The American Society of Nuclear Cardiology is presenting a free webinar entitled, “Coding for Myocardial Blood Flow in PET.”
♦ This Wednesday, November 29, 2017 at 3:00PM EST ♦
The American Society of Nuclear Cardiology (ASNC) and the American Society of Echocardiography (ASE) will be presenting a free ImageGuide Registry™ webinar entitled, “How Collecting Data in ImageGuide will Raise Quality and Save Your Lab Money: A Snapshot from ASE and ASNC“.
Improved Quantitative SPECT Myocardial Uniformity of Myocardial Uptake Using a Half-Time, Iterative Resolution Recovery Algorithm
Authors: James A. Case, PhD; Jessica Jensen; Staci A. Courter; Paul Helmuth; Timothy M. Bateman
Introduction: Iterative resolution recovery methods have been used for reducing patient dose and improving laboratory efficiently. Validation techniques of these methods that depend on visual inspection of the images are prone to reader bias and hard to reproduce. We examined the quantitative uniformity of the myocardial counts following reconstruction using OSEM with resolution recovery (RR-OSEM) vs filtered backprojection (FBP) at full- and half-time acquisition times.
Methods: We examined twenty-six patients (21 male, BMI=29+/5) with a ECG-gated myocardial perfusion SPECT study acquired on a CardioMD (Philips) SPECT camera. Data was acquired in a 128×128 acquisition matrix (3.2 mm pixel size, 64 angles). Half-time data sets were created by summing only half of the gated frames. Raw datasets were reconstructed using FBP and RR-OSEM. Data sets were post-filtered using a 5th order, 0.4 Nyquist Butterworth filter. To reduce the influence of variations in perfusion uptake, the image was measured using a previously validated frequency domain masking technique. This technique performs a Fourier transform of the image and then removes the object by masking the lower frequency components. By performing an inverse Fourier transform on the masked frequency data, a “noise only” image can be made. The signal to noise ratio (SNR) was calculated as mean deviation of the myocardial ROI divided by the standard deviation (noise) in the same ROI in the frequency domain masked image.
Results: The signal to noise is summarized in Table 1. The square of the SNR in the half-time FBP reconstructions decreased by a factor of 0.56+/-0.11 when compared to the full-time FBP reconstruction. RR-OSEM half-time reconstructions were more stable, decreasing only by a factor of 0.87+/-0.18 vs. the full-time RR-OSEM reconstruction (p<10-15 FBP vs RR-OSEM).
Conclusions: The quantitative signal to noise was significantly higher with RR-OSEM vs conventional FBP reconstruction. Furthermore, changes in signal to noise were significantly less when going from full-time to half-time imaging.
The program will allow attendees who are interested in starting or expanding a cardiac PET program to visit St. Luke’s Mid America Heart Institute, review the work flow and instrumentation, ask questions of experienced technologists, and review a few cases, including absolute quantitation of myocardial blood flow.
CVIT is presenting on the following topics at the ASNC 2017 Scientific Sessions in Kansas City, MO:
- Thursday, 14SEP2017
- 2:00PM – How to Work Effectively with RBMs to Facilitate Prior Authorization (Empire BC)
- 2:45PM – What is the Ideal Mix of SPECT and PET Equipment for the Modern Nuclear Cardiology Laboratory? (Empire BC)
- Friday, 15SEP2017
- 9:30AM – Predictors of Incorporating Myocardial Blood Flow Measurements into Daily Clinical Rest/Stress Rb-82 PET Myocardial Perfusion Study Reports (Exhibit Hall A, 202b-08)
- 9:30AM – Left Ventricular Ejection Fraction Changes Between Rest and Peak Stress by CMR: A Rb-82 Myocardial Perfusion PET Comparison Study (Exhibit Hall A, 202b-09)
- 10:45AM – ALARA: Practical Approaches to Radiation Reduction (Exhibit Hall B)
- 4:00PM – Which Business Model is Right for my Practice? (Exhibit Hall B)
- Saturday, 16SEP2017
- 9:55AM – Improved Quantitative SPECT Myocardial Uniformity of Myocardial Uptake Using a Half-Time, Iterative Resolution Recovery Algorithm (Exhibit Hall A, 302a-03)
- 11:00AM – Radiation Reduction in PET (Chicago C)
- 4:54PM – Left Ventricular Ejection Fraction Reserve Derived with PET, but not SPECT, Myocardial Perfusion Imaging Predicts Presence of Multi-Vessel Coronary Artery Disease by Coronary Angiography: Same-Patient, Head-to-head (New York, 327-03)
- 5:18PM – Development of a Simple Screening Measure to Approximate Resting Myocardial Blood Flow in Rb-82 PET: Value of the Rate-Pressure Product (327-05)
- 6:21PM – Head-to-head Comparison of SPECT- and PET-Derived Stress Left Ventricular Functional Measurements Using Same-Patient, Near-Simultaneous PET and SPECT Acquisitions (Chicago C, 330-04)
|The American Society of Nuclear Cardiology (ASNC) and the International Atomic Energy Agency (IAEA) bring you the second in a series of complimentary webinars Wednesday at 9:00PM (PT)/12:00 AM (ET)-Yes, this is the correct time to accommodate our global audience!
The session will be based on the ASNC and the Society of Nuclear Medicine and Molecular Imaging (SNMMI) Position Statement on the Clinical Indications of PET for Myocardial Perfusion PET. Attendees will increase their competency of myocardial perfusion PET and learn about the advantages of various PET imaging protocols.
Timothy Bateman, MD
St. Luke’s Health System, University of Missouri- Kansas City School of Medicine
Kansas City, MO
Gary V. Heller, MD, PhD
Gagnon Cardiovascular Institute, Morristown Medical Center
James Case, PhD
Cardiovascular Imaging Technologies, L.L.C
Kansas City, MO
Feeling unprepared to participate in Medicare’s new Merit-based Incentive Payment System? Look no further!
The Centers for Medicare and Medicaid Services (CMS) has established 2017 as a transitional year and allow minimal reporting for clinicians to avoid a downward payment adjustment.
The American Medical Association (AMA) has developed a number of resources including a video entitled, “One patient, one measure, no penality: How to avoid a Medicare payment penalty with basic reporting,” to provide guidance.
Still have questions? Contact CVIT at 816-531-2842 x 107. We are here to help!
We invite you to listen to the following presentations in Denver, Colorado, at the SNMMI 2017 Annual Meeting:
- June 12, 2017:
- Read with the Experts in Nuclear Cardiology, Dr. Timothy Bateman presenting, 10:00AM in Mile High 1A-C
- Oral Abstract Presentation by Dr. James Case: Simplified Approach for Measuring Image Noise in Reconstructed Nuclear Medicine Images Using Frequency Domain Masking (#2874) at 5:35PM in Room 705/707
- Cardiovascular Boot Camp II presented by Dr. Timothy Bateman at 5:45PM in Mile High 2B
- June 13, 2017:
- Poster Abstract Presentation by Dr. James Case: Importance of Lateral Motion Correction in High Resolution Myocardial Perfusion SPECT Imaging (#1195) at 2:45PM in Hall C
- Quantifying Myocardial Blood Flow with PET presented by Dr. James Case at 3:45PM in Mile High 2B
Help us, Help you! Complete the questionnaire to the best of your ability, We can answer questions, provide additional insight, and get help you get working in the registry right away! We look forward to hearing from you!