
Sound
When interpreting a CT scan, the examiner should picture him/herself standing at the patient's head looking toward their feet.
True
False
An oral contrast agent, such as a ______-based compound, is used for imaging the digestive system in CT.
Gadolinium
Iodine
Barium
Saline
An intravenous (IV) contrast agent used to illuminate blood vessels in a CT scan is typically based on what element?
Iodine
Calcium
Iron
Potassium
What does "MRI" in MRI Scan stand for?
Medical Radiography Imaging
Magnetic Resonance Imaging
Molecular Resonance Imaging
Medical Resonance Imaging
MRI is the imaging modality of choice when frequent imaging is required because it does not use ionizing radiation.
True
False
MRI technology is based on exciting and detecting the rotational axis of what particles found in water?
Protons
Electrons
Neutrons
Photons
MRI scanners are particularly well-suited to image hard, non-bony parts or soft tissues of the body.
True
False
What is a common challenge for patients during an MRI scan, related to being inside the machine for long periods?
Claustrophobia
Nausea from contrast dye
Hearing loss
Increased appetite
Which of the following is a critical contraindication, making it unsafe for a patient to enter the MRI room?
A skin rash
Claustrophobia
A pacemaker
A broken bone
As an OT, you must ensure a patient is completely clear of all loose metal, like keys, coins, and phones, before they enter the MRI room.
True
False
The intravenous contrast agent used for MRI to increase the speed at which protons realign often contains the element _______.
Gadolinium
Iodine
Barium
Iron
Which MRI weighting is considered "Good for Anatomy" where fat is bright and fluid is dark?
T1-Weighted
T2-Weighted
Proton-Density
FLAIR
Which MRI weighting is considered "Good for Pathology" where fluid and swelling appear bright?
T1-Weighted
T2-Weighted
Coronal
Sagittal
On a T1-weighted image, fluid (like CSF or swelling) appears bright white.
True
False
On a T2-weighted image, doctors look for injuries and inflammation, which typically appear bright.
True
False
What type of energy does a medical ultrasound use to create images?
Ionizing radiation
Magnetic fields
High-frequency sound waves
Gamma rays
Diagnostic ultrasound is generally regarded as safe specifically because it does not produce ionizing radiation.
True
False
The ultrasound probe that produces and receives sound waves is called a _______.
transducer
oscilloscope
amplifier
detector
Ultrasound is the best imaging modality for clearly visualizing bones or air-filled tissues like the lungs in adults.
True
False
In orthopedics, ultrasound is excellent for all of the following except:
Viewing rotator cuff tears
Guiding injections into a joint
Checking for fluid (effusion) in a joint
Visualizing complex, shattered bone fractures
What term describes the "bouncing back" of sound waves off tissues, which the ultrasound machine captures to create a picture?
Echo
Absorption
Diffusion
Transmission
What type of functional ultrasound is used to measure and visualize blood flow, velocity, and direction?
Anatomic ultrasound
Therapeutic ultrasound
Doppler ultrasound
SPECT ultrasound
The sound wave frequencies used in diagnostic ultrasound are above the threshold of human hearing.
True
False
The two main categories of medical ultrasound are diagnostic and _______.
therapeutic
surgical
preventive
nutritional
In orthopedics, ultrasound is excellent for viewing soft tissues like ligaments and _______.
tendons
bones
cartilage
nerves
Nuclear radiology is different from other modalities because it primarily shows the _____ in the tissue, not just the structure or anatomy.
density
water content
activity
echogenicity
A bone scan uses a tiny, safe amount of a radioactive tracer to identify areas where the body is quickly trying to repair bone.
True
False
The radioactive tracers used in nuclear medicine scans are also called _____
radiopharmaceuticals
antibiotics
antivirals
analgesics
antifungals
What type of nuclear scan uses gamma cameras mounted on a rotating gantry to create cross-sectional images?
PET
SPECT
MRI
Arthrography
Orthopedists may order a skeletal scan (bone scan) to find stress fractures that are not clearly visible on conventional x-rays.
True
False
A PET scan, which is used to detect cancer and its spread, typically uses a radiolabeled form of what substance?
Iodine
Gadolinium
Barium
Glucose
Cancer cells show greatly decreased utilization of glucose, which is why they appear dark on a PET scan.
True
False
An arthrogram is an image of the inside of what structure?
A blood vessel
A joint
The spinal cord
The brain
An arthrogram is performed by injecting contrast medium directly into the joint cavity.
True
False
(One Word) Name one imaging modality that can be used to guide the needle into the correct position during an arthrogram.
Fluoroscopy (OR CT OR Ultrasound)
X-ray without contrast
PET scan
Mammography
Draining fluid from the joint, or ______, is typically performed before the arthrogram if an infection is suspected.
aspiration
injection
reduction
irrigation
A suspected infection in or overlying the joint is a contraindication to performing an arthrogram.
True
False
What is a crucial role for the OT after an arthrogram procedure?
Reading the final images for the doctor
Assisting with post-procedure immobilization (splint, cast, or brace)
Driving the patient home
Administering the local anesthetic
