VTNE Diagnostic Imaging Techniques 3

Question 1

In fluoroscopy, the unit of patient radiation dose most commonly monitored in real time is:

Accepted Answer

Air kerma (Gy)

Answer

Air kerma measured in Gray (Gy) is the standard real-time dose metric in fluoroscopy, often tracked at the reference point to estimate patient skin dose.

Question 2

Which MRI sequence produces images where fluid appears bright (hyperintense)?

Accepted Answer

T2-weighted

Answer

On T2-weighted sequences, fluids have long T2 relaxation times and therefore appear bright, making them useful for detecting edema, effusions, and CSF.

Question 3

A cat presents with suspected hypertrophic cardiomyopathy. Which echocardiographic measurement is MOST important to obtain?

Accepted Answer

Left ventricular free wall thickness in diastole

Answer

HCM is diagnosed by increased left ventricular wall thickness (≥6 mm in diastole in cats) measured in the absence of other causes of hypertrophy.

Question 4

What is the purpose of using a grid in radiography?

Accepted Answer

To reduce scatter radiation reaching the image receptor

Answer

A grid consists of lead strips that absorb scattered radiation produced in the patient, improving image contrast by reducing the scatter fog reaching the detector.

Question 5

During abdominal ultrasound, the spleen of a dog appears diffusely hyperechoic compared to the liver. This finding is MOST consistent with:

Accepted Answer

Nodular hyperplasia or diffuse infiltrative disease

Answer

A diffusely hyperechoic spleen relative to the liver is abnormal and most often associated with nodular hyperplasia, extramedullary hematopoiesis, or infiltrative neoplasia.

VTNE - Veterinary Technician National Examination Practice Test

VTNE - Veterinary Technician National Examination Practice Test

VTNE Diagnostic Imaging Techniques 3