02.09 Diagnostic Radiology of the Coronary Arteries and Congenital Heart Disroders Flashcards
Normal CR ratio in adults
0.5 or less
Normal CR ratio in newborns
0.65 or less
Enlargement of the right atrial shadow
Right atrial convexity is more than 50% of the cardiovascular height
Right atrial enlargement
RV enlargement is better assessed in what view
Lateral view
Signs of LA enlargement in PA view
Widened carinal angle
Double density sign
Superior displacement of the left mainstem bronchus
Bulging in the retro-cardiac space
Upper posterior bump
LA enlargement in lateral view
Most common heart chamber enlargement
LV enlargement
In PA view, apex is displaced downwards while in lateral view, there is an obliteration of retro-cardiac space
LV enlargement
Positive Hoffman-Rigler sign (>1.8 cm)
LV enlargement
Standard diagnosis of coronary artery disease
Conventional coronary angiography
Test that uses treadmill bicycle exercise with ECG and blood pressure monitoring
Exercise stress test
Test that uses US imaging to show how well the heart muscle is working during stress
Stress echo
A nuclear medical examination of the heart muscle wherein the accumulation of the radioactively labeled substance is monitored with the blood flow
Stress nuclear scintigraphy
A test wherein gadolinium is injected into a vein while the patient is resting and again after the patient receives a medication that dilate arteries; the scanner then takes pictures of the gadolinium dye as it passes through the heart musclle
Stress MRI
A procedure that uses x-rays and contrast material to see how blood flows through the arteries of the heart
Coronary angiography
Most posterior of the chambers
LA
Median chambers
RA, LV
Most anterior of the chambers
RV
Technique used to locate the coronary arteries
Ring and loop technique
Separates the atria from the ventricles
Represents the AV groove
Ring
Divides the left and right ventricles
Represent the interventricular groove
Loop
Occupies the right AV groove and posterior IV groove
Right coronary artery
Occupies the left anterior IV sulcus
Left anterior descending artery
Occupies the left AV groove
Left circumflex artery
Aka sinus of valsalva
Widened portion of the aorta
Aortic sinus
From where the right coronary artery rsies
Right coronary cusp
From where the left main coronary artery arises
Left coronary cusp
Does not give off any coronary arteries
Non-coronary cusp
Branch that goes right into the myocardium along the anterolateral wall
Diagonals of LAD
Branch that perforates into the septum
Septal perforators of LAD
Sometimes called left intermediate artery, ramus medianus or arteries intermedia
Ramus intermedius
Only branch of LCX
Obtuse marginal
Supplies the pulmonary conus or right ventricular outflow track
Conus branch of RCA
Supplies the SA node located at the junction of the posterior wall of SVC and right atrium
Sinoatrial node branch of RCA
Supplies the acute margin of the heart or the anterior wall of the right ventricle
Acute marginal branches of RCA
Goes through the posterior IV groove
PDA
Supplies the undersurface of the heart, goes through the cardiac groove or crux from the AV node branch
Posterolateral ventricular branch
Supplies the AV node located near the crux
AV node branch
PDA and PLV arise from the RCA
Right dominant
PDA and PLV arise from the LCX
Left dominant
If the RCA gives off the PDA, and the left main coronary artery gives off the PLV
Co-dominant
Blood vessels are imaged after opacification by contrast medium
Measures pressure in the heart chambers
Conventional angiography
Used to evaluate if there is narrowing or a blockage in coronary arteries
CT angiography
Can be used to assess wall motion
Affected by dominance
Cardiac MRI
Supplies the anteroseptal and anterior of LV
LAD
Supplies inferior and inferoseptal wall of LV
RCA
Supplies anterolateral and inferolateral wall of LV
LCX
Method of examining the heart to obtain information about the blood supply to the heart muscle
Thallium scan
Increased pulmonary vascular markings Enlarged heart with right sided prominence Diminutive aorta Dilated main pulmonary arteries Can be asymptomatic
ASD
Increased pulmonary vascular markings
Enlarged heart with LV or biventricular prominence
Aorta is unremarkable or normal in size because there is no excess blood going to the aorta
Symptomatic (blue babies)
Dilated RV
VSD
Defect in both septa of the atrium and the ventricle
1 solid valve with 5-6 cusps
AV canal defect
Increased pulmonary vascular markings
Enlarged heart with biventricular prominence
Aorta is prominent
Machinery-like murmur
PDA
Normal vascularity
Cardiomegaly with left ventricular prominence
Figure of “3” sign
Rib notching
Coarctation of the aorta
Decreased pulmonary vascular markings
Normal or enlarged heart with right ventricular prominence
Pulmonary arteries are small
Aorta can be prominent (right-sided aortic arch)
ROF
Determines the degree of severity of TOF
Pulmonary artery stenosis
Boot-shaped heart
Concave pulmonary artery, uplifted heart
TOF
Increased vascularity
Cardiomegaly
Narrow vascular pedicle (egg on its side, apple on a stem)
TGA
Decreased vascularity
Cardiomegaly with bi-atrial and left ventricular prominence
Concave pulmonary artery segment
Tricuspid atreia
Increased vascularity
Cardiomegaly with either or both ventricular and left atrail prominence
Pulmonary venous congestion or edema (type I)
Concave main pulmonary artery
Wide mediastinum
Right sided aortic arch
PTA
Main pulmonary artery comes from the back of the trunk
PTA type I
No main PA but R and L pulmonary arteries come from the back of the trunk
PTA type II
R and L pulmonary arteries come from the side of the trunk
PTA types III
Decreased vascularity
Marked cardiomegaly
Right atrial prominence
Balloon-shaped or box-shaped heart
Ebstein’s anomaly
Increased vascularity
Cardiomegaly with right atrial and right ventricular prominence
Enlarged systemic veins (SCV and IVC)
TAPVR
Persistent left-sided vertical vein connects pulmonary venous confluence to the left innominate vein, right SVC or azygos vein
TAPVR Type I (Supra)
Snowman apperance
TAPVR Type I (Supra)
Connections to the right atrium or coronary sinus
Similar to ASD
Most common type of TAPVR
TAPVR Type II (Intra/Cardiac)
Connection is below the diaphragm, to the portal vein, ductus venosus, or hepatic vein
Pulmonary edema
Normal sized heart
Prominence of the right atrium and less often the right ventricle
TAPVR Type III (Infra)
Scimitar sign
TAPVR Type III (Infra)
Various connections to the right side of the heart
TAPVR Mixed type