You are called in on a Saturday afternoon for an emergency s…

You are called in on a Saturday afternoon for an emergency spinal cord compression to the patient’s T-12 thoracic spine. The doctor wants to simulate the patient on the linear accelerator as it would be too painful to move the patient to the simulator then the accelerator. Once you get the patient on the table, after signing an informed consent, you identify where the lesion is located in the spine, and take a portal image.  You are designing an AP/PA treatment portal as an open field, no MLC. What would be the portal design for this treatment for both the AP and PA portal? 

In lab, you purified a compound by recrystallization. You ad…

In lab, you purified a compound by recrystallization. You added hot solvent, completely dissolved your unknown, and removed it from the heat to cool.   Say that your lab partner got impatient and moved it to the ice bath while still hot.  The result would be: