DIAGNOSTIC IMAGING NBCE PART 2
_____________ is the common benign bone tumor of the appendicular
skeleton. - CorreCt Answers -Osteochondroma
Myositis ossificans - CorreCt Answers -Calcification of the muscle belly
Most commonly seen in the biceps and in the quadriceps
From trauma
Most common location for abdominal aortic aneurysm - CorreCt Answers -
Distal to the renal arteries
Normal abdominal aorta measurement - CorreCt Answers -Up to 3.8 cm
>3.8= AAA
Radiographic signs for abdominal aortic aneurysm - CorreCt Answers -
Aortic dilation, curvilinear calcification, *fusiform appearance*
Special tests for abdominal aortic aneurysm - CorreCt Answers -Doppler
Diagnostic ultrasound
Ultrasonography
CT
Refer to vascular specialist
Cholelithiasis 4 Fs - CorreCt Answers -Fat, flatulent, female, fertile
,Cholelithiasis pain referral - CorreCt Answers -Inferior border of the right
scapula (viscerosomatic)
Tests for cholelithiasis - CorreCt Answers -Murphy's inspiratory arrest
Special test: ultrasound and cholecystogram
MC benign tumor in females - CorreCt Answers -Uterine fibroid
Fibroid cyst/leiomyoma (tumor of smooth muscle)
Calcified prostate - CorreCt Answers -Males >50 years old, urinary
problems
Labs for calcified prostate - CorreCt Answers -PSA
Acid phosphatase
Metastasis (MC lumbar spine: alkaline phosphatase)
Phleboliths - CorreCt Answers -Calcification within veins, asymptomatic
Fat pads (elbow) indicates - CorreCt Answers -A radial head fracture
seen on lateral view
_________ is better for bone and _______ is better for ST - CorreCt
Answers -CT; MRI
,CT Presents structures in different planes with equal clarity
Uses contrast and is 10X better than plain film
Visualizes occult fractures, bone fragment location, intra-articular
fractures, calcified soft tissue lesions, and brodie's abscess.
Traumatic lesions, pathology or anomalies
Measured in Hounsfield units
Uses for CT - CorreCt Answers -Anything in the lung
Discitis, osteomyelitis, brodies abscess
Aneurysms
Spina bifida's, spondylosis, spinal stenosis, lateral recess stenosis
Degenerative changes
MRI - CorreCt Answers -Provides optimal visualization of spatial
relationships and distinct soft tissue contrast to view: IVD, spinal cord,
meninges, bone, meniscus, ligaments
Shows soft tissue contrast 100x better than CT
No radiation dose, uses gadolinium, utilizes signal intensities, uses surface
coils
Best for multiple sclerosis for plaqueing in the brain and spinal cord
Best for all AVNs
T1 weighted MRI - CorreCt Answers -Fatty pathologies
, i.e muscular dystrophy
water=darker
T2 weighted MRI - CorreCt Answers -Water density
Osteochondroma can be ______________ or _______________. -
CorreCt Answers -Pedunculated (coat hanger exostosis/cauliflower like);
sessile
___________________ is multiple osteochondromas. - CorreCt
Answers -Hereditary multiple exostosis
*20% undergo malignancy*
Unicameral bone cyst are ______________ located in the
________________ or _______________. - CorreCt Answers -
centrally, Diaphysis/metaphysis
*cortex to cortex*
Age for unicameral bone cyst - CorreCt Answers -<20 years old
Fallen fragment sign is present in _____________ - CorreCt Answers -
UBC
Which bone tumor is fluid filled? - CorreCt Answers -unicameral bone cyst
_____________ is the common benign bone tumor of the appendicular
skeleton. - CorreCt Answers -Osteochondroma
Myositis ossificans - CorreCt Answers -Calcification of the muscle belly
Most commonly seen in the biceps and in the quadriceps
From trauma
Most common location for abdominal aortic aneurysm - CorreCt Answers -
Distal to the renal arteries
Normal abdominal aorta measurement - CorreCt Answers -Up to 3.8 cm
>3.8= AAA
Radiographic signs for abdominal aortic aneurysm - CorreCt Answers -
Aortic dilation, curvilinear calcification, *fusiform appearance*
Special tests for abdominal aortic aneurysm - CorreCt Answers -Doppler
Diagnostic ultrasound
Ultrasonography
CT
Refer to vascular specialist
Cholelithiasis 4 Fs - CorreCt Answers -Fat, flatulent, female, fertile
,Cholelithiasis pain referral - CorreCt Answers -Inferior border of the right
scapula (viscerosomatic)
Tests for cholelithiasis - CorreCt Answers -Murphy's inspiratory arrest
Special test: ultrasound and cholecystogram
MC benign tumor in females - CorreCt Answers -Uterine fibroid
Fibroid cyst/leiomyoma (tumor of smooth muscle)
Calcified prostate - CorreCt Answers -Males >50 years old, urinary
problems
Labs for calcified prostate - CorreCt Answers -PSA
Acid phosphatase
Metastasis (MC lumbar spine: alkaline phosphatase)
Phleboliths - CorreCt Answers -Calcification within veins, asymptomatic
Fat pads (elbow) indicates - CorreCt Answers -A radial head fracture
seen on lateral view
_________ is better for bone and _______ is better for ST - CorreCt
Answers -CT; MRI
,CT Presents structures in different planes with equal clarity
Uses contrast and is 10X better than plain film
Visualizes occult fractures, bone fragment location, intra-articular
fractures, calcified soft tissue lesions, and brodie's abscess.
Traumatic lesions, pathology or anomalies
Measured in Hounsfield units
Uses for CT - CorreCt Answers -Anything in the lung
Discitis, osteomyelitis, brodies abscess
Aneurysms
Spina bifida's, spondylosis, spinal stenosis, lateral recess stenosis
Degenerative changes
MRI - CorreCt Answers -Provides optimal visualization of spatial
relationships and distinct soft tissue contrast to view: IVD, spinal cord,
meninges, bone, meniscus, ligaments
Shows soft tissue contrast 100x better than CT
No radiation dose, uses gadolinium, utilizes signal intensities, uses surface
coils
Best for multiple sclerosis for plaqueing in the brain and spinal cord
Best for all AVNs
T1 weighted MRI - CorreCt Answers -Fatty pathologies
, i.e muscular dystrophy
water=darker
T2 weighted MRI - CorreCt Answers -Water density
Osteochondroma can be ______________ or _______________. -
CorreCt Answers -Pedunculated (coat hanger exostosis/cauliflower like);
sessile
___________________ is multiple osteochondromas. - CorreCt
Answers -Hereditary multiple exostosis
*20% undergo malignancy*
Unicameral bone cyst are ______________ located in the
________________ or _______________. - CorreCt Answers -
centrally, Diaphysis/metaphysis
*cortex to cortex*
Age for unicameral bone cyst - CorreCt Answers -<20 years old
Fallen fragment sign is present in _____________ - CorreCt Answers -
UBC
Which bone tumor is fluid filled? - CorreCt Answers -unicameral bone cyst
