Comparison of 2D and 3D digital subtraction angiography in evaluation of intracranial aneurysms

…, K Nakashima, S Hamatake, S Honda… - American Journal …, 2002 - Am Soc Neuroradiology
… Fourth, the patient’s motion artifacts produced more severe image degradation. Inherently, …
more affected by the patient’s motion. When a patient’s motion is marked, we recommended …

Three-dimensional FISP imaging in the evaluation of carotid cavernous fistula: comparison with contrast-enhanced CT and spin-echo MR.

T Hirai, Y Korogi, S Hamatake… - American journal …, 1998 - Am Soc Neuroradiology
PURPOSE The purpose of this study was to assess the value of three-dimensional fast imaging
with steady-state precession (FISP) MR sequences relative to contrast-enhanced CT and …

MR changes in the calcarine area resulting from retinal degeneration.

…, Y Korogi, T Hirai, S Hamatake… - American journal …, 1997 - Am Soc Neuroradiology
PURPOSE To study MR images for atrophic changes in the calcarine area resulting from
retinal degeneration. METHODS MR images from nine patients with retinal degeneration …

Superselective intraarterial infusion of cisplatin for squamous cell carcinoma of the mouth: preliminary clinical experience.

…, T Hirai, R Nishimura, S Hamatake… - … American journal of …, 1995 - Am Roentgen Ray Soc
The purpose of this study was to assess the initial clinical response to superselective
intraarterial infusion of cisplatin for treating stage III and stage IV squamous cell carcinoma of the …

T2 shortening in the motor cortex: effect of aging and cerebrovascular diseases.

T Hirai, Y Korogi, Y Sakamoto, S Hamatake, I Ikushima… - Radiology, 1996 - pubs.rsna.org
PURPOSE: To evaluate the effect of aging and cerebrovascular diseases on T2 shortening in
the motor cortex at magnetic resonance (MR) imaging. MATERIALS AND METHODS: High-…

Comparison of HASTE and segmented-HASTE sequences with a T2-weighted fast spin-echo sequence in the screening evaluation of the brain.

…, Y Korogi, T Hirai, S Hamatake… - … American journal of …, 1997 - Am Roentgen Ray Soc
… spin-echo, HASTE, and s-HASTE sequences were compared prospectively … with the HASTE
sequence was more severe than that with the s-HASTE … lesions compared with the s-HASTE …

Stages III and IV squamous cell carcinoma of the mouth: three-year experience with superselective intraarterial chemotherapy using cisplatin prior to definitive …

T Hirai, Y Korogi, S Hamatake, R Nishimura… - Cardiovascular and …, 1999 - Springer
Purpose: This study was designed to assess the 3-year experience with superselective
intraarterial chemotherapy prior to definitive treatment for stages III and IV squamous cell …

Dynamic MRI of meningiomas and schwannomas: is differential diagnosis possible?

I Ikushima, Y Korogi, J Kuratsu, T Hirai, S Hamatake… - Neuroradiology, 1997 - Springer
We studied 23 patients with meningiomas and 14 with schwannomas using dynamic spin-echo
(TR/TE 200/15 ms) MRI. Histologically the meningiomas were classified according to the …

Varicella–zoster virus myelitis—serial MR findings

T Hirai, Y Korogi, S Hamatake, I Ikushima… - The British Journal of …, 1996 - birpublications.org
The authors describe a 32-year-old male in whom herpes zoster of the left upper extremity
was complicated by the development of cervical myelitis. Contrast enhancement and …

Chordomas of the skull base: dynamic MRI

I Ikushima, Y Korogi, T Hirai, S Hamatake… - Journal of computer …, 1996 - journals.lww.com
… Serial imaging was performed every 30 s for 240 s after a rapid injection of gadopenetate
dimeglumine (0.1 mmol/kg). The contrast material enhancement ratio (CER) was analyzed. …