Multiple-Choice Question on Data Labeling in Medical Image Analysis

Multiple-Choice Question on Data Labeling in Medical Image Analysis (Level 3, Difficulty 2)

Consider the following question on data labeling techniques in medical image analysis:

Question: Which of the following data labeling methods is most appropriate for annotating abnormal regions of interest in medical images, such as detecting cancerous cells in magnetic resonance imaging (MRI) scans?

Options:

A. Bounding box annotation B. Pixel-level annotation C. Instance segmentation D. Semantic segmentation E. Anatomical landmark detection

Answer: C. Instance segmentation

Explanation: In this case, we are looking for a data labeling technique that can precisely annotate abnormal regions in medical images, such as cancerous cells in MRI scans. Among the given options:

• Bounding box annotation: This method only annotates the outer boundaries of the regions of interest. It is less accurate for small or complex shapes, such as cancerous cells, that may overlap with healthy tissue.
• Pixel-level annotation: This method annotates each pixel individually, making it suitable for small objects or complex shapes. However, it may be time-consuming and prone to error, especially in the case of overlapping objects.
• Instance segmentation: This technique is designed to accurately annotate all instances of a specific object (such as cancerous cells) in an image, including segmenting them from overlapping objects. This method is particularly suitable for medical image analysis because it can precisely separate abnormal cells from healthy tissue.
• Semantic segmentation: This method annotates entire classes of objects (e.g., cancerous cells, healthy tissue) within an image. While it can be useful for general medical image analysis, it may not be as accurate for annotating specific abnormal regions.
• Anatomical landmark detection: This technique annotates specific anatomical landmarks in the image. It may be valuable for some medical image analysis tasks, but it is not as suitable for annotating abnormal regions in medical images as instance segmentation.

Given the specific requirement of accurately annotating abnormal regions of interest in medical images, instance segmentation is the most appropriate method among the options provided.

Test your knowledge of data labeling techniques in medical image analysis with this multiple-choice question. Learn about annotating abnormal regions of interest, such as detecting cancerous cells in MRI scans, and understand the most appropriate data labeling method for this task.