Echocardiogram Data Structures and Algorithms 2

Question 1

Which data structure is most appropriate for storing a sequence of Doppler velocity samples acquired over time in echocardiography?

Accepted Answer

Array or ring buffer

Answer

Arrays and ring buffers efficiently store ordered, time-indexed Doppler velocity samples and support fast sequential access.

Question 2

In DICOM echocardiography data, a tag is identified by a Group and Element number pair. What data structure best models the mapping from tag IDs to their values?

Accepted Answer

Hash map (dictionary)

Answer

A hash map provides O(1) average-case lookup when mapping DICOM tag (Group, Element) pairs to their corresponding values.

Question 3

When processing a cine loop of 100 echocardiographic frames for wall motion analysis, which algorithmic approach most efficiently detects the frame with peak systolic contraction?

Accepted Answer

Linear scan tracking maximum contraction metric

Answer

A single linear scan (O(n)) through all frames while tracking the maximum contraction metric is the most direct and efficient approach.

Question 4

An echocardiography system queues image reconstruction tasks so the oldest requested task is always processed first. Which data structure implements this behavior?

Accepted Answer

Queue (FIFO)

Answer

A FIFO queue ensures the oldest (first-in) task is processed first, matching the described scheduling behavior.

Question 5

3D echocardiographic volume rendering requires storing voxel adjacency information for surface extraction. Which data structure best represents this spatial graph?

Accepted Answer

Adjacency list

Answer

An adjacency list efficiently represents sparse spatial graphs where each voxel connects to only a small number of neighbors.

(Echocardiogram) Certified Echocardiogram Technician Practice Test

(Echocardiogram) Certified Echocardiogram Technician Practice Test

Echocardiogram Data Structures and Algorithms 2