Clinical Research Directory

nTMS in Planning Stereotactic Radiosurgery in Patients With Brain Metastases in the Motor Cortex

This trial studies how well nTMS works in planning for stereotactic radiosurgery in patients with brain metastases in the motor cortex. Stereotactic radiosurgery is a type of radiation therapy that delivers high doses of radiation, which can sometimes lead to damage occurring to the brain and surrounding areas. The motor cortex (the part of the nervous system that controls muscle movement), however, currently has no radiation dose limit. nTMS is a non-invasive tool that uses sensors on a patient's muscle to trace the location in their brain that controls that muscle and is currently used by doctors to decide where to operate so as not to damage the motor nerves. nTMS may effectively help plan radiation treatment using SRS and help doctors decide on how much radiation can be used on motor nerves.

Efficacy of Botox Injection of the Masticatory Muscles in Head &Neck Cancer Patients with Trismus After Radiotherapy

Trismus is a common side effect in head and neck cancer patients after radiation therapy. This project aims to explore the therapeutic effect of Botulinum toxin (Botox) injection to the masticatory muscles in the above-mentioned patients. In this project, Botulinum toxin will be injected into the masticatory muscles (medial pterygoid and masticatory muscles), combined with oral rehabilitation exercises, to reduce the patient's masticatory muscle tension and spasm. Patient's mouth opening range, quality of life, trismus condition and pain will be evaluated to understand its efficacy.