Photon Study guides, Class notes & Summaries

ARRT Registry Exam review What is the correct term used to describe an intravenous injection of a concentrated volume of contrast media? a. bolus b. infusion c. extravasation d. luminal - ANSWER a. bolus Which of the following methods utilizes a detector that captures x-ray energy and converts it into an electronic signal? a. indirect capture b. CCD c. cassette based radiography d. direct capture - ANSWER d. direc...

Attenuation: a. is radiation that emerges from the patient b. describes changes in the x-ray beam as it travels through the patient c. produces only scatter radiation d. occurs only at doses used in radiation therapy - Answer Describes changes in the x-ray beam as it travels through the patient Which photon-tissue interaction makes radiography possible because of its creation of image contrast? a. Compton b. Coherent c. Photoelectric d. Pair production - Answer Photoelectric...

TG-51 def: %dd(10)x correct answer: the photon component of the photon beam percentage depth-dose at 10 cm depth in a 10x10 cm2 field on the surface of a water phantom at an SSD of 100 cm TG-51 def: %dd(10) correct answer: the measured photon beam percentage depth dose at 10 cm depth in a 10x10 cm2 field on the surface of a water phantom at an SSD of 100 cm (includes electron contamination). TG-51 def: %dd(10)Pb correct answer: same as %dd(10) except that a 1 mm lead foil is in place be...

Laser stands for what? - Light Amplification by Stimulated Emission of Radiation What is the distance measured in nanometers between two peaks or two troughs known as? - Wavelength Light of only one color & one specific wavelength is known as? - Monochromatic Refraction is also known as what? - Transmission The process where by a newly created photon of light (generated through amplification) acquires energy equal to the photons that created it is known as? - Stimulated Emission The...

CT Registry Review (MIC) Questions and Answers 100% Pass In order for an x-ray photon to be measured it must: 1. enter the detector chamber 2. be absorbed by the detector material 3. be converted to a measurable event - Correct Answer ️️ -1,2,3 Which system component converts the projection attenuation data into the proper digital form for the array processor? - Correct Answer ️️ -analog-to-digital converter Which of the following is NOT a function of a PACS system? a. reconstru...

Radiologic Technology ARRT Review Exam Questions And Answers Attenuation: a. is radiation that emerges from the patient b. describes changes in the x-ray beam as it travels through the patient c. produces only scatter radiation d. occurs only at doses used in radiation therapy - ANS Describes changes in the x-ray beam as it travels through the patient Which photon-tissue interaction makes radiography possible because of its creation of image contrast? a. Compton b. Coherent ...

CT technologists must understand both the ___________ & ___________ of examinations and take steps to maximize the ________ & minimize the ____________. - correct answer risks & benefits positive, negative What are the two components regarding radiation dose to the patient? - correct answer 1) appropriate patient selection 2)minumizing the dose to the pt w/ out compromising the diagnostic image quality CT scans provide one of the ____________ radiation doses in diagnostic radiology. ...

1. Know the causes of an abdominal aortic aneurysm. The proposed causes of AAA include atherosclerosis, inflammation, mycotic infection, inheritable connective tissue disorders (Marfan syndrome, type IV Ehlers-Danlos syndrome), and trauma. Traditionally, atherosclerosis has been considered the most common cause of AAA. However, aneurysm formation is associated with atherosclerosis in only 25% of cases. 2. Why is CT imaging limited in women? Single-photon emission CT imaging is technical...

CT Registry Review (MIC) Questions and Answers Already Graded A In order for an x-ray photon to be measured it must: 1. enter the detector chamber 2. be absorbed by the detector material 3. be converted to a measurable event 1,2,3 Which system component converts the projection attenuation data into the proper digital form for the array processor? analog-to-digital converter Which of the following is NOT a function of a PACS system? a. reconstruction of the image from the raw data b. long ...

TCDHA Radiography Theory Midterm Review Questions and Answers (Graded A)TCDHA Radiography Theory Midterm Review Questions and Answers (Graded A)TCDHA Radiography Theory Midterm Review Questions and Answers (Graded A) Scatter radiation - ANSWER-- form of secondary radiation - result of xray photon deflected in all directions travelling to all parts of client's body and to all areas of the op - detrimental to client and radiographer Compton scatter - ANSWER-- Evidence of ionization - xra p...