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Title: SU-E-I-62: Reduction of Susceptibility Artifacts by Increasing the Bandwidth (BW) and Echo Train Length (ETL)

Abstract

Purpose: The aim of this present study is to increase bandwidth (BW) and echo train length (ETL) in Proton Density Turbo Spin Echo (PD TSE) sequences with and without fat saturation (FS) as well as in Turbo Inversion Recovery Magnitude sequences (TIRM) in order to assess whether these sequences are capable of reducing susceptibility artifacts. Methods: We compared 1) TIRM coronal (COR) with the same sequence with increased both BW and ETL 2) Conventional PD TSE sagittal (SAG) with FS with an increased BW 3) Conventional PD TSE SAG without FS with an increased BW 4) Conventional PD TSE SAG without FS with increased both BW and ETL. A quantitative analysis was performed to measure the extent of the susceptibility artifacts. Furthermore, a qualitative analysis was performed by two radiologists in order to evaluate the susceptibility artifacts, image distortion and fat suppression. The depiction of cartilage, menisci, muscles, tendons and bone marrow were also qualitatively analyzed. Results: The quantitative analysis found that the modified TIRM sequence is significantly superior to the conventional one regarding the extent of the susceptibility artifacts. In the qualitative analysis, the modified TIRM sequence was superior to the corresponding conventional one in eight characteristics out ofmore » ten that were analyzed. The modified PD TSE with FS was superior to the corresponding conventional one regarding the susceptibility artifacts, image distortion and depiction of bone marrow and cartilage while achieving effective fat saturation. The modified PD TSE sequence without FS with a high (H) BW was found to be superior corresponding to the conventional one in the case of cartilage. Conclusion: Consequently, TIRM sequence with an increased BW and ETL is proposed for producing images of high quality and modified PD TSE with H BW for smaller metals, especially when FS is used.« less

Authors:
 [1]; ; ; ; ; ; ; ; ;  [2]; ;  [3]; ;  [4];  [5];  [6]
  1. University of North Carolina, Chapel Hill, NC (United States)
  2. Technological Education Institute of Athens, Athens, Attika (Greece)
  3. Animus Kyanoys Larissas Hospital, Larissa, Thessaly (Greece)
  4. IASO Thessalias Hospital, Larissa, Thessaly (Greece)
  5. University of Texas HSC SA, San Antonio, TX (United States)
  6. Cancer Therapy and Research Center, San Antonio, TX (United States)
Publication Date:
OSTI Identifier:
22494013
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Physics; Journal Volume: 42; Journal Issue: 6; Other Information: (c) 2015 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; BONE MARROW; CARTILAGE; FATS; IMAGES; INHIBITION; MUSCLES; TENDONS

Citation Formats

Mavroidis, P, Boci, N, Kostopoulos, S, Ninos, C, Glotsos, D, Oikonomou, G, Bakas, A, Roka, V, Cavouras, D, Lavdas, E, Sakkas, G, Tsagkalis, A, Chatzivasileiou, V, Batsikas, G, Papanikolaou, N, and Stathakis, S. SU-E-I-62: Reduction of Susceptibility Artifacts by Increasing the Bandwidth (BW) and Echo Train Length (ETL). United States: N. p., 2015. Web. doi:10.1118/1.4924059.
Mavroidis, P, Boci, N, Kostopoulos, S, Ninos, C, Glotsos, D, Oikonomou, G, Bakas, A, Roka, V, Cavouras, D, Lavdas, E, Sakkas, G, Tsagkalis, A, Chatzivasileiou, V, Batsikas, G, Papanikolaou, N, & Stathakis, S. SU-E-I-62: Reduction of Susceptibility Artifacts by Increasing the Bandwidth (BW) and Echo Train Length (ETL). United States. doi:10.1118/1.4924059.
Mavroidis, P, Boci, N, Kostopoulos, S, Ninos, C, Glotsos, D, Oikonomou, G, Bakas, A, Roka, V, Cavouras, D, Lavdas, E, Sakkas, G, Tsagkalis, A, Chatzivasileiou, V, Batsikas, G, Papanikolaou, N, and Stathakis, S. Mon . "SU-E-I-62: Reduction of Susceptibility Artifacts by Increasing the Bandwidth (BW) and Echo Train Length (ETL)". United States. doi:10.1118/1.4924059.
@article{osti_22494013,
title = {SU-E-I-62: Reduction of Susceptibility Artifacts by Increasing the Bandwidth (BW) and Echo Train Length (ETL)},
author = {Mavroidis, P and Boci, N and Kostopoulos, S and Ninos, C and Glotsos, D and Oikonomou, G and Bakas, A and Roka, V and Cavouras, D and Lavdas, E and Sakkas, G and Tsagkalis, A and Chatzivasileiou, V and Batsikas, G and Papanikolaou, N and Stathakis, S},
abstractNote = {Purpose: The aim of this present study is to increase bandwidth (BW) and echo train length (ETL) in Proton Density Turbo Spin Echo (PD TSE) sequences with and without fat saturation (FS) as well as in Turbo Inversion Recovery Magnitude sequences (TIRM) in order to assess whether these sequences are capable of reducing susceptibility artifacts. Methods: We compared 1) TIRM coronal (COR) with the same sequence with increased both BW and ETL 2) Conventional PD TSE sagittal (SAG) with FS with an increased BW 3) Conventional PD TSE SAG without FS with an increased BW 4) Conventional PD TSE SAG without FS with increased both BW and ETL. A quantitative analysis was performed to measure the extent of the susceptibility artifacts. Furthermore, a qualitative analysis was performed by two radiologists in order to evaluate the susceptibility artifacts, image distortion and fat suppression. The depiction of cartilage, menisci, muscles, tendons and bone marrow were also qualitatively analyzed. Results: The quantitative analysis found that the modified TIRM sequence is significantly superior to the conventional one regarding the extent of the susceptibility artifacts. In the qualitative analysis, the modified TIRM sequence was superior to the corresponding conventional one in eight characteristics out of ten that were analyzed. The modified PD TSE with FS was superior to the corresponding conventional one regarding the susceptibility artifacts, image distortion and depiction of bone marrow and cartilage while achieving effective fat saturation. The modified PD TSE sequence without FS with a high (H) BW was found to be superior corresponding to the conventional one in the case of cartilage. Conclusion: Consequently, TIRM sequence with an increased BW and ETL is proposed for producing images of high quality and modified PD TSE with H BW for smaller metals, especially when FS is used.},
doi = {10.1118/1.4924059},
journal = {Medical Physics},
number = 6,
volume = 42,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2015},
month = {Mon Jun 15 00:00:00 EDT 2015}
}