Usefulness of diffusion‐weighted MRI with echo‐planar technique in the evaluation of cellularity in gliomas
…, I Ikushima, Y Shigematu, T Hirai… - Journal of Magnetic …, 1999 - Wiley Online Library
The purpose of this study was to evaluate the utility of diffusion‐weighted magnetic resonance
imaging (MRI) with echo‐planar imaging (EPI) technique in depicting the tumor cellularity …
imaging (MRI) with echo‐planar imaging (EPI) technique in depicting the tumor cellularity …
Diffusion-weighted imaging of radiation-induced brain injury for differentiation from tumor recurrence
C Asao, Y Korogi, M Kitajima, T Hirai… - American Journal …, 2005 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Differentiation between tumor recurrence and treatment-related
brain injury is often difficult with conventional MRI. We hypothesized that the diffusion-…
brain injury is often difficult with conventional MRI. We hypothesized that the diffusion-…
Clinical quantitative susceptibility mapping (QSM): biometal imaging and its emerging roles in patient care
Quantitative susceptibility mapping (QSM) has enabled magnetic resonance imaging (MRI)
of tissue magnetic susceptibility to advance from simple qualitative detection of hypointense …
of tissue magnetic susceptibility to advance from simple qualitative detection of hypointense …
Prospective evaluation of suspected stenoocclusive disease of the intracranial artery: combined MR angiography and CT angiography compared with digital …
T Hirai, Y Korogi, K Ono, M Nagano… - American Journal …, 2002 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: MR angiography is primarily and increasingly used to
assess intracranial arterial stenoocclusion. However, MR angiography can cause …
assess intracranial arterial stenoocclusion. However, MR angiography can cause …
Monitoring therapeutic responses of primary bone tumors by diffusion-weighted image: initial results
…, Y Nakayama, O Shimomura, M Kitajima, T Hirai… - European …, 2006 - Springer
The purpose of our study was to investigate whether quantitative diffusion-weighted images
(DWI) were useful for monitoring the therapeutic response of primary bone tumors. We …
(DWI) were useful for monitoring the therapeutic response of primary bone tumors. We …
Grading Astrocytic Tumors by Using Apparent Diffusion Coefficient Parameters: Superiority of a One- versus Two-Parameter Pilot Method1
R Murakami, T Hirai, T Sugahara, H Fukuoka, R Toya… - Radiology, 2009 - pubs.rsna.org
Purpose: To assess the utility of both minimum apparent diffusion coefficients (ADCs) and
ADC difference values for grading astrocytic tumors at magnetic resonance imaging. Materials …
ADC difference values for grading astrocytic tumors at magnetic resonance imaging. Materials …
Role of diffusion-weighted imaging in the diagnosis of gynecological diseases
T Namimoto, K Awai, T Nakaura, Y Yanaga, T Hirai… - European …, 2009 - Springer
Recent technical advances in diffusion-weighted imaging (DWI) greatly enhanced the clinical
value of magnetic resonance imaging (MRI) of the body. DWI can provide excellent tissue …
value of magnetic resonance imaging (MRI) of the body. DWI can provide excellent tissue …
Combined use of T2-weighted and diffusion-weighted 3-T MR imaging for differentiating uterine sarcomas from benign leiomyomas
…, Y Yamashita, K Awai, T Nakaura, Y Yanaga, T Hirai… - European …, 2009 - Springer
The objective of our study was to compare diffusion-weighted imaging (DWI) alone and DWI
combined with T2-weighted MRI for the differentiation of uterine sarcomas from benign …
combined with T2-weighted MRI for the differentiation of uterine sarcomas from benign …
Malignant Supratentorial Astrocytoma Treated with Postoperative Radiation Therapy: Prognostic Value of Pretreatment Quantitative Diffusion-weighted MR Imaging1
R Murakami, T Sugahara, H Nakamura, T Hirai… - Radiology, 2007 - pubs.rsna.org
Purpose: To retrospectively evaluate whether the minimum apparent diffusion coefficient (ADC)
of the tumor seen on pretreatment magnetic resonance (MR) images is of prognostic …
of the tumor seen on pretreatment magnetic resonance (MR) images is of prognostic …
Impact of FDG-PET/CT imaging on nodal staging for head-and-neck squamous cell carcinoma
R Murakami, H Uozumi, T Hirai, R Nishimura… - International Journal of …, 2007 - Elsevier
Purpose: To evaluate the impact of 18F-fluorodeoxyglucose positron emission tomography/computed
tomography (FDG-PET/CT) imaging on nodal staging for head-and-neck …
tomography (FDG-PET/CT) imaging on nodal staging for head-and-neck …