**Core Concept**
Neuroendocrine tumors (NETs) are neoplasms that arise from cells of the endocrine and nervous systems. The detection of NETs often involves imaging techniques that can identify the tumor's location and characteristics. **Somatostatin receptors** are commonly expressed on the surface of NET cells.

**Why the Correct Answer is Right**
The correct answer is related to the use of **Somatostatin Receptor Scintigraphy (SRS)**, which exploits the presence of somatostatin receptors on NET cells. This technique, also known as Octreotide scanning, uses radiolabeled octreotide to bind to somatostatin receptors, allowing for the visualization of NETs.

**Why Each Wrong Option is Incorrect**
**Option A:** Is incorrect because while CT scans can detect larger NETs, they may not identify smaller tumors or those with minimal anatomical disruption.
**Option B:** Is incorrect as MRI, although useful for detailing tumor anatomy, does not specifically target NET cells.
**Option D:** Is incorrect because, although PET scans can be useful in detecting metabolically active tumors, they are not the most specific method for detecting NETs.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that **Somatostatin Receptor Scintigraphy (SRS)** is highly sensitive and specific for detecting NETs, especially those expressing somatostatin receptors. This method is particularly useful for identifying primary tumors and metastases.

**Correct Answer:** D. Somatostatin Receptor Scintigraphy.