Articles from Circulation

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Lockie, Tim BSc, MBChB; Nagel, Eike MD, PhD; Redwood, Simon MD; Plein, Sven MD, PhD;
Use of Cardiovascular Magnetic Resonance Imaging in Acute Coronary Syndromes.[Review]
Circulation. 119(12):1671-1681, March 31, 2009.

Clinical Physiology and Functional Imaging Vol 29 Iss 4 2009

Early View (Articles Available Online in Advance of Print) Review Articles. N.B. We do not have full text access to this title

229-240
Cardiac magnetic resonance imaging in valvular heart disease
Juha W. Koskenvuo, Vesa Järvinen, Jussi P. Pärkkä, Tuomas O. Kiviniemi, Jaakko J. Hartiala
AbstractPublished Online: 11 Mar 2009

Original Articles

245-254
Differences between smooth pursuit and optokinetic eye movements using limited lifetime dot stimulation: a functional magnetic resonance imaging study
Caroline K. L. Schraa-Tam, Aad van der Lugt, Marion Smits, Maarten A. Frens
AbstractPublished Online: 4 Mar 2009

Articles from Circulation

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CARDIAC RADIONUCLIDE IMAGING WRITING GROUP
ACCF/ASNC/ACR/AHA/ASE/SCCT/SCMR/SNM 2009 Appropriate Use Criteria for Cardiac Radionuclide Imaging: A Report of the American College of Cardiology Foundation Appropriate Use Criteria Task Force, the American Society of Nuclear Cardiology, the American College of Radiology, the American Heart Association, the American Society of Echocardiography, the Society of Cardiovascular Computed Tomography, the Society for Cardiovascular Magnetic Resonance, and the Society of Nuclear Medicine: Endorsed by the American College of Emergency Physicians
Circulation.
Status
Publish Ahead of Print, published online before print, 18 May 2009

Articles from Circulation : Ionizing Radiation in Cardiac Imaging

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Gerber, Thomas C. , Chair; Carr, J Jeffrey , Co-Chair; Arai, Andrew E. ; Dixon, Robert L. ; Ferrari, Victor A. ; Gomes, Antoinette S. et al. The American Heart Association makes every effort to avoid any actual or potential conflicts of interest that may arise as a result of an outside relationship or a personal, professional, or business interest of a member of the writing panel. Specifically, all members of the writing group are required to complete and submit a Disclosure Questionnaire showing all such relationships that might be perceived as real or potential conflicts of interest.
Ionizing Radiation in Cardiac Imaging: A Science Advisory From the American Heart Association Committee on Cardiac Imaging of the Council on Clinical Cardiology and Committee on Cardiovascular Imaging and Intervention of the Council on Cardiovascular Radiology and Intervention

Circulation. 119(7):1056-1065, February 24, 2009.

Interventional Cardiovascular Magnetic Resonance

Interventional Cardiovascular Magnetic Resonance: Still Tantalizing
Ratnayaka K, Faranesh AZ, Guttman MA, Kocaturk O, Saikus CE, Lederman RJ
Journal of Cardiovascular Magnetic Resonance 2008, 10:62 (29 December 2008)
[Abstract] [Provisional PDF]

Articles from Anesthesia and Analgesia

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Dzwonczyk, Roger; Fujii, Jeffrey T. ; Simonetti, Orlando ; Nieves-Ramos, Ricardo ; Bergese, Sergio D.
Electrical Noise in the Intraoperative Magnetic Resonance Imaging Setting
Anesthesia & Analgesia. 108(1):181-186, January 2009.
Abstract
BACKGROUND: Intraoperative magnetic resonance imaging (iMRI) is a tool now commonly used in neurosurgery. Safe and reliable patient care in this (or any other) operating room setting depends on an environment, where electrical noise (EN) does not interfere with the operation of the electronic monitoring or imaging equipment. In this investigation, we evaluated the EN generated by the iMRI system and the anesthesia patient monitor used at this institution that impacts the performance of these two devices.METHODS: We measured the EN generated by our iMRI-compatible anesthesia patient monitor as detected by the EN analysis algorithm in our iMRI system. We measured the EN generated by our iMRI system during scanning as detected in the electrocardiogram (ECG) waveform of our patient monitor. We analyzed the effects on EN reduction and signal quality of the ECG noise filters provided in our iMRI-compatible anesthesia patient monitor.RESULTS: Our patient monitor generated EN that was detectable by the iMRI EN analysis algorithm; however, this interference was within the iMRI manufacturer's acceptable limits for an iMRI scan (<10%>

Skubas, Nikolaos

Intraoperative Doppler Tissue Imaging Is a Valuable Addition to Cardiac Anesthesiologists' Armamentarium: A Core Review. [Review]
Anesthesia & Analgesia. 108(1):48-66, January 2009.
Abstract
Endocardial motion and surface/volume changes during the cardiac cycle are echocardiographic methods for regional (analysis of wall motion) and global (fractional area change, stroke volume, and ejection fraction) evaluation of cardiac function. These conventional methods can be subjective, and/or time consuming and, depending upon circumstances, may divert the anesthesiologist's attention from intraoperative activities. Doppler tissue imaging (DTI) is a novel echocardiographic technique, which displays and measures systolic and diastolic velocity from a myocardial region. DTI is simple to perform and independent of adequate endocardial imaging. The numeric information (velocity or time intervals) is easily obtained and measured. Assessment of systolic and diastolic function on regional (detection of ischemia) as well as global level (ejection fraction, grading of diastolic dysfunction) and evaluation of filling pressure can be derived from DTI signals and used by any practicing cardiac anesthesiologist. This review describes the principles, imaging modalities, and clinical applications of DTI.(C) 2009 by International Anesthesia Research Society.

Tousignant, Claude
CON: Intraoperative Doppler Tissue Imaging Is a Valuable Addition to Cardiac Anesthesiologists' Armamentarium. [Editorial]
Source
Anesthesia & Analgesia. 108(1):41-47, January 2009.

Kronzon, Itzhak MD

PRO: Intraoperative Doppler Tissue Imaging Is a Valuable Addition to Cardiac Anesthesiologists' Armamentarium. [Editorial]
Source
Anesthesia & Analgesia. 108(1):37-40, January 2009.

Hilberath, Jan N. ; Shernan, Stanton K. ; Segal, Scott ; Smith, Brian et al

The Feasibility of Epicardial Echocardiography for Measuring Aortic Valve Area by the Continuity Equation

Anesthesia & Analgesia. 108(1):17-22, January 2009.
Abstract
BACKGROUND: Measuring the aortic valve area (AVA) remains an important component of a comprehensive intraoperative echocardiographic examination in patients undergoing aortic valve surgery. Epicardial echocardiography (EE) represents an accessible alternative to transesophageal echocardiography (TEE), however, its agreement and correlation with other imaging modalities for measuring AVA has not been systematically validated.METHODS: EE was used in 85 patients undergoing cardiac surgery to measure AVA (AVA-EE) using the continuity equation. AVA-EE was compared to measurements obtained by intraoperative transesophageal echocardiography (AVA-TEE) in the same population. In a subset of patients, AVA-EE was also compared to AVA measurements from either preoperative transthoracic echocardiography (AVA-TTE) (n = 65) or cardiac catheterization (AVA-Cath) (n = 35) that were acquired within 4 wk before the date of surgery.RESULTS: Adequate trans-AV Doppler recordings were obtained in 94% of patients for AVA-TEE and 100% of patients for AVA-EE. EE measurements of AVA showed close agreement with TEE measurements (mean difference [bias] +/- 95% CI = -0.09 cm2 +/- 0.18 cm2, r2 = 0.83, P < ci =" -0.03" r2 =" 0.87," ci =" -0.06" r2 =" 0.81,">

Microbubbles detection during cardiopulmonary bypass with transoesophageal echocardiography

Microbubbles detection during cardiopulmonary bypass with transoesophageal echocardiography: a case report.
Zanatta P, Bosco E, Salandin V, Salvador L, Valfre C, Sorbara C
Cases Journal, 2008 1:141 ( 5 September 2008 )
[Abstract] [Provisional PDF]

Articles from Circulation

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Henry, Timothy D. ; Lesser, John R. ; Satran, Daniel
Myocardial Fibrosis From Severe Carbon Monoxide Poisoning Detected by Cardiac Magnetic Resonance Imaging.
Circulation. 118(7):792, August 12, 2008.

Mikolich, J Ronald MD
Right Ventricular Diastolic Collapse by Cardiac Magnetic Resonance Imaging
Circulation. 118(8):e122-e125, August 19, 2008.
Kim, Young Jin ; Kang, Seok-Min ; Hur, Jin ; Lee, Hye-Jeong
Chronic Cardiac Transplant Rejection: Evaluation With Magnetic Resonance Imaging
Circulation. 118(8):885-886, August 19, 2008.

Cury, Ricardo C. ; Shash, Khalid ; Nagurney, John T. ; Rosito, Guido ; Shapiro, Michael D.
Cardiac Magnetic Resonance With T2-Weighted Imaging Improves Detection of Patients With Acute Coronary Syndrome in the Emergency Department
Circulation. 118(8):837-844, August 19, 2008.
Abstract
Background-: Cardiac magnetic resonance (CMR) imaging permits early triage of patients presenting to the emergency department with acute chest pain but has been limited by the inability to differentiate new from old myocardial infarction. Our objective was to evaluate a CMR protocol that includes T2-weighted imaging and assessment of left ventricular wall thickness in detecting patients with acute coronary syndrome in the emergency department.Methods and Results-: In this prospective cohort observational study, we enrolled patients presenting to the emergency department with acute chest pain, negative cardiac biomarkers, and no ECG changes indicative of acute ischemia. The CMR protocol consisted of T2-weighted imaging, first-pass perfusion, cine function, delayed-enhancement magnetic resonance imaging, and assessment of left ventricular wall thickness. The clinical outcome (acute coronary syndrome) was defined by review of clinical charts by a consensus panel that used American Heart Association/American College of Cardiology guidelines. Among 62 patients, 13 developed acute coronary syndrome during the index hospitalization. The mean CMR time was 32+/-8 minutes. The new CMR protocol (with the addition of T2-weighted and left ventricular wall thickness) increased the specificity, positive predictive value, and overall accuracy from 84% to 96%, 55% to 85%, and 84% to 93%, respectively, compared with the conventional CMR protocol (cine, perfusion, and delayed-enhancement magnetic resonance imaging). Moreover, in a logistic regression analysis that contained information on clinical risk assessment (c-statistic=0.695) and traditional cardiac risk factors (c-statistic=0.771), the new CMR protocol significantly improved the c-statistic to 0.958 (P<0.0001).conclusions-:>

Arai, Andrew E. MD
Using Magnetic Resonance Imaging to Characterize Recent Myocardial Injury: Utility in Acute Coronary Syndrome and Other Clinical Scenarios. [Editorial]
Circulation. 118(8):795-796, August 19, 2008.

Prompona, Maria ; Kozlik-Feldmann, Rainer ; Mueller-Hoecker, Josef
Magnetic Resonance Imaging Characteristics in Carvajal Syndrome (Variant of Naxos Disease).
Circulation. 116(20):e524-e530, November 13, 2007.

Cardiac luxation and CT

Leibecke, Thorsten MD; Stoeckelhuber, Beate Maria MD; Gellissen, Joerg MD; Bartels, Claus MD, PhD; Meier, Torsten MD; Eberhardt, Frank MD; Helmberger, Thomas MD, PhD; Rademaker, Juergen MD;

Posttraumatic and Postoperative Cardiac Luxation: Computed Tomography Findings in Nine Patients

Journal of Trauma-Injury Infection & Critical Care. 64(3):721-726, March 2008.
Abstract
Background: Posttraumatic and postoperative cardiac luxation represents a serious complication of pericardial rupture, and early diagnosis is important. The purpose of this study is to determine signs of left cardiac luxation on computed tomography (CT).Methods: CT scans in nine patients with pericardial rupture and cardiac luxation after blunt chest trauma (n = 7) and postoperatively after extended left pneumectomy (n = 2) were reviewed for abnormalities. We analyzed the clinical history, clinical findings, and the imaging findings.Results: Dislocation of the heart to the left and pneumopericardium were seen in nine patients. Five of these nine patients revealed "entrapment" of the left heart between the proximal ascending aorta and the descending aorta. All patients underwent a pneumopericardium. All patients with a history of trauma showed a left-sided pneumothorax but no pericardial effusion.Conclusions: CT plays a key role for early diagnosis of cardiac luxation. Dislodgment of the heart, entrapment of the left atrium and ventricle, and pneumopericardium associated with pneumothorax are the most important CT findings.

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