MRI and Ultrasound

on MRCP fluid such as bile is hypo-intense while keeping everything else hyper-intense

if patient is worried about noise, provide them ear plugs, headphones or music

just because it's echogenic does not mean it has to exhibit shadowing

pt presents with left scrotal pain, what image would you order first?

mediastinum, heart, chest wall

Which is safe for an MRI

msk, breast, neuro

Is the MRI loud?

MRI of the lungs are useless

The long axis view on ultrasound is in what plane

Looking for Calcium

Basic Principles of MRI

veins are easily compressible unless there is a clot

if a sound source is stationary

what is contraindicated for using gadolinium?

The short axis view on ultrasound is in what plane

if something lacks water, it will appear _____ on MRI since it lacks protons

echogenic

What question does not need to be included in the history for an MRI?

since it uses gadolinium, MRA serves as a good alternative for pts who require CTA but have an allergy to iodine

no enhancement through transmission, diffuse internal echoes

no echo

How long does the MRI take?

Basic Principles of MRI

If the brain lesion has a blood supply, the administration of contrast will be

on a real-time grayscale, normal veins should ______ on compression

lungs

To characterize a liver lesion use

What therapeutic IR procedures can be performed combined with an ultrasound? multiple answers available

simple cyst is

fat, acute blood, protein, contrast, enhancement is BRIGHT

To detect a liver lesion use

fetal presentation, evaluate cervical, evaluate for complication

MRI of the MSK is good for detecting edema and ligamentous tears around joints

lungs

on a brain MRI, the cranial bone is

US evaluates for free fluid (blood) in the peritoneum, pleural space, and pericardium

liver, gallbladder, cystic bile duct and pancreas

documents intrauterine pregnancy number and location. Dates the pregnancy. Evaluates for ectopic pregnancy

Will I feel anything during the MRI?

invasive and requires sedation

FAST Exam

Will the MRI hurt?

biophysical profile is determined in

if a sound source is moving

What is the correct order in which you would choose diagnostic exams for breast tissue

Basics of Ultrasound

hemoperitoneum is blood (complex fluid with diffuse low level echoes) in lower pelvis

Liver MRI is indicated for lesion detection and lesion characterization to screen for hepatocellular carcinoma

Ultrasounds are characterized by a single definite plane

simple cyst is

scenarios in which MRI can be helpful (multiple answers possible)

Basics of Ultrasound

fetal anatomy, fetal size/growth/amniotic fluid volume, placental position

the magnet of the MRI is ALWAYS on

the biophysical profile is a test of fetal well-being. Observation for up to 30 minutes

MRCP is heavily ____ weighted

bones and brain

flowing blood is echoic while clots are anechoic since coagulated blood has a higher viscosity

What is contraindicated for an MRI? (multiple answers acceptable)

ultrasound can provide a 4 chamber view in the coronal plane

What is not included in the biophysical profile point system for assessing fetal well being?

Basics of Ultrasound

Modified MRI technique

MRI is the best test for detecting marrow replacement and infiltration: hypointense on T1 Weighted

First choice for diagnostic imaging of the abdomen and pelvis

gadolinium is only good for

enhanced through transmission, septations with blood, pus, thick wall and mural nodules

diagnostic and therapeutic

non-invasive but diagnostic only

typically when looking at an ultrasound image, where is the transducer

T1 is associated with

what color indicates blood flow towards the inducer on a doppler imaging

echo-poor

if patient is claustrophobic, communicate with tech, consider sedatives or open MRI

different shades of grey (different tissue types) using an MRI are easily distinguishable

simple cyst is

gallstones are _____ and exhibit shadowing

Basic Principles of MRI

if patient is allergic to IV contrast, its okay because there's no iodine and gadolinium allergy is rare

Fluid is bright

abdomen/pelvis

Can I wear headphones and listen to music?

cortical bone, air and fibrous tissue is DARK

The more intense the image, the ______

The MRI image is a display of the ____ emitted energy

Can I be given sedatives?