A fast Look-Locker method for T 1 mapping of the head and neck region

Toru Chikui, Kenji Tokumori, Ryosuke Zeze, Tomoko Shiraishi, Takahiro Ichihara, Masamitsu Hatakenaka, Kazunori Yoshiura

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Objective: A sequence for T1 relaxation time measurements that allows a high-resolution image to be obtained within a short acquisition time is described. Its application to the orofacial region is investigated. Methods: The sequence is based on the Look-Locker (LL) method and employs a magnetization-preparation pulse prior to data acquisition, with either a turbo-field echo (TFE) or turbo-field echo echo-planar imaging (TFEPI) sequence. We applied the multiple LL sequence by synchronizing the data acquisition with the virtual electrocardiogram. T1 results from the LL sequence were compared with those from the inversion recovery (IR) sequence. In an in vitro study, we evaluated the T1 maps of contrast medium at different concentrations. In an in vivo study, we evaluated the T1 maps in seven volunteers. Results: In the in vitro study, the correlation between the T1 values obtained from the LL sequence and those from the IR sequence was high, with an R 2 of more than 0.99. For T1 values between 200 and 1,500 ms, the difference between the two methods was less than 7%. In the in vivo study, a high correlation was observed between the T1 values from the IR sequence and those from the LL sequence. The scan duration for the LL sequence was less than 3 min. Conclusion: Our method, based on the LL sequence, was found to be clinically useful for producing a T1 map.

元の言語英語
ページ(範囲)22-29
ページ数8
ジャーナルOral Radiology
25
発行部数1
DOI
出版物ステータス出版済み - 6 1 2009

Fingerprint

Sequence Inversion
Neck
Head
Echo-Planar Imaging
Contrast Media
Pulse
Volunteers
Electrocardiography
In Vitro Techniques

All Science Journal Classification (ASJC) codes

  • Dentistry (miscellaneous)
  • Radiology Nuclear Medicine and imaging

これを引用

A fast Look-Locker method for T 1 mapping of the head and neck region. / Chikui, Toru; Tokumori, Kenji; Zeze, Ryosuke; Shiraishi, Tomoko; Ichihara, Takahiro; Hatakenaka, Masamitsu; Yoshiura, Kazunori.

:: Oral Radiology, 巻 25, 番号 1, 01.06.2009, p. 22-29.

研究成果: ジャーナルへの寄稿記事

Chikui, T, Tokumori, K, Zeze, R, Shiraishi, T, Ichihara, T, Hatakenaka, M & Yoshiura, K 2009, 'A fast Look-Locker method for T 1 mapping of the head and neck region', Oral Radiology, 巻. 25, 番号 1, pp. 22-29. https://doi.org/10.1007/s11282-009-0005-1
Chikui T, Tokumori K, Zeze R, Shiraishi T, Ichihara T, Hatakenaka M その他. A fast Look-Locker method for T 1 mapping of the head and neck region. Oral Radiology. 2009 6 1;25(1):22-29. https://doi.org/10.1007/s11282-009-0005-1
Chikui, Toru ; Tokumori, Kenji ; Zeze, Ryosuke ; Shiraishi, Tomoko ; Ichihara, Takahiro ; Hatakenaka, Masamitsu ; Yoshiura, Kazunori. / A fast Look-Locker method for T 1 mapping of the head and neck region. :: Oral Radiology. 2009 ; 巻 25, 番号 1. pp. 22-29.
@article{b2c676c60d68410f942378c15c642073,
title = "A fast Look-Locker method for T 1 mapping of the head and neck region",
abstract = "Objective: A sequence for T1 relaxation time measurements that allows a high-resolution image to be obtained within a short acquisition time is described. Its application to the orofacial region is investigated. Methods: The sequence is based on the Look-Locker (LL) method and employs a magnetization-preparation pulse prior to data acquisition, with either a turbo-field echo (TFE) or turbo-field echo echo-planar imaging (TFEPI) sequence. We applied the multiple LL sequence by synchronizing the data acquisition with the virtual electrocardiogram. T1 results from the LL sequence were compared with those from the inversion recovery (IR) sequence. In an in vitro study, we evaluated the T1 maps of contrast medium at different concentrations. In an in vivo study, we evaluated the T1 maps in seven volunteers. Results: In the in vitro study, the correlation between the T1 values obtained from the LL sequence and those from the IR sequence was high, with an R 2 of more than 0.99. For T1 values between 200 and 1,500 ms, the difference between the two methods was less than 7{\%}. In the in vivo study, a high correlation was observed between the T1 values from the IR sequence and those from the LL sequence. The scan duration for the LL sequence was less than 3 min. Conclusion: Our method, based on the LL sequence, was found to be clinically useful for producing a T1 map.",
author = "Toru Chikui and Kenji Tokumori and Ryosuke Zeze and Tomoko Shiraishi and Takahiro Ichihara and Masamitsu Hatakenaka and Kazunori Yoshiura",
year = "2009",
month = "6",
day = "1",
doi = "10.1007/s11282-009-0005-1",
language = "English",
volume = "25",
pages = "22--29",
journal = "Oral Radiology",
issn = "0911-6028",
publisher = "Springer Japan",
number = "1",

}

TY - JOUR

T1 - A fast Look-Locker method for T 1 mapping of the head and neck region

AU - Chikui, Toru

AU - Tokumori, Kenji

AU - Zeze, Ryosuke

AU - Shiraishi, Tomoko

AU - Ichihara, Takahiro

AU - Hatakenaka, Masamitsu

AU - Yoshiura, Kazunori

PY - 2009/6/1

Y1 - 2009/6/1

N2 - Objective: A sequence for T1 relaxation time measurements that allows a high-resolution image to be obtained within a short acquisition time is described. Its application to the orofacial region is investigated. Methods: The sequence is based on the Look-Locker (LL) method and employs a magnetization-preparation pulse prior to data acquisition, with either a turbo-field echo (TFE) or turbo-field echo echo-planar imaging (TFEPI) sequence. We applied the multiple LL sequence by synchronizing the data acquisition with the virtual electrocardiogram. T1 results from the LL sequence were compared with those from the inversion recovery (IR) sequence. In an in vitro study, we evaluated the T1 maps of contrast medium at different concentrations. In an in vivo study, we evaluated the T1 maps in seven volunteers. Results: In the in vitro study, the correlation between the T1 values obtained from the LL sequence and those from the IR sequence was high, with an R 2 of more than 0.99. For T1 values between 200 and 1,500 ms, the difference between the two methods was less than 7%. In the in vivo study, a high correlation was observed between the T1 values from the IR sequence and those from the LL sequence. The scan duration for the LL sequence was less than 3 min. Conclusion: Our method, based on the LL sequence, was found to be clinically useful for producing a T1 map.

AB - Objective: A sequence for T1 relaxation time measurements that allows a high-resolution image to be obtained within a short acquisition time is described. Its application to the orofacial region is investigated. Methods: The sequence is based on the Look-Locker (LL) method and employs a magnetization-preparation pulse prior to data acquisition, with either a turbo-field echo (TFE) or turbo-field echo echo-planar imaging (TFEPI) sequence. We applied the multiple LL sequence by synchronizing the data acquisition with the virtual electrocardiogram. T1 results from the LL sequence were compared with those from the inversion recovery (IR) sequence. In an in vitro study, we evaluated the T1 maps of contrast medium at different concentrations. In an in vivo study, we evaluated the T1 maps in seven volunteers. Results: In the in vitro study, the correlation between the T1 values obtained from the LL sequence and those from the IR sequence was high, with an R 2 of more than 0.99. For T1 values between 200 and 1,500 ms, the difference between the two methods was less than 7%. In the in vivo study, a high correlation was observed between the T1 values from the IR sequence and those from the LL sequence. The scan duration for the LL sequence was less than 3 min. Conclusion: Our method, based on the LL sequence, was found to be clinically useful for producing a T1 map.

UR - http://www.scopus.com/inward/record.url?scp=67650609881&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67650609881&partnerID=8YFLogxK

U2 - 10.1007/s11282-009-0005-1

DO - 10.1007/s11282-009-0005-1

M3 - Article

AN - SCOPUS:67650609881

VL - 25

SP - 22

EP - 29

JO - Oral Radiology

JF - Oral Radiology

SN - 0911-6028

IS - 1

ER -