Chapter 2: Scanning planes and Scanning Methods

Transverse plane

"Across" The ultrasound beam is entering the body from either an anterior, posterior, or lateral direction

Curved array is usually used for

Abdominal, obstetric and gynecological imaging

Focal zone

An area at which the sound beam strikes the surface of a structure, affects the image

Coronal planes divides the body into unequal _________ and _________ sections

Anterior and posterior

AP represents

Anteroposterior dimension

Pressure

Applying the correct amount of pressure with the transducer can improve image quality

The anatomic area(s) not seen in a transverse plane

Are superior and inferior

Measure

Begin by scanning as perpendicular to the structure as possible for the truest representation of its size

The ____________ of the structure being imaged ultimately determines which transducer should be used

Depths

Coronal planes

Divide the body into unequal anterior and posterior sections

When scanning in a coronal plane, the ultrasound beam enters the body from

Either a right or left lateral direction

When scanning in a sagittal, the ultrasound beam enters the body from

Either an anterior or posterior dimensional

When scanning in a transverse plane, the ultrasound beam enters the body from

Either an anterior, posterior, right/left lateral direction

Endocavital array is usually used for

Endovaginal and endorectal

When scanning, every effort should be made to position the area(s) of interest in the transducer's ______________ to obtain the best image

Focal zone

How the structure of interest lies in the body Scanning planes are not often oblique (by very slightly twisting the transducer). The degree of the oblique is determined by _____________________.

How the structure of interest lies in the body

Sector array is usually used for

Intercostal scanning

Hockey stick array is usually used for

Intraoperative imaging

The anatomic area(s) not seen in a sagittal plane

Is lateral

What is the equation to find volume?

L X W X AP = Volume

L represents

Length

Sagittal plane is also known as

Long plane

Short axis

Plan for anteroposterior views and width measurements, which are taken at a structure.s widest margins

Sagittal planes divide the body into unequal _________ and _________ sections

Right and Left

Longitudinal views

Show a structures length and depth

Transverse planes divide the body into unequal ________ and _______ sections

Superior and Inferior

What is the lithotomy position?

Supine with knees and hips flexed Typically used for giving birth, papsmire, or trans vaginal

Angle of Incidence

The angle at which the sound beam strikes the surface of a structure, affects the image

The oblique scanning plane affords visualization of the _________________.

The greatest margins of structures

Positional Orientation

The transducer verifies the scanning plane

sagittal planes

The ultrasound beam is entering the body from either an anterior or posterior direction and the anatomic portion of body structures being visualized

3D array is usually used for

Three dimensional imaging

Tee array is usually used for

Transesophageal echocardiography

What is the knee-chest position?

Variation of prone; where the patient is face down on the bed with the head turned to one side. The chest, elbows, and knees rest on the bed, and the thighs are perpendicular to the bed. The lower legs rest flat on the bed.

W represents

Width

The anatomic area(s) not seen in a coronal plane

are anterior and posterior

The lower the frequency the ________ it goes

deeper

What is Dorsal recumbent position?

flat on back knees slightly separated and flexed feet flat on bed Typically used for vaginal/rectal exam

What is sitting semi-erect?

incompletely upright in bodily posture

What is the prone position?

lying face down

What is the supine position?

lying face up

What is the left lateral decubitus (LLD)?

lying on the left side

What is the right lateral decubitus (RLD)?

lying on the right side

Long axis

maximum length of a structure can be seen in any scanning plane depending on how that structure lies in the body

What is the left posterior oblique?

performed with the body rotated 30-45 degrees away from the midline

What is the right posterior oblique?

performed with the body rotated 30-45 degrees away from the midline

axial views

show a structure's width and depth

Liner array is usually used for

small or superficial structures and extremity Doppler

Scanning planes are ______ dimensional

two

What is sitting erect?

upright in bodily posture