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CT REGISTRY Exam Compilations Questions and Answers 2023 (Answered) how do you reduce beam hardening *ANS* 1. Increase dose 2. Reduce collimation--Reduce slice thickness 3. Increase window width At what level does the abdominal aortal bifurcate? *ANS* L4 What is the typical scan delay after injection of contrast media for studies of the liver? *ANS* 30-45 seconds What window settings provide the best tissue differentiation within the liver? *ANS* window width= 140, level= 60 Wha...

4TH SEMESTER URDEN 1. Which of the following structures is the primary pacemaker of the heart? a. Ventricular tissue c. Sinoatrial node b. Atrioventricular node d. Purkinje fibers ANS: C With an intrinsic rate of 60 to 100 beats/min, the sinoatrial node is the primary pacemaker in a healthy heart. The atrioventricular node beats 40 to 60 beats/min. Ventricular tissue must have an electrical impulse to contract. Purkinje fibers beat 15 to 40 beats/min. 2. The atrioventricular (AV) nod...

4TH SEMESTER URDEN Exam Questions completed Correctly 4TH SEMESTER URDEN Exam Questions 1. Which of the following structures is the primary pacemaker of the heart? a. Ventricular tissue c. Sinoatrial node b. Atrioventricular node d. Purkinje fibers ANS: C With an intrinsic rate of 60 to 100 beats/min, the sinoatrial node is the primary pacemaker in a healthy heart. The atrioventricular node beats 40 to 60 beats/min. Ventricular tissue must have an electrical impulse to contract. Purk...

Exam (elaborations) TEST BANK FOR_SERWAY AND VUILLE’S_COLLEGE PHYSICS NINTH EDITION, VOLUMES 1 & 2 Chapter 1—Introduction MULTIPLE CHOICE 1. Since 1983 the standard meter has been defined in terms of which of the following? a. specific alloy bar housed at Sevres, France b. wavelength of light emitted by krypton-86 c. distance from the Earth's equator to the North Pole d. the distance light travels in a certain fraction of a second ANS: D PTS: 1 DIF: 1 TOP: 1.1 Standards of L...

4TH SEMESTER URDEN 1. Which of the following structures is the primary pacemaker of the heart? a. Ventricular tissue c. Sinoatrial node b. Atrioventricular node d. Purkinje fibers ANS: C With an intrinsic rate of 60 to 100 beats/min, the sinoatrial node is the primary pacemaker in a healthy heart. The atrioventricular node beats 40 to 60 beats/min. Ventricular tissue must have an electrical impulse to contract. Purkinje fibers beat 15 to 40 beats/min. 2. The atrioventricular (AV) nod...