Multi–Detector Row Helical CT Angiography of Hepatic Vessels: Depiction with Dual-arterial Phase Acquisition during Single Breath Hold

Takahashi, Satoru; Murakami, Takamichi; Takamura, Manabu; Kim, Tonsok; Hori, Masatoshi; Narumi, Yasuo; Nakamura, Hajime; Kudo, Masayuki

doi:10.1148/radiol.2221010326

Cited by 102 publications

(53 citation statements)

References 23 publications

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“…The complete origin of the CHA from the LGA (type X) could not be found in any patient, which corresponds to the studies of Koops et al and Covey et al [13,14]. In 26 patients not yet classified variants were detected. This result did not meet the expectations, since their incidence in other studies was higher.…”

supporting

confidence: 87%

Hepatic Arterial Supply in 1297 CT-Angiographies

Löschner

Nagel

Kausche

et al. 2015

Fortschr Röntgenstr

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Purpose: Analysis, evaluation and classification of hepatic arterial supply variants and determination of their frequency distribution in CT-angiographies. Materials and Methods: CT-angiographies of 1,568 patients were evaluated retrospectively for the period between January 1, 2010 and August 30, 2012. The hepatic arterial anatomy was assessed and categorized according to Michels?s classification. So far unclassified variants were considered separately. Results: CT-angiographies of 1297 patients were included in the study. Type I according to Michels was seen in 937 cases (72.2?%), followed by type V in 114 patients (8.8?%) and type III in 83 patients (6.4?%). Type X could not be found in any of the patients. Not yet classified variants were discovered in 26 patients. The most frequent variant in this connection was a right hepatic artery originating from the superior mesenteric artery with the left hepatic artery originating from the left gastric artery (n?=?10). Conclusion: Michels?s classification could be largely confirmed on the basis of a radiologically examined patient population. Not yet classified variants were categorized into subgroups of the existing classification. Key points: ??Imaging of hepatic arterial supply variants using CT-angiography ??Distribution of variations of arterial liver supply in a general patient population ??Expansion of Michels?s classification to include new variations of the arterial liver supply Citation Format: ??L?schner C, Nagel SN, Kausche S et?al. Hepatic Arterial Supply in 1297 CT-Angiographies. Fortschr R?ntgenstr 2015; 187: 276???282

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supporting

confidence: 87%

Hepatic Arterial Supply in 1297 CT-Angiographies

Löschner

Nagel

Kausche

et al. 2015

Fortschr Röntgenstr

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“…The advancement allowed high-speed (the entire liver volume can be mapped in one breath-hold), high-resolution, and highly accurate vasculature mapping with multi-planar reconstruction of the image [15,16]. Image quality was governed by the volume coverage speed (VCS) of the scanner, which itself was dependant on the number of scanners used.…”

Section: Imaging Modalitiesmentioning

confidence: 99%

Hepatic Arterial Mapping by CT Angiography, Cone Beam CT and Digital Subtraction Angiography

Ahmer¹

2016

JLRDT

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Objectives: To determine the imaging modality that provided the greatest detail of the hepatic vasculature.Background: Due to the embryonic origin of the hepatic vasculature, variations can occur. Accurate knowledge of the hepatic arterial anatomy is essential in the field of transarterial liver interventions, including chemo-and radioembolisation of liver metastasis, allowing accurate tumour targeting whilst minimising the risk of non-target embolisation.Methods: 39 patients underwent work up for Selective Internal Radiotherapy. All had CT Angiography and Digital Subtraction Angiography (DSA) carried out and 22/39 underwent a DynaCT scan. The data was analysed retrospectively to determine vasculature branching, segmental vascularisation and Right Gastric Artery (RGA) origin. Results:The vasculature variations found in our patients was comparable to previous studies using Michel's Classification. The CT Angiography only located the RGA origin in 12.8% of the patients and it was seen in 87.1% of DSAs carried out. RGAs not found on DSA were located on DynaCT. Vascularisation was comparable to previous data, with segment 4 of the liver being supplied by leftsided circulation in 78% of patients with standard branching anatomy. Conclusion:Segmental vascularisation is a more relevant way to classify vasculature with respect to radioembolisation. DSA and DynaCT are useful at determining the RGA origin, with the latter providing more details of small vasculature.

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“…2), and surgeons can use these 3D images for preoperative anatomical evaluation and patient education. 2 …”

Section: Ct Imagingmentioning

confidence: 99%

“…The wide availability of multidetectorrow CT (MDCT) with more than 64 channels has led to liver imaging using dynamic MDCT with high spatial and temporal resolution, and CT has developed from 2-(2D) to 3-dimensional (3D) imaging. 1,2 Advances have also been made in the research of functional imaging, such as analysis of tissue blood ‰ow by perfusion CT 3 and fast techniques for MR imaging. Dynamic MR imaging with 3D T 1 -weighted gradient echo sequence and nonspeciˆc contrast medium, such as gadopentetate dimeglumine (Gd-DTPA), is also reported useful.…”

Section: Introductionmentioning

confidence: 99%

CT versus MR Imaging of Hepatocellular Carcinoma: Toward Improved Treatment Decisions

2012

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Detection, characterization, staging, and treatment monitoring are major roles of diagnostic imaging of liver cancers. Developments in multidetector-row computed tomography (MDCT) technology have increased the spatial and temporal resolution of CT to allow more precise evaluation of the hemodynamics of liver tumors and improve the diagnostic accuracy of dynamic MDCT. The high spatial and temporal resolutions of dynamic MDCT enable us to reconstruct 3-dimensional (3D) images that are very useful for pretreatment evaluation. Dynamic MR imaging with fast 3D T 1 -weighted gradient echo imaging sequence using nonspeciˆc contrast medium can be highly sensitive for detecting hypervascular HCC. However, the use of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA), a contrast medium speciˆc to hepatic tissue, oŠers greater diagnostic ability and, so, has become essential to liver imaging. MR imaging with Gd-EOB-DTPA may replace CT during hepatic arteriography and CT during arterioportography.

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Multi–Detector Row Helical CT Angiography of Hepatic Vessels: Depiction with Dual-arterial Phase Acquisition during Single Breath Hold

Abstract: Multi-detector row CT angiography was able to depict the hepatic vascular anatomy.

Cited by 102 publications

References 23 publications

Hepatic Arterial Supply in 1297 CT-Angiographies

Hepatic Arterial Supply in 1297 CT-Angiographies

Hepatic Arterial Mapping by CT Angiography, Cone Beam CT and Digital Subtraction Angiography

CT versus MR Imaging of Hepatocellular Carcinoma: Toward Improved Treatment Decisions

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