User profiles for "author:Masaaki Shojima"

Masaaki SHOJIMA

Saitama Medical University
Verified email at umin.ac.jp
Cited by 2500

Magnitude and role of wall shear stress on cerebral aneurysm: computational fluid dynamic study of 20 middle cerebral artery aneurysms

M Shojima, M Oshima, K Takagi, R Torii, M Hayakawa… - Stroke, 2004 - Am Heart Assoc
Background and Purpose—Wall shear stress (WSS) is one of the main pathogenic factors in
the development of saccular cerebral aneurysms. The magnitude and distribution of the …

Role of the bloodstream impacting force and the local pressure elevation in the rupture of cerebral aneurysms

M Shojima, M Oshima, K Takagi, R Torii, K Nagata… - Stroke, 2005 - Am Heart Assoc
Background and Purpose—Inertial force of the bloodstream results in the local elevation of
intravascular pressure secondary to flow impact. Previous studies suggest that this …

[HTML][HTML] Real-world variability in the prediction of intracranial aneurysm wall shear stress: the 2015 international aneurysm CFD challenge

K Valen-Sendstad, AW Bergersen… - Cardiovascular …, 2018 - Springer
Purpose Image-based computational fluid dynamics (CFD) is widely used to predict
intracranial aneurysm wall shear stress (WSS), particularly with the goal of improving rupture …

Multiple aneurysms anatomy challenge 2018 (MATCH): phase I: segmentation

P Berg, S Voß, S Saalfeld, G Janiga… - Cardiovascular …, 2018 - Springer
Purpose Advanced morphology analysis and image-based hemodynamic simulations are
increasingly used to assess the rupture risk of intracranial aneurysms (IAs). However, the …

A new strategic neurosurgical planning tool for brainstem cavernous malformations using interactive computer graphics with multimodal fusion images

T Kin, H Nakatomi, M Shojima, M Tanaka, K Ino… - Journal of …, 2012 - thejns.org
Object In this study, the authors used preoperative simulation employing 3D computer
graphics (interactive computer graphics) to fuse all imaging data for brainstem cavernous …

Multiple Aneurysms AnaTomy CHallenge 2018 (MATCH)—phase II: rupture risk assessment

P Berg, S Voß, G Janiga, S Saalfeld… - International journal of …, 2019 - Springer
Purpose Assessing the rupture probability of intracranial aneurysms (IAs) remains
challenging. Therefore, hemodynamic simulations are increasingly applied toward …

[HTML][HTML] Efficacy of a novel augmented reality navigation system using 3D computer graphic modeling in endoscopic transsphenoidal surgery for sellar and parasellar …

Y Goto, A Kawaguchi, Y Inoue, Y Nakamura, Y Oyama… - Cancers, 2023 - mdpi.com
Simple Summary In endoscopic transsphenoidal skull base surgery, it is often difficult to
accurately determine the location of a tumor and its surroundings on imaging because the …

Role of Gamma Knife surgery in the treatment of intracranial dural arteriovenous fistulas

S Hanakita, T Koga, M Shin, M Shojima, H Igaki… - Journal of …, 2012 - thejns.org
Object The goal of this study was to assess the efficacy of Gamma Knife surgery (GKS) in the
management of dural arteriovenous fistulas (dAVFs). Methods The authors performed a …

Size is the most important predictor of aneurysm rupture among multiple cerebral aneurysms: post hoc subgroup analysis of unruptured cerebral aneurysm study …

M Shojima, A Morita, H Nakatomi, S Tominari - Neurosurgery, 2018 - journals.lww.com
BACKGROUND Multiple cerebral aneurysms are encountered in approximately 15% to 35%
of patients harboring unruptured cerebral aneurysms. It would be of clinical value to …

Unruptured intracranial aneurysms: current perspectives on the origin and natural course, and quest for standards in the management strategy

A Morita, T Kimura, M Shojima… - Neurologia medico …, 2010 - jstage.jst.go.jp
Unruptured intracranial aneurysms are relatively common, and can cause subarachnoid
hemorrhage. Management of unruptured intracranial aneurysms requires knowledge of the …