Medical accelerator hazards, which cause the dose to be delivered to the wrong area are caused by all of the following except

Your patient is lying on the treatment table and the doctor orders that the isocenter be shifted or moved caudal in the patient. Which direction would the treatment table (PSA) need to be moved?

Fractionation is best defined as a/an

You have a metastatic brain patient coming to your department to begin whole brain treatments. The doctor orders parallel opposed treatments to depth of midline in the brain. What is the best way to determine depth?

Describe the following effects of US AND give 2 indications for each.  Answer in the following format:  1. Effect – indication -indication 2. Effect -indication -indication  

US primarily affects which of the following structures?  

A PTA initiates US using water immersion to the distal calf of a patient rehabilitating from a motor vehicle accident. The PTA had previously administered US using direct contact, 1 MHz frequency at 1.2 W/cm2 x 5 minutes. In order to maintain the same amount of tissue heating as originally used with direct contact technique, the PTA should:    

Evaluation findings for a 10-year-old include pain and limited range of motion following a surgical repair of the medial collateral ligament and the anterior cruciate ligament. The plan of care includes the use of physical agents for pain control and tissue healing. What modality should the physical therapist assistant AVOID the use of?  

To penetrate deeper tissues using US, what setting must be utilized?   

List 4 contraindications of ultrasound.