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True or false: An achiral molecule is superimposable on its mirror image.

What invention allowed intensity modulated radiation therapy to become a reality?

The oncologist prescribes a non-isocentric four-field box to be treated to midline from all portal entries. The patient’s AP/PA separation is is 28 cm and the right/left separation is 42 cm. What would be the SSD at the AP portal and the right lateral portal respectively?

Choose the best definition for conformational isomer.

Choose the Newman projection that represents the most stable conformation of 3,3-dimethylhexane viewed along the C3-C4 bond.

The oncologist is ordering an iodinated contrast injection simulations for a patient diagnosed with base of tongue cancer. The patient did not need kidney function lab work  per the department protocol. You have to screen the patient for an iodinated contrast injection before having them sign the consent form. Which of the following would not be screened for before giving a contrast injection? 

Extra Credit: IGRT Module The phase-based CT acquisition method that tracks tumor motion throughout the breathing cycle is 

Which alkene is the most stable?  

Extra Credit: IGRT Module Which of the following are forms of portal imaging?  1. Radiographs 2. Surface imaging 3. Electronic portal-imaging devices (EPID)

A digitally reconstructed radiograph contains the ______ information and is considered ______ images.