Source skin distance ssd - Study guides, Class notes & Summaries

ABR EXAM 2024 QUESTIONS WITH COMPLETE SOLUTIONS!! In order for a block to have as little penumbra as possible, what must be the requirements of the block? - ANS The block edge must be diverging In treatment planning, which factor takes into account the effects of the flattening filter? - ANS Off axis correction factor A patient is prone and going to be treated 100 SSD to a depth of 5.0 cm. The field size is 14x8. You think you setup to 100 SSD but the ODI is off. The...

Physics of Imaging Ch. 27 Fluoroscopy Questions and Answers, Graded A+ Changing from standard in magnification mode on an image intensifier: 1. increases patient dose 2. decreases the patient dose 3. produces a magnified image 4. decreases the minification gain 1, 3, and 4 brightness gain is the product of the ____ gains minification and flux multiplying the flux gain by the minification gain in the image intensifier will equal the total brightness gain the tv camera...

Fluoroscopy Questions and Answers, Graded A+ -What does Dynamic means: -Always active or changing. -Having or showing a lot of energy. -Of or relating to energy, motion, or physical force. Fluoroscopy allows for? -Imaging of the movement of internal structures. Can visualize function and motion in real time. -Commonly used for GI, vascular, and urinary studies, ect. -This often requires the use of contrast media. When and by whom was fluoroscopy invented? -Thomas Edison. -...

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

Fluoroscopy Questions and Answers, Graded A+ Who invented fluoroscopy and when? Thomas Edison in 1896 The cones are in charge of what type of vision? Photopic/ day vision Rods are in charge of? Scotopic/ night vision Where is the x-ray tube located? Under the table Diagnostic tube factors are? 20-1000mA range (15") Fluoroscopic tube factors are? 0.5- 5.0 mA (12") Why and when did the image intensification tube come about? 1948; 500-8000 times m...

Complete Test Bank Principles and Practice of Radiation Therapy 4th Edition Washington Containing Questions and Answers with rationales (Chapter 1-38) RT chart - Correct Answer>>record of the patient's radiation treatment; separate from an individual's hospital chart Electronic medical records (EMR) - Correct Answer>>charting, text, and image information is stored in a central database The rationale for radiation treatment - Correct Answer>>captures relevant patien...

Fluoroscopy Questions and Answers, Graded A+ Advantages of Image Intensified fluoroscopy over non-Image Intensified fluoroscopy include. A. Increased brightness B. Decreased patient radiation dose C. Decreased shape distortion d. all of the above e. More than one but not all of the above E. More than one but not all of the above Advantages of digital fluoroscopy over conventional fluoroscopy include. a. Better contrast resolution b. Stored images can be manipulated without re-exp...

ch 10 fluro Questions and Answers 2023, Graded A+ Traditional fluoroscopic units are designed with the x-ray tube____the table and the image-intensifier tube or digital detector located_____ underneath, overtop the patient Modern remote-control units integrate or are configured with the table and tube in one system, allowing for both fluoroscopic and radiographic procedures. These remote-controlled systems have the x-ray tube located____and the imaging detector located above the patien...

CT Registry Test Review Q&A Already Passed 2023 What is the smallest component of a digital image *ANS* pixel How many CT numbers are assigned to each pixel in the image matrix? *ANS* One In a CT image, the CT number *ANS* Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a *ANS* pixel What is an element of the digital image *ANS* pixel Which of the following influences the spatial resolution...

Radiographic image analysis chapter 1 and 2 exams questions and answers The patient demographic requirements for radiographic images include all of the following except: - ANSWERS:Technologist identification Which of the following is true about image markers 1. They are radiopaque 2. They should be reversed before being placed on the IR. 3. They should be positioned as close to the median plane as possible. 4. They will be magnified is positioned on the imaging table or patient - ...