30 Questions
Which type of bone is characterized by being dense and hard with an outside layer made up of osteons or haversian system?
Compact bone
What is the main function of osteoclasts in bone physiology?
Bone break (bone destruction and absorption)
What is the method of administration for Tc-99 MDP in a bone scan?
Intravenous injection
Which scan type provides a 360-degree 3D image by rotating around the patient?
SPECT scan
What is the most common clinical application for a 3-phase bone scan?
Detection of infection
What is the primary purpose of the osseous or delayed phase in a 3-phase bone scan?
Assessment of soft tissue infection
In a SPECT scan, what does a photopenic area indicate?
Lack of radioactive activity
What is the clinical application area specifically mentioned for SPECT scans?
Pelvis and hip region
What does the term 'Super Scan' imply in a medical context?
Lack of kidney visualization
In a bone scan, what is the purpose of drinking plenty of water after Tc-99 MDP injection?
Enhance kidney function
What is the purpose of instructing a patient having a bone scan to void frequently between the injection and delayed scanning?
To reduce radiation dose to the bladder
What is the function of osteoblasts and osteoclasts?
Osteoblasts - Build bone, Osteoclasts - Break bone
What is the metastatic lesion that might not be detected by a bone scan if it has no association with osteoblastic activity?
Osteolytic lesion
How many bones are there in the human skeleton?
206
Which type of exercise is beneficial for building muscle and bone?
Strength training
What is axial bone composed of?
Vertebrae, sternum, and ribs
What is the fluorine-18 analog of?
Hydroxyl ion
What is a nomogram typically used for?
Predicting disease prognosis
What is the correct function of osteoblasts in bone metabolism?
Promote new bone formation
What is the main reason for instructing a patient to drink liquids before a bone scan?
To dilute radioactive material in the body
What is the primary mechanism by which Tc-99m diphosphate compounds accumulate in bone?
Heterionic exchange
Which of the following best explains why body contour or elliptical orbits are advantageous over circular orbits in SPECT imaging?
They maximize spatial resolution
In prostate cancer patients, a low level of PSA correlates with a very low likelihood of bone metastasis, except for those who have undergone:
Hormonal therapy
In the provided images, what mode were the images acquired in?
The top part was static, and the bottom part was planar SPECT
What type of filter is best described as 'only allowing low frequencies to pass'?
Low-pass filter
In the context of bone tissue, what are the two main types?
Compact and sponge
What is the 'flare phenomenon' in the context of bone scans?
Increased osteoblastic activity within the first 3 months of chemotherapy, resulting in increased uptake at involved sites
How do osteomyelitis and cellulitis differ in their presentation on a three-phase bone scan?
Osteomyelitis shows focal uptake in all three phases, while cellulitis shows focal uptake only in the flow and blood-pool phases
In a multihole low-energy collimator, what configuration of holes produces higher resolution?
Longer and smaller holes
What technique is being described by the term 'equal-time imaging' in bone scanning?
Acquiring multiple individual spot views for an equal amount of time
Test your knowledge on the anatomy and physiology of bones, including the structure of the axial and appendicular skeleton, bone composition, and the cells involved in bone growth. Explore topics such as osteoprogenitors, osteoblasts, osteoclasts, and the types of bones.
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