PTV Study guides, Class notes & Summaries

Goal of radiation Correct Answer: - to irradiate a predefined target volume while minimizing exposure to adjacent normal tissues. - Radiation oncologists and medical oncologists collaborate to determine overall goals and treatment approaches. - Multiple diagnostic procedures are employed to define the tumor volume and prescribe the correct dose of radiation. - Radiation physicists, dosimetrists, oncologists, and therapists use sophisticated hardware and software to model geometric an...

SBRT lung fractionation - ANS 6-30 Gy in 1-5fx 5 Fx x 10 Gy 4 Fx x 12 Gy 3 Fx x 20 Gy Dose heterogeneity - ANS 1. Overlapping beams with tight margin will put high doses in the center of the target. 2. High Doses in Center may not help radiobiologically but there is no particular disadvantage. 3. Higher dose of radiation administered anywhere within the tumor will enhance the composite cytotoxic effect of and increase the TCP. 4. EUD (Equivalent Uniform Dose) is more rob...

What Does UTC stand for - ️️Coordinated Universal Time Airspeed - ️️The forward speed of an aircraft relative to the air through which it moves **Provide the definition of the following aviation terms** PTV Tarmac Finger - ️️PtV - Passenger Transfer Vehicle. special kind of bus used to transport passengers to and from the aircraft and the terminal It may be equipped with a hydraulic lift which enables the vehicle to be raised up level with the aircraft door or gate **Ta...

The first major arterial branch of the Aorta is the: - Correct answer-Innominate Artery Which of the following arteries does NOT arise from the Subclavian Artery? - Correct answer-Superior Thyroid The angular artery is the terminal part of the: - Correct answer-Facial artery The arterial pulsations felt in front of the ear and just above the zygomatic arch are from which artery? - Correct answer-Superficial Temporal The CCA divides into its external and internal branches usually at the lev...

1. A patient presents with a 6-day history of rapid weight gain. The most likely explanation is: A.) Dysphagia B.) Excessive absorption of nutrients C.) Diabetes mellitus D.) Accumulation of body fluids 2. A patient presents a routine check-up. You see that the patient’s vital signs have already been recorded as follows: T 98.4 F, HR 74, R 18, BP 180/98. What would be the MOST appropriate action related to this patients’ vital signs? A.) the blood pressure should be repeated at the next ...

IMRT stands for Intensity Modulated Radioactive Treatment. - ANS False VMAT is rotational IMRT. - ANS True The best energy for IMRT is: - ANS 6MV Neutrons are produced in the accelerator at energies of: - ANS 15MV Neutrons are a planning and shielding concern with energies of what and higher? - ANS 15 MV The best energy to use for IMRT to ensure the minimal penumbra is: - ANS 6MV IMRT plans with greater than what number of beams show little gain in...

IMRT stands for Intensity Modulated Radioactive Treatment. - ANS False VMAT is rotational IMRT. - ANS True The best energy for IMRT is: - ANS 6MV Neutrons are produced in the accelerator at energies of: - ANS 15MV Neutrons are a planning and shielding concern with energies of what and higher? - ANS 15 MV The best energy to use for IMRT to ensure the minimal penumbra is: - ANS 6MV IMRT plans with greater than what number of beams show little gain in...

ATLS Practice Test 3 Questions & Answers latest updateATLS Practice Test 3 ^^^^^^^^^^^^^^^^^^^^ • Signs and symptoms of airway compromise include all of the following except: • change in voice. • decreased pulse pressure. • dyspnea and agitation. • tachypnea. • A 29yearold female arrives in the emergency department after being involved in a motor vehicle crash. She is 30 weeks pregnant. She was restrained with a lap and shoulder belt, and an airbag deployed. Which o...

What is the TD 5/5 for the kidney? - correct answer 23 Gy What would a QA level 1 action item require? - correct answer Inspection, but treatment can continue What is the backscatter factor at the level of Dmax? - correct answer Tissue Air Ratio (TAR) What technique can be used to accomplish forced shallow breathing? - correct answer Gating What are the parts of the oral cavity? - correct answer Floor of the mouth, retromolar trigone, gingiva, anterior 2/3 of tongue, hard palate W...

the small saphenous vein originates correct answers posterior to the lateral malleolus and ascends along the midline aspect of the posterior calf the mesenteric to aortic ratio is considered normal when it is? correct answers 1.0 or less All of the following are tributaries to the pop vein except - peroneal vein - femoral vein - PTV - small saphenous vein correct answers femoral vein The release of norepinephrine into the blood stream has what effect on the arterioles? correct answe...