• Title/Summary/Keyword: Three-dimensional CT angiography

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Traumatic Pseudoaneurysm of the Superficial Temporal artery Diagnosed by 3-dimensional CT Angiography

  • Park, In-Ho;Kim, Hyeun-Sung;Park, Sung-Kuen;Kim, Seok-Won
    • Journal of Korean Neurosurgical Society
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    • v.43 no.4
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    • pp.209-211
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    • 2008
  • Pseudoaneurysm arising from the superficial temporal artery (STA) is a rare and potentially critical cause of palpable mass. Most pseudoaneurysms form as a result of blunt trauma and present as painless, pulsatile mass that may be associated with pathologic finding and enlarged size. We report a rare case of pseudoaneurysm arising from STA caused by blunt injury and diagnosed by 3-dimensional computed tomography (CT) angiography.

Usefullness with 3D CT Angiography in Microsurgical Reconstruction (미세수술을 이용한 하지의 재건시 삼차원 컴퓨터 혈관조영술의 유용성)

  • Sung, Yong Duck;Kim, Hyo Heon
    • Archives of Plastic Surgery
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    • v.33 no.2
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    • pp.175-180
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    • 2006
  • Preoperative angiography is frequently used in the planning of microsurgical reconstruction for identification of vascular abnormality that influence the planning of operation. But, recently 3D CT angiography is considered as new technique that can provide detailed information about vascular anatomy as well as soft and bony tissue without the risks of invasive angiography. 3D CT angiograms were performed in 19 patients before microsurgical reconstruction for the lower extremity and hand between May of 2003 and Oct of 2004. Sixteen of the studies were of the donor site and all of 19 studies were of the recipient site. No complications were found from the 3D CT angiograms. In one case of the bone exposed open wound, the injury of anterior tibial artery was identified and the zone of injury was adequately demonstrated. With the improvement in quality of CT imaging, 3D CT angiograms may provide a favorable alternative to invasive angiography. It is capable of providing high-resolution, three dimensional vascular imaging without the need for arterial puncture and prolonged post-procedure observation. The relation among blood vessels, bones, and soft tissue is well demonstrated in 3D CT angiogram. Also The acquisition time and examination cost were considerably lower in comparison with invasive angiography. In conclusion, this study demonstrates that 3D CT angiography may provide accurate, safe, and cost-effective preoperative imaging. The 3D CT angiography with relatively low morbidity, low cost, ease of image acquisition can have an broader role in microsurgical reconstructive surgery.

Diagnosis of Persistent Primitive Olfactory Artery Using Computed Tomography Angiography

  • Kim, Myoung-Soo;Lee, Ghi-Jai
    • Journal of Korean Neurosurgical Society
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    • v.49 no.5
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    • pp.290-291
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    • 2011
  • Persistent primitive olfactory artery (PPOA) is a rare anomaly of the anterior cerebral artery. We present one case of PPOA incidentally diagnosed with the aid of computed tomography (CT) angiography. A 24-year-old woman was admitted to our hospital after sudden onset of vertigo. Three-dimensional CT angiography revealed an anomalous artery arising from the terminal portion of the right internal carotid artery. The proximal portion of the anomalous artery coursed anteromedially and made a hairpin turn posterosuperior to the midline. PPOA may be overlooked because of its rarity, but CT angiography can be useful in detecting this rare vascular anomaly. Follow-up study is necessary in our case to confirm whether an aneurysm occurs on the PPOA.

Rupturing Anterior Communicating Artery Aneurysm during Computed Tomography Angiography : Three-Dimensional Visualization of Bleeding into the Septum Pellucidum and the Lateral Ventricle

  • Kim, Ealmaan
    • Journal of Korean Neurosurgical Society
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    • v.55 no.6
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    • pp.357-361
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    • 2014
  • Computed tomography angiography (CTA) is commonly used in setting of subarachnoid hemorrhage, but imaging features of aneurysm rupturing taking place at the time of scanning has rarely been described. The author reports a case of actively rebleeding aneurysm of the anterior communicating artery with intraventricular extravasation on the hyperacute CTA imaging. The rebleeding route, not into the third ventricle but into the lateral ventricles, can be visualized by real-time three-dimensional CT pictures. The hemorrhage broke the septum pellucidum and the lamina rostralis rather than the lamina terminalis.

Persistent Hypoglossal Artery

  • Ahn, Jae-Heung;Choe, Woo-Jin;Park, Hyo-Il;Lee, Chae-Heuck
    • Journal of Korean Neurosurgical Society
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    • v.38 no.4
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    • pp.312-315
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    • 2005
  • The persistent hypoglossal artery[PHA] is a rare anomaly that belongs to the group of embryonic carotid-basilar artery anastomoses that may occur in adults. The most commonly reported type of such an anastomosis is the primitive trigeminal artery, followed by the PHA. We report a 35-year old man, hospitalized because of an intraventricular hemorrhage, who was found to have a right persistent PHA. Three-dimensional computed tomography[CT] angiography provided excellent anatomical topology of the anomaly. To our knowledge, this patient is the first case of a PHA identified by this means in Korea.

Computed tomographic anatomy of hepatic artery in normal beagle dogs

  • Kim, Soochan;Jeong, Seongmok;Lee, Heechun;Lee, Youngwon;Choi, Hojung
    • Korean Journal of Veterinary Research
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    • v.59 no.2
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    • pp.55-58
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    • 2019
  • This study was performed to examine the visualization and anatomical variants of the hepatic artery with dual-phase computed tomography (CT) angiography and three-dimensional volume rendering imaging analysis in clinically normal dogs. Seven healthy beagle dogs were enrolled and underwent dual CT angiography. Arterial phase images could be obtained with multi-detector CT angiography using the fixed-scan method in these dogs. Contrast enhancement of the hepatic parenchyma was quite minimal because of the unique blood supply system of the liver. In most dogs, the main hepatic arterial branches were the right lateral branch, left branch, and right medial branch. Although hepatic arterial variation appears to be common in dogs, only one dog in this study had the caudate lobar branch as the first branch of the hepatic artery. Further study on a larger number of dogs with CT images will be needed to identify and classify the pattern of hepatic arterial variations.

A Rare Case of Spontaneous True Aneurysm of the Occipital Artery

  • Kim, Hyung-Seok;Son, Byung-Chul;Lee, Sang-Won;Kim, Il-Sup
    • Journal of Korean Neurosurgical Society
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    • v.47 no.4
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    • pp.310-312
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    • 2010
  • A 51-year-old man presented with a pulsatile scalp mass over the right occipital region, which had increased in size over the previous 1 month. He had no previous history of head trauma. Three-dimensional computed tomography (3D-CT) angiography of the brain revealed a $3.0{\times}1.5\;cm$ occipital artery aneurysm arising from the occipital artery. The occipital artery aneurysm was removed following the ligation of the proximal and distal portion of the occipital artery aneurysm. The histological diagnosis was true aneurysm. To the best of our knowledge, this is the first reported case in the literature.

Usefulness of Three-Dimensional CT Image in Meningioma Using Contrast Method (조영법을 이용한 뇌수막종에서 3차원 CT영상의 유용성)

  • Lee, Jun-Haeng;Baek, Sung-Eun;Lee, Sang-Bock;Kim, Yong-Wan
    • Journal of the Korean Society of Radiology
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    • v.2 no.1
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    • pp.17-21
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    • 2008
  • Because of the reason that the meningioma is enhanced lately, we started the study to maximally enhance the meningioma. we were to know the relation between meningioma and vessels in the skull and compared 3D CT angiography with the conventional angiography. we got the data from 6 patients performed by both 3D CT angiography and there were 5 cases in sphenoidal ridge and 1 case parasagittal sinus. Injecting the contrast media at 3 ml/sec, 120 ml and then the CT number reached 100, we started the study using the medical system Program(smart prep). The scan parameters were HS-Mode(1.25 mm / 7.5 mm) right after being injected all and reconstructed with 0.5 mm interval. We compared the study with the conventional angiography after reconstructing the images required by using 3D-Med software Program(Rapidia). Seeing the consequences, the maximum enhancing time in the menigioma is about 120~180 seconds after injecting the contrast media and we distinguished the relation between vessels and tumors at the time and 1 case showed us the aneurysm with a tumor clearly at the time too. It was very helpful to the operation that the 3D images required by injecting the contrast media to the patients with meningioma distingushed between tumors and vessels dimensionally.

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Diagnostic Imaging of Portosystemic Shunt using CT in Two Dogs (전산화단층촬영을 이용한 문맥전신단락의 진단 증례)

  • Jung, Joo-Hyun;Chae, Woong-Joo;Chang, Jin-Hwa;Chae, Ho-Cheol;Kim, Wan-Hee;Lee, Ki-Chang;Yoon, Jung-Hee;Choi, Min-Cheol
    • Journal of Veterinary Clinics
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    • v.24 no.3
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    • pp.461-466
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    • 2007
  • Two dogs were admitted with a history of anorexia, ataxia, shivering, lethargy, hypersalivation and seizure. Patients were suspected for portosystemic shunts on the basis of clinical signs, increased hepatic serum profiles on the blood test, microhepatica on plain abdominal radiographs, and an abnormally dilated and tortuous vessel on abdominal ultrasonographs. To diagnose PSS and to further evaluate type, shape, and location of shunt and hepatic vasculatures, the computed tomography (CT) angiography for portal and systemic circulation was performed. The shape, location and pathway of extrahepatic single shunt were confirmed in two dogs. Dual phases (the arterial phase and the venous phase) CT angiography and reformatted and three-dimensional images offered good understanding of PSS and planning surgical treatment.

Detection of Aneurysms in Patients with Spontaneous Subarachnoid Hemorrhage : A Comparison of Three-dimensional Computed Tomographic Angiography and Conventional Angiography (자발성 뇌지주막하 출혈 환자에서 뇌동맥류 검출에 대한 고식적 혈관조영술과 3차원 전산화 단층 혈관조영술의 비교)

  • Lee, Kyoung Soo;Kang, Chang Gu;Huh, Ryoong;Lee, Sang Hoon;Chung, Ui Wha
    • Journal of Korean Neurosurgical Society
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    • v.30 no.6
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    • pp.711-716
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    • 2001
  • Objectives : Three-dimensional computed tomographic angiography(3D-CTA) is recently developed diagnostic imaging modality. We have studied this noninvasive method for possible role in replacing conventional angiography( CA) in the detection of aneurysms of the circle of Willis in patients with subarachnoid hemorrahge(SAH). Methods : We studied retrospectively, the 100 patients with SAH or unruptured aneurysms admitted to our hospital from October 1997 to December 1998. Among there, 85 patients underwent CTA, 82 patients underwent CA and 67 patients underwent both of CTA and CA. 3D-CTA was obtained using maximum intensity projection(MIP) and shaded-surface display(SSD) reconstruction. Results : Total 107 aneurysms were detected in 92 patients, and 64 aneurysms were detected in 67 patients underwent both CTA and CA. In five cases of those 67 cases, aneurysms were detected by CA but not by 3D-CTA. The detection rate of aneurysms(91.8%) and the detection rate of parent artery in cases of anterior communicating artery aneurysms(86.9%) with total 3D-CTA were relatively compatible with that of CA. But 3D-CTA was not enough in detection of posterior communicating artery aneurysms, internal carotid artery aneurysms as well as small sized aneurysm(<3mm). Conclusion : We consider CTA is valuable in as a screening test for cerebral aneurysm and follow-up test. And it is also valuable in early surgery for patients with aneurysmal rebleeding because of simple, quick, non-invasive method.

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