Submitting an Abstract

Important Information

1. If you are submitting more than one abstract, then you can use the same e-mail address and password for each abstract.
   
2. Abstracts cannot be more than 2500 characters.  Each table and each image count as 425 characters.

Preparation of Your Abstract

1. Abstracts may not be submitted if previously presented at a national or international meeting.
   
2. The title should be in title case (upper and lower case) and as brief as possible but not long enough to indicate clearly the nature of the study.  No period is needed at the end.
   
3. Authors' information should be entered into the fields requested.  Fields with asterisks are required.  Follow the same steps for each additional author.
   
4. Abstracts should state briefly and clearly the purpose, methods, results, and conclusions of the work.
   

   Background	Clearly state the purpose of the abstract
   Methods	Describe your selection of observations or experimental subjects clearly
   Results	Present your results in a logical sequence using text, tables, or illustrations
   Conclusion	Emphasize new and important aspects of the study and conclusions that are drawn from them

   
   
5. The body of abstracts may be uploaded from a Word document or entered directly into the abstract body box.  Title, authors, and institutions should not be included in the body of the abstract.

The Submission Process

1. Log into the submission system when your abstract is completed and ready to send.  To log in, enter your e-mail address and the password you chose when you registered with the system.
   
2. When you click the "log in" button, you will be taken to a screen from which the submission process starts.  On this first page, you can click on a new abstract, or, if you have already submitted abstracts, then you can open a previously submitted abstract.
   
3. Submitting an abstract is a multi-step process.  Each step asks several questions:

• Step 1: Respond to the affirmations and then enter the title.
  
• Step 2: Follow the steps to enter author information.  Repeat this step as needed to submit all authors — be sure to complete the disclosure information for each author.
  
• Step 3: Answer all mandatory questions.
  
• Step 4: Submit body of abstract (do not include title and author information).
  
• Step 5: Review your submission.  Be sure to click the button at the bottom if you would like to receive confirmation of your submission.

Amending a Submission

You may want to change your answers to some of the questions on the submission form or to change the abstract file.

1. Log into the submission system.
   
2. You will see a list of the abstracts that you have submitted.  Click on the abstract that you wish to change.
   
3. Click on the section of the abstract that you wish to amend in the upper left hand column (i.e., title, author, additional information)

Withdrawing an Abstract

If you want to withdraw an abstract, click on the button at the end of the submission marked "delete submission."

Sample Abstract

Effect of 3D Iterative Reconstructions of Gated SPECT Perfusion Studies on LV Function and Mass Measurements – Comparisons with Standard Filtered Backprojection Reconstructed Gated SPECT

T. Mohmed, E.P. Ficaro, J.N. Kritzman, J.R. Corbett, University of Michigan, Ann Arbor, MI

Background: Recently available 3D iterative reconstruction (3D-IR) algorithms permit important time savings during SPECT image acquisitions.  The effects of the new 3D-IR methods on the quantification of LV functional parameters are unknown.  The purpose of this study was to assess the effect of 3D-IR compared to filtered backprojection (FBP) reconstructions on LV EF, volumes and mass measurements. Methods: Using a new multi-slice SPECT-CT imaging system (SYMBIA-6), 40 patients were studied.  All patients were imaged using stress 99Tc-  Sestamibi protocol and CT based attenuation correction. 40 subjects (20 male, 20 female) undergoing either pharmacologic or treadmill stress Sestamibi imaging were analyzed.  Gated images were acquired on a Symbia T6 SPECT/CT system (Siemens Medical Solutions, Hoffman Estates, IL).  Studies were acquired for 30 sec/projection, 180 degree acquisition orbit, 128x128 matrix and 16 frame/cycle cardiac gating.  All data were processed and short axis images produced using filtered backprojection and 3D-IR using the 3D FLASH reconstruction algorithm (5 iterations and 8 subsets).  FBP images were smoothed using a Butterworth filter (order 5, cut-off 0.35).  Iteratively reconstructed data was filtered using a Gaussian 9.6 mm filter.  Quantitative results were generated using the commercially available 4DM-SPECT software (INVIA, Ann Arbor, MI).  Valve plane placement and LV myocardial contours were verified by an expert user prior to final tabulation of measurements.

Results:

	LV EF	LV EDV	LV ESV	LV mass
ED-IR	59±16	145±72	69±66	168±42
FBP	60±16	146±72	69±67	172±42
p value	ns	ns	ns	ns

Liner regression analysis demonstrated the following comparisons of LV parameters 3D-IR versus FBP measurements: EF: y =0.984x + 0.144, R2 =0.989; EDV: y =0.990x + 0.239, R2 =0.997; ESV: y =0.988x + 1.126, R2 =0.998; mass: y =1.005x - 4.742, R2 = 0.989.

Conclusions: Measurements of LV EF, volumes and mass with the 4DM-SPECT quantification algorithms are unaffected by 3D iterative compared to standard FBP SPECT reconstruction algorithms.

Notification

Acceptance or non-acceptance of abstracts will be acknowledged by e-mail (please be sure to provide an e-mail address).  Notification will be sent to submitting authors in April 2008 (August 2008 for late-breaking clinical trial abstracts) indicating whether or not the abstract has been accepted for programming. The submitting author will be asked to confirm the name and contact information of the presenter, or change it to one of the other authors (in order to comply with the two-abstract presentation limit).

Presenting authors who provide verification of trainee status will receive complimentary registration. Presenting authors, who are not trainees, will receive a 50% discount on the early registration fee.

Each presenting author will be asked to comply with the ASNC “Disclosure of Faculty Relationships Policy.” Upon abstract acceptance, the presenting author must complete a Disclosure Statement delineating the nature of the relationship and the associated commercial entity.

For abstracts that are accepted, titles and co-authors will be listed in the ASNC2008 Final Program available on site at the meeting. Full text of accepted abstracts (except for late-breaking clinical trial abstracts) will be published in the print and online versions of the Journal of Nuclear Cardiology.