This butterfly-shaped gland is located anterior to the trachea and lateral to the esophagus
What is Thyroid?
Acute dyspnea with right heart strain and absent color flow in a pulmonary artery branch on Doppler suggests this diagnosis

What is Pulmonary Embolism?
This cardiac ultrasound view displays the left ventricle, left atrium, right atrium, and right ventricle.

What is Apical 4 Chamber View?
Often represented by an acronym, this fundamental safety principle dictates that output power and exposure time should be kept to the minimum necessary to achieve a diagnostic image.
What is ALARA?
This organ is identified by a hypoechoic cortex surrounding an echogenic central sinus and demonstrates corticomedullary differentiation.

What is Kidney?
On ultrasound, this thyroid finding may appear hypoechoic with irregular margins and punctate echogenic foci, prompting further risk stratification.

What is Thyroid Nodule?
Characterized by the 'bird's beak' appearance of the supraspinatus tendon tapering onto the humerus, this transducer orientation aligns parallel to the muscle fibers."
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What is Long-Axis View?
(or Longitudinal view)
Increasing this setting allows visualization of deeper structures, but requires the machine to 'listen' longer, lowering the frame rate.
What is Depth?
This cardiac chamber’s systolic function is commonly estimated by visual assessment of wall thickening in the parasternal long-axis view.

What is Left Ventricle?
This pathology appears as echogenic intraluminal foci that cast posterior acoustic shadowing and demonstrate mobility with patient repositioning.

What is Gallstones?
This cardiac view is used to visualize the left ventricle and right ventricle.

What is Parasternal Short Axis View?
This artifact causes increased echogenicity deep to fluid-filled structures.

What is Posterior Acoustic Enhancement?
In trauma ultrasound, free fluid often accumulates between this organ and the left kidney, and its parenchyma should be less echogenic than the liver.

What is Spleen?
Ultrasound showing chamber collapse during diastole with impaired ventricular filling indicates this cause of obstructive shock.

What is Cardiac Tamponade?
From the standard Apical 4-Chamber window, rotating the transducer 60 to 90 degrees counter-clockwise eliminates the right heart chambers to reveal this view.

What is Apical 2 Chamber View?
These horizontal, equidistant reverberation artifacts repeat deep into the image and are a classic sign of air, indicating either a normal 'dry' lung or a pneumothorax.

What are A Lines?
This distinct echogenic line separates the Caudate Lobe from the Left Lobe of the liver and is the fibrous remnant of the fetal Ductus Venosus.

What is Ligamentum Venosum?
This pathology has diffuse bilateral B-lines across multiple lung zones with preserved left ventricular systolic function, no focal consolidation, and a collapsible inferior vena cava in a hypoxic patient.

What is Acute Respiratory Distress Syndrome?
Often described as looking like a 'candy cane,' this view is obtained by placing the transducer in the notch above the sternum to visualize the aortic arch.

What is Suprasternal Notch View?
When using M-Mode on the lungs, normal lung sliding produces a granular appearance below the pleural line, commonly referred to as this 'vacation-themed' sign.

What is Seashore Sign?