Which of the following techniques can improve the quality of radiographic images?

Using a higher kilovoltage peak (kVp) can significantly improve the quality of radiographic images. This technique enhances the penetrating power of the x-ray beam, which allows it to pass through dense tissues more effectively. As a result, you can achieve better image contrast and reduced radiation dose to the patient. Higher kVp settings lead to greater x-ray photon energy, which not only improves penetration but also reduces the number of scattered photons that contribute to image fogging, ultimately resulting in clearer and more detailed images.

While other methods, such as adjusting film speed, may also impact image quality, their effects do not match the improvements achieved through a higher kVp. For instance, increasing patient thickness generally degrades image quality by requiring more exposure to penetrate the tissues adequately. Similarly, reducing the source-to-image distance can lead to image distortion and magnification issues, negatively affecting clarity. These factors reinforce why using a higher kVp is often the preferred approach for enhancing radiographic image quality.