Final answer:
For a Parkinson's patient with prior motion during scans, utilizing motion reduction techniques and selecting the appropriate scanning modality such as an fMRI or a PET scan are vital. Preparation of the patient to minimize movement and the possible use of sedatives or motion-correction software can also improve scan quality.
Step-by-step explanation:
For a Parkinson's patient with motion artifacts on prior brain images, employing motion reduction techniques and scanning modalities like fMRI or PET scans can enhance image clarity.
To obtain high-quality brain scans of a Parkinson's patient with a history of motion during scans, several strategies can be considered. An fMRI, which records brain activity by detecting changes associated with blood flow, can provide detailed images and is advantageous in mapping brain function while a person performs tasks. Preparing the patient properly, ensuring they are as comfortable and as still as possible, can greatly reduce motion artifacts. Use of sedatives or motion-correction software might be investigated, though care must be taken to ensure patient safety.
Additionally, the use of a PET scan, with injection of a tracer to monitor blood flow in the brain, can highlight areas of activity and is perhaps less sensitive to minor movements. However, PET scans have limitations in temporal resolution and expose the patient to radiation. Each case should be meticulously planned with considerations for the patient's condition and history, healthcare provider recommendations, and the type of information required from the scan to ensure the most accurate and informative results.