scholarly journals The evaluation of three-dimensional anatomy of the superficial temporal artery using volume rendering technique

2014 ◽  
Author(s):  
Enis Kuruoglu ◽  
Cengiz Cokluk ◽  
Abdullah Hilmi Marangoz ◽  
Kerameddin Aydin
Keyword(s):  
Volume Rendering ◽  
Superficial Temporal Artery ◽  
Three Dimensional ◽  
Temporal Artery ◽  
Volume Rendering Technique

A Volume-Rendering Technique for Integrated Three-Dimensional display of MR and PET Data

1990 ◽  
pp. 379-397 ◽  
Author(s):  
Xiaoping Hu ◽  
Kim K. Tan ◽  
David N. Levin ◽  
Charles A. Pelizzari ◽  
George T. Y. Chen
Keyword(s):  
Volume Rendering ◽  
Three Dimensional ◽  
Three Dimensional Display ◽  
Volume Rendering Technique

scholarly journals The role of cinematic rendering in pre-operative planning of a thoracodorsal artery perforator flap (TDAP) phalloplasty: a case study

2019 ◽  
Vol 5 (2) ◽  
pp. 20180084
Author(s):  
Carolina Lugo-Fagundo ◽  
Hannah Ahn ◽  
Devin O’Brien-Coon ◽  
Elliot K. Fishman
Keyword(s):  
Volume Rendering ◽  
Three Dimensional ◽  
Perforator Flap ◽  
Muscle Involvement ◽  
Thoracodorsal Artery ◽  
Operative Planning ◽  
Flap Design ◽  
Tdap Flap ◽  
Artery Perforator ◽  
Volume Rendering Technique

The thoracodorsal artery perforator (TDAP) flap is a muscle-sparing skin and fat flap that requires precise intramuscular dissection of the thoracodorsal artery perforators in the axillary region. Pre-operative image-based treatment planning is a crucial part of flap design. In this article, we discuss the first-ever reported use of the cinematic volume rendering technique (CVRT) to evaluate the thoracodorsal artery for a TDAP flap phalloplasty in a 49-year-old transgender patient. Cinematic volume rendering technique uses light maps to generate photo-realistic three-dimensional images of the thoracodorsal artery and its perforators. These images aid the surgeon in evaluating optimal perforators and latissimus dorsi muscle involvement for more efficient flap design.

A new approach of three-dimensional guidance in paediatric cath lab: segmented and tessellated heart models for cardiovascular interventions in CHD

2018 ◽  
Vol 28 (5) ◽  
pp. 661-667 ◽  
Author(s):  
Nicole Ehret ◽  
Muhannad Alkassar ◽  
Sven Dittrich ◽  
Robert Cesnjevar ◽  
André Rüffer ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Image Fusion ◽  
Volume Rendering ◽  
Three Dimensional ◽  
Fluoroscopy Time ◽  
Dimensional Image ◽  
Medical Software ◽  
Dimensional Models ◽  
Three Dimensional Models ◽  
Volume Rendering Technique

AbstractBackgroundOptimal imaging is essential for catheter-based interventions in CHD. The three-dimensional models in volume-rendering technique currently in use are not standardised. This paper investigates the feasibility and impact of novel three-dimensional guidance with segmented and tessellated three-dimensional heart models in catheterisation of CHD. In addition, a nearly radiation-free two- to three-dimensional registration and a biplane overlay were used.Methods and resultsWe analysed 60 consecutive cases in which segmented tessellated three-dimensional heart models were merged with live fluoroscopy images and aligned using the tracheal bifurcation as a fiducial mark. The models were generated from previous MRI or CT by dedicated medical software. We chose the stereo-lithography format, as this promises advantage over volume-rendering-technique models regarding visualisation. Prospects, potential benefits, and accuracy of the two- to three-dimensional registration were rated separately by two paediatric interventionalists on a five-point Likert scale. Fluoroscopy time, radiation dose, and contrast dye consumption were evaluated. Over a 10-month study period, two- to three-dimensional image fusion was applied to 60 out of 354 cases. Of the 60 catheterisations, 73.3% were performed in the context of interventions. The accuracy of two- to three-dimensional registration was sufficient in all cases. Three-dimensional guidance was rated superior to conventional biplane imaging in all 60 cases. We registered significantly smaller amounts of used contrast dye (p<0.01), lower levels of radiation dose (p<0.02), and less fluoroscopy time (p<0.01) during interventions concerning the aortic arch compared with a control group.ConclusionsTwo- to three-dimensional image fusion can be applied successfully in most catheter-based interventions of CHD. Meshes in stereo-lithography format are accurate and base for standardised and reproducible three-dimensional models.

scholarly journals Prediction of Cerebral Hyperperfusion after Superficial Temporal Artery-Middle Cerebral Artery Anastomosis by Three-Dimensional-Time-of-Flight Magnetic Resonance Angiography in Adult Patients with Moyamoya Disease

2020 ◽  
Vol 49 (4) ◽  
pp. 396-403
Author(s):  
Taketo Nishizawa ◽  
Miki Fujimura ◽  
Masahito Katsuki ◽  
Shunji Mugikura ◽  
Ryosuke Tashiro ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Signal Intensity ◽  
Superficial Temporal Artery ◽  
Three Dimensional ◽  
Temporal Artery ◽  
Cerebral Hyperperfusion ◽  
Revascularization Surgery

Introduction: Superficial temporal artery (STA)-middle cerebral artery (MCA) anastomosis is an effective surgical procedure for adult patients with moyamoya disease (MMD) and is known to have the potential to prevent cerebral ischemia and/or hemorrhagic stroke. Cerebral hyperperfusion (CHP) syndrome is one of the serious complications of this procedure that can result in deleterious outcomes, such as delayed intracerebral hemorrhage, but the prediction of CHP before revascularization surgery remains challenging. The present study evaluated the diagnostic value of preoperative three-dimensional (3D)-time-of-flight (TOF) magnetic resonance angiography (MRA) for predicting CHP after STA-MCA anastomosis for MMD. Materials and Methods: The signal intensity of the peripheral portion of the intracranial major arteries, such as the anterior cerebral artery (ACA), MCA, and posterior cerebral artery (PCA) ipsilateral to STA-MCA anastomosis, on preoperative MRA was graded (0–2 in each vessel) according to the ability to visualize each vessel on 97 affected hemispheres in 83 adult MMD patients. Local cerebral blood flow (CBF) at the site of anastomosis was quantitatively measured by N-isopropyl-p-[123I]-iodoamphetamine single-photon emission computed tomography 1 and 7 days after surgery, in addition to the preoperative CBF value at the corresponding area. Then, we investigated the correlation between the preoperative MRA score and the development of CHP. Results: The CHP phenomenon 1 day after STA-MCA anastomosis (local CBF increase over 150% compared with the preoperative value) was evident in 27 patients (27/97 hemispheres; 28%). Among them, 8 (8 hemispheres) developed CHP syndrome. Multivariate analysis revealed that the hemispheric MRA score (0–6), the summed ACA, MCA, and PCA scores for the affected hemisphere, was significantly associated with the development of CHP syndrome (p = 0.011). The hemispheric MRA score was also significantly correlated with the CHP phenomenon, either symptomatic or asymptomatic (p < 0.001). Conclusion: The signal intensity of the intracranial major arteries, including the ACA, MCA, and PCA, on preoperative 3D-TOF MRA may identify adult MMD patients at higher risk for CHP after direct revascularization surgery.

scholarly journals Advantages of petrosectomy for superficial temporal artery to superior cerebellar artery bypass based on three-dimensional distance measurements using cadaver heads

2021 ◽  
Author(s):  
Kenji Uda ◽  
Kuniaki Tanahashi ◽  
Takashi Mamiya ◽  
Fumiaki Kanamori ◽  
Kinya Yokoyama ◽  
...  
Keyword(s):  
Superficial Temporal Artery ◽  
Three Dimensional ◽  
Major Axis ◽  
Temporal Artery ◽  
Minor Axis ◽  
Field Size ◽  
Superior Cerebellar Artery ◽  
Operative Field ◽  
Axis Length ◽  
Optimal Approach

AbstractSuperficial temporal artery (STA) to superior cerebellar artery (SCA) bypass is usually performed via the subtemporal approach (StA), anterior transpetrosal approach (ApA), or combined petrosal approach (CpA), but no study has yet reported a quantitative comparison of the operative field size provided by each approach, and the optimal approach is unclear. The objective of this study is to establish evidence for selecting the approach by using cadaver heads to measure the three-dimensional distances that represent the operative field size for STA–SCA bypass. Ten sides of 10 cadaver heads were used to perform the four approaches: StA, ApA with and without zygomatic arch osteotomy (ApA-ZO− and ApA-ZO+), and CpA. For each approach, the major-axis length and the minor-axis length at the anastomosis site (La-A and Li-A), the major-axis length and the minor-axis length at the brain surface (La-B and Li-B), the depth from the brain surface to the anastomosis site (Dp), and the operating angles of the major axis and the minor axis (OAa and OAi) were measured. Shallower Dp and wider operating angle were obtained in the order CpA, ApA-ZO+, ApA-ZO−, and StA. In all parameters, ApA-ZO− extended the operative field more than StA. ApA-ZO+ extended La-B and OAa more than ApA-ZO−, whereas it did not contribute to Dp and OAi. CpA significantly decreased Dp, and widened OAa and OAi more than ApA-ZO+. ApA and CpA greatly expanded the operative field compared with StA. These results provide criteria for selecting the optimal approach for STA-SCA bypass in light of an individual surgeon’s anastomosis skill level.

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