scholarly journals Morphological change of cerebral aneurysm with possible pseudoaneurysm at A2/3 of the anterior cerebral artery on three-dimensional computed tomographic angiography

2020 ◽  
Vol 15 (2) ◽  
pp. 394
Author(s):  
Motohiro Nomura ◽  
Atsushi Tsukiyama ◽  
Toshiki Nozaki ◽  
Shutaro Matsumoto ◽  
Toshimasa Uekusa ◽  
...  
Keyword(s):  
Cerebral Aneurysm ◽  
Morphological Change ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Three Dimensional ◽  
Computed Tomographic Angiography ◽  
Computed Tomographic ◽  
Tomographic Angiography

scholarly journals Surgery for Ruptured Cerebral Aneurysm Using Three-dimensional Computed Tomographic Angiography.

2001 ◽  
Vol 29 (1) ◽  
pp. 53-58
Author(s):  
Kazuhiko KUROZUMI ◽  
Keisuke ONODA ◽  
Shoji TSUCHIMOTO
Keyword(s):  
Cerebral Aneurysm ◽  
Three Dimensional ◽  
Computed Tomographic Angiography ◽  
Computed Tomographic ◽  
Tomographic Angiography

scholarly journals Anomalous left anterior cerebral artery with hypoplastic right anterior cerebral artery

2018 ◽  
Vol 7 (1) ◽  
pp. 1138-1140
Author(s):  
A Mahajan ◽  
G Goel ◽  
B Das
Keyword(s):  
Computed Tomography ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Computed Tomographic Angiography ◽  
Anterior Communicating Artery ◽  
Computed Tomographic ◽  
Tomographic Angiography

We report an extremely rare anomalous variation of left anterior cerebral artery arising from the contralateral Paraclinoid Internal carotid artery with Hypoplastic right Anterior cerebral artery in a 56 years old female which was incidentally detected on computed tomographic angiography of cerebral vessels. Angiographic identification and characterisation of this anomaly is very important in developing a differential diagnosis and when planning a surgery and endovascular procedure.Keywords: Anterior cerebral artery, Paraclinoid Internal carotid artery, Anterior communicating artery Computed tomography angiography

scholarly journals Imaging in Propeller Flap Surgery

2020 ◽  
Vol 34 (03) ◽  
pp. 145-151
Author(s):  
Shimpei Ono ◽  
Hiroyuki Ohi ◽  
Rei Ogawa
Keyword(s):  
Low Cost ◽  
Three Dimensional ◽  
Duplex Sonography ◽  
Computed Tomographic Angiography ◽  
Ease Of Use ◽  
Computed Tomographic ◽  
Imaging Tool ◽  
Preoperative Mapping ◽  
Flap Design ◽  
Tomographic Angiography

AbstractSince propeller flaps are elevated as island flaps and most often nourished by a single perforator nearby the defect, it is challenging to change the flap design intraoperatively when a reliable perforator cannot be found where expected to exist. Thus, accurate preoperative mapping of perforators is essential in the safe planning of propeller flaps. Various methods have been reported so far: (1) handheld acoustic Doppler sonography (ADS), (2) color duplex sonography (CDS), (3) perforator computed tomographic angiography (P-CTA), and (4) magnetic resonance angiography (MRA). To facilitate the preoperative perforator assessment, P-CTA is currently considered as the gold standard imaging tool in revealing the three-dimensional anatomical details of perforators precisely. Nevertheless, ADS remains the most widely used tool due to its low cost, faster learning, and ease of use despite an undesirable number of false-positive results. CDS can provide hemodynamic characteristics of the perforator and is a valid and safer alternative particularly in patients in whom ionizing radiation and/or contrast exposure should be limited. Although MRA is less accurate in detecting smaller perforators of caliber less than 1.0 mm and the intramuscular course of perforators at the present time, MRA is expected to improve in the future due to the recent developments in technology, making it as accurate as P-CTA. Moreover, it provides the advantage of being radiation-free with fewer contrast reactions.

Preoperative Use of CT Angiography in Infants With Coarctation of the Aorta

2017 ◽  
Vol 8 (2) ◽  
pp. 196-202 ◽  
Author(s):  
Kirsten Rose-Felker ◽  
Joshua D. Robinson ◽  
Carl L. Backer ◽  
Cynthia K. Rigsby ◽  
Osama M. Eltayeb ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Surgical Approach ◽  
New Technology ◽  
Three Dimensional ◽  
Coarctation Of The Aorta ◽  
Computed Tomographic Angiography ◽  
Great Vessel ◽  
Z Score ◽  
Computed Tomographic ◽  
Tomographic Angiography

Background: Computed tomographic angiography (CTA) and echocardiography (echo) are used preoperatively in coarctation of the aorta to define arch hypoplasia and great vessel branching. We sought to determine differences in quantitative measurements, as well as surgical utility, between modalities. Methods: Infants (less than six months) with both CTA and echo prior to coarctation repair from 2004 to 2013 were included. Measurements were compared and correlated with surgical approach. Three surgeons reviewed de-identified images to predict approach and characterize utility. Computed tomographic angiography radiation dose was calculated. Results: Thirty-three patients were included. No differences existed in arch measurements between echo and CTA ( z-score: −2.59 vs −2.43; P = .47). No differences between modalities were seen for thoracotomy ( z-score: −2.48 [echo] vs −2.31 [CTA]; P = .48) or sternotomy ( z-score: −3.13 [echo] vs −3.08 [CTA]; P = .84). Computed tomographic angiography delineated great vessel branching pattern in two patients with equivocal echo findings ( P = .60). Surgeons rated CTA as far more useful than echo in understanding arch hypoplasia and great vessel branching in cases where CTA was done to resolve anatomical questions that remain after echo evaluation. Two of three surgeons were more likely to choose the surgical approach taken based on CTA (surgeon A, P = .02; surgeon B, P = .01). Radiation dose averaged 2.5 (1.6) mSv and trended down from 2.9 mSv (1.8 mSv; n = 20) to 1.6 mSv (0.5 mSv; n = 7) ( P = .06) with new technology. Conclusion: Although CTA and echo measurements of the aorta do not differ, CTA better delineates branching and surgeons strongly prefer it for three-dimensional arch anatomy. We recommend CTA for patients with anomalous arch branching patterns, diffuse or complex hypoplasia, or unusual arch morphology not fully elucidated by echo.

Three-dimensional bone-free computed tomographic angiography of aneurysms near the skull base using a new bone-removal application

2009 ◽  
Vol 27 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Noriaki Tomura ◽  
Takahiro Otani ◽  
Ikuo Sakuma ◽  
Satoshi Takahashi ◽  
Toshiaki Nishii ◽  
...  
Keyword(s):  
Skull Base ◽  
Three Dimensional ◽  
Computed Tomographic Angiography ◽  
Computed Tomographic ◽  
Bone Removal ◽  
Tomographic Angiography

Three-dimensional Computed Tomographic Angiography in the Preoperative Evaluation of Cerebrovascular Lesions

Neurosurgery ◽  
1995 ◽  
Vol 36 (2) ◽  
pp. 320-327 ◽  
Author(s):  
Robert E. Harbaugh ◽  
Daniel S. Schlusselberg ◽  
Robert Jeffery ◽  
Shawn Hayden ◽  
Laurence D. Cromwell ◽  
...  
Keyword(s):  
Preoperative Evaluation ◽  
Three Dimensional ◽  
Computed Tomographic Angiography ◽  
Cerebrovascular Lesions ◽  
Computed Tomographic ◽  
Tomographic Angiography

Location of intrapelvic vessels around the acetabulum assessed by three-dimensional computed tomographic angiography: prevention of vascular-related complications in total hip arthroplasty

2012 ◽  
Vol 17 (4) ◽  
pp. 397-406 ◽  
Author(s):  
Yoshiteru Kawasaki ◽  
Hiroshi Egawa ◽  
Daisuke Hamada ◽  
Shoichiro Takao ◽  
Shunji Nakano ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Three Dimensional ◽  
Computed Tomographic Angiography ◽  
Total Hip ◽  
Computed Tomographic ◽  
Tomographic Angiography
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