Which of the following is NOT a typical definitive prescription dose for a standard Head and Neck case?

Which of the following were direct innovations that led to the availability of IMRT treatment planning? 1. Introduction to Motorized Multi-Leaf Collimators (MLC) 2. Enhanced computing capabilities to support complex inverse planning algorithms 3. Introduction of CBCT Image Guidance capabilities on Linear Accelerators 4. Introduction of Computed Tomography (CT) into radiation treatment planning

Which of the following serial organs are a concern in brain planning?

Using the signaling diagram below, answer the following questions:A. Places in this diagram that have more than one arrow before listing an event or protein represent more than one additional step. What occurs within the steps that are missing between Ras (a small G protein) and MAP kinase?B. E2F protein can be activated by the action of multiple other proteins. List 2 proteins whose activity increases the amount of active E2F.

The figure below shows how single-celled eukaryotes called Dictyostelium sense a chemical in their environment (they use the receptor at the top of the figure) and modify their cellular structure to be able to crawl towards that chemical (aka, chemotaxis). Using the right side of the figure, what type of actin structure is formed after Rac1 has been activated? How do you know?

Which abnormal variant of hemoglobin has 1 of the 146 amino acids in the beta chain altered?  

What is the equation used to calculate the difference in oxygen content between arterial and mixed venous blood (C(a-v)02)? What is the normal value for C(a-v)02?

In some clinical situations, oxygen consumption is constant over short periods; thus making cardiac output and the C(a-v)02 inversely proportional.

What is the equation used to calculate the volume of oxygen in the dissolved state in the blood?

What is the equation for calculating total oxygen transport?