TY - JOUR
T1 - High-resolution systolic T1 mapping with compressed sensing for the evaluation of the right ventricle
T2 - a phantom and volunteer study
AU - Nishigake, Daisuke
AU - Yamasaki, Yuzo
AU - Yamamura, Kenichiro
AU - Funatsu, Ryohei
AU - Wada, Tatsuhiro
AU - Oga, Masahiro
AU - Kobayashi, Koji
AU - Kato, Toyoyuki
AU - Ishigami, Kousei
N1 - Funding Information:
This work was supported by the research grant from KONICAMINOLTA, the Japan Society for the Promotion of Science (JSPS) KAKENHI (20K16728), the research grant of the Japanese Radiological Society from Bayer (KJ-2019-2) and Konica Minolta Imaging Science Encouragement Award from Konica Minolta Science and Technology Foundation.
Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer Nature B.V.
PY - 2022/10
Y1 - 2022/10
N2 - To investigate the usefulness of high-resolution systolic T1 mapping using compressed sensing for right ventricular (RV) evaluation. Phantoms and normal volunteers were scanned at 3 T by using a high-resolution (HR) modified look-locker inversion recovery (MOLLI) pulse sequence and a conventional MOLLI pulse sequence. The T1 values of the left ventricular (LV) and RV myocardium and blood pool were measured for each sequence. T1 values of HR-MOLLI and MOLLI sequences were compared in the LV myocardium, blood pool, and RV myocardium. The T1 values of HR-MOLLI and MOLLI showed good agreement in both phantoms and the LV myocardium and blood pool of volunteers. However, there was a significant difference between HR-MOLLI and MOLLI in the RV myocardium (1258 ± 52 ms vs. 1327 ± 73 ms; P = 0.0005). No significant difference was observed between the T1 value of RV and that of LV (1217 ± 32 ms) in HR-MOLLI, whereas the T1 value of RV was significantly higher than that of LV in MOLLI (P < 0.0001). The interclass correlation coefficients of intraobserver variabilities from HR-MOLLI and MOLLI were 0.919 and 0.804, respectively, and the interobserver variabilities from HR-MOLLI and MOLLI were 0.838 and 0.848, respectively. Assessment of RV myocardium by using HR systolic T1 mapping was superior to the conventional MOLLI sequence in terms of accuracy and reproducibility.
AB - To investigate the usefulness of high-resolution systolic T1 mapping using compressed sensing for right ventricular (RV) evaluation. Phantoms and normal volunteers were scanned at 3 T by using a high-resolution (HR) modified look-locker inversion recovery (MOLLI) pulse sequence and a conventional MOLLI pulse sequence. The T1 values of the left ventricular (LV) and RV myocardium and blood pool were measured for each sequence. T1 values of HR-MOLLI and MOLLI sequences were compared in the LV myocardium, blood pool, and RV myocardium. The T1 values of HR-MOLLI and MOLLI showed good agreement in both phantoms and the LV myocardium and blood pool of volunteers. However, there was a significant difference between HR-MOLLI and MOLLI in the RV myocardium (1258 ± 52 ms vs. 1327 ± 73 ms; P = 0.0005). No significant difference was observed between the T1 value of RV and that of LV (1217 ± 32 ms) in HR-MOLLI, whereas the T1 value of RV was significantly higher than that of LV in MOLLI (P < 0.0001). The interclass correlation coefficients of intraobserver variabilities from HR-MOLLI and MOLLI were 0.919 and 0.804, respectively, and the interobserver variabilities from HR-MOLLI and MOLLI were 0.838 and 0.848, respectively. Assessment of RV myocardium by using HR systolic T1 mapping was superior to the conventional MOLLI sequence in terms of accuracy and reproducibility.
UR - http://www.scopus.com/inward/record.url?scp=85128882922&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85128882922&partnerID=8YFLogxK
U2 - 10.1007/s10554-022-02622-y
DO - 10.1007/s10554-022-02622-y
M3 - Article
C2 - 37726459
AN - SCOPUS:85128882922
SN - 1569-5794
VL - 38
SP - 2219
EP - 2225
JO - International Journal of Cardiovascular Imaging
JF - International Journal of Cardiovascular Imaging
IS - 10
ER -