3 fields used in mri - Study guides, Class notes & Summaries

Is SNR proportional or inversely proportional to voxel volume - ANSWERS-Proportional 3 fields used in MRI - ANSWERS--static magnetic field -TVMF (gradient field) -RF field 3 main types of magnets used - ANSWERS--Superconducting (most common_ -Resistive -Permanent FDA limits for the 3 fields in MRI - ANSWERS-Static field: 2T TVMF: 3T/s RF field: - does not cause an increase in temperature of more than .5 deg C or any body part of 1 deg C -SAR does not exceed 1W/kg avg over 25% o...

Is SNR proportional or inversely proportional to voxel volume - ACCURATE ANSWER-Proportional 3 fields used in MRI - ACCURATE ANSWER--static magnetic field -TVMF (gradient field) -RF field 3 main types of magnets used - ACCURATE ANSWER--Superconducting (most common_ -Resistive -Permanent FDA limits for the 3 fields in MRI - ACCURATE ANSWER-Static field: 2T TVMF: 3T/s RF field: - does not cause an increase in temperature of more than .5 deg C or any body part of 1 deg C -SAR does...

Introduction to Radiologic and Imaging Sciences and Patient Care 7th Edition Adler Test Bank Chapter 01: Introduction to Imaging and Radiologic Sciences Adler: Introduction to Radiologic and Imaging Sciences and Patient Care, 7th Edition MULTIPLE CHOICE 1. The use of X-rays to create a medical image on patients is referred to as a. electrocardiography. b. radiography. c. sonography. d. magnetic resonance imaging. ANS: B Radiography is the making of records, known as radiographs...

Magnetic Resonance Imaging (MRI) Questions and Answers 2023 What does MRI rely on? [3] electromagnetic fields, radio waves, and hydrogen levels in the body What % of the human body is hydrogen? 70% What distinguishes MRI from CAT scans/x-rays? no ionising radiation present What is magnetic force measured in? tesla At what strength is the MRI magnet maintained? constant tesla strength What is the magnetic strength of clinical scanners? approx. 1.57, 3T,...

NSG 6420: NEURO DISORDER EXAM QUESTIONS AND ANSWERS HEADACHE TRIGGERS -Answer-MIGRAINE • Stress • Caffeine • Altered sleep • Specific foods, missed meals • Menses • Alcohol • Hormone supplements CLUSTER • Smoking • Alcohol • Vasodilators • Seasonal changes • Altitude changes TENSION • Stress • Fatigue/lack of sleep • Anxiety/depression • Caffeine/tobacco overuse • Latent hostility CN Assessments -Answer-CN I, olfactory After establishing patency of nos...

Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatom...

use of x-rays to create a medical image on patients is referred to as: radiography 3 multiple choice options Particular care must be taken when using radiation for medical imaging. This is the result of radiation's ability to create __________ in human tissue and possible biochemical changes. ionizations 3 multiple choice options In the diagnosis of patient disease states, physicians can select from an array of medical diagnostic modalities. A few of these involve the use of ioniz...

MRI uses _______________and _______________to obtain a mathematically reconstructed image. - correct answer Magnetic fields and radio waves The MRI image represents differences in the patient's tissues in the number of____________________ and the rate at which they recover from radiofrequency stimulation. - correct answer Nuclei Which nucleus is most suitable for MRI? and Why? - correct answer Hydrogen (single-proton nucleus) The large amount of hydrogen present in any organism (Hydroge...

MRSO: Exam mark (Answered 100% Correctly) MRSO: Exam mark (Answered 100% Correctly) Which of the following describe when a non-ferrous object is repulsed by static magnetic field? a. Fourier transformation b. Lenz's force c. Ohm's law d. Larmor equation b. Lenz's force What is the FDA SAR limit for the whole body in first level controlled operating mode? a. 8 W/kg for 15 mins b. 4 W/kg for 15 mins c. 3 W/kg for 10 mins d. 7 W/kg for 20 mins b. 4 W/kg for 15 mins Gadolinium...

ATI FUNDAMENTALS PROCTORED EXAM RETAKE GUIDE 1. CHAPTER 1: HEALTH CARE DELIVERY SYSTEMS A. B. Components of Health care systems a. Participants 1. Consumers- clients 2. Providers a. Licensed providers: registered nurses, license practical (or vocational) nurses (LPN), advanced practice nurses (APN), medical doctors, pharmacists, dentists, dietitians, physical/respiratory/occupational therapists, etc b. Unlicensed providers: assistive personal b. Settings 1. Hospitals, homes...