Anatomic study of the profunda artery perforators by multidetector CT scanner and clinical use of the banana‐shaped flap design for breast reconstruction

2021 ◽  
Author(s):  
Assaf A. Zeltzer ◽  
Karl Waked ◽  
Carola Brussaard ◽  
Gabriele Giunta ◽  
Randy De Baerdemaeker ◽  
...  
Keyword(s):  
Breast Reconstruction ◽  
Multidetector Ct ◽  
Clinical Use ◽  
Ct Scanner ◽  
Anatomic Study ◽  
Flap Design

scholarly journals Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study

2021 ◽  
Vol 11 (5) ◽  
pp. 2047
Author(s):  
Nor Azura Muhammad ◽  
Zunaide Kayun ◽  
Hasyma Abu Hassan ◽  
Jeannie Hsiu Ding Wong ◽  
Kwan Hoong Ng ◽  
...  
Keyword(s):  
Image Quality ◽  
Multidetector Ct ◽  
Organ Dose ◽  
Quality Metrics ◽  
Ct Scanner ◽  
Image Quality Metrics ◽  
Tube Current ◽  
Significant Difference ◽  
Noise Ratio ◽  
The Impact

The aim of this study is to investigate the impact of CT acquisition parameter setting on organ dose and its influence on image quality metrics in pediatric phantom during CT examination. The study was performed on 64-slice multidetector CT scanner (MDCT) Siemens Definition AS (Siemens Sector Healthcare, Forchheim, Germany) using various CT CAP protocols (P1–P9). Tube potential for P1, P2, and P3 protocols were fixed at 100 kVp while P4, P5, and P6 were fixed at 80 kVp with used of various reference noise values. P7, P8, and P9 were the modification of P1 with changes on slice collimation, pitch factor, and tube current modulation (TCM), respectively. TLD-100 chips were inserted into the phantom slab number 7, 9, 10, 12, 13, and 14 to represent thyroid, lung, liver, stomach, gonads, and skin, respectively. The image quality metrics, signal to noise ratio (SNR) and contrast to noise ratio (CNR) values were obtained from the CT console. As a result, this study indicates a potential reduction in the absorbed dose up to 20% to 50% along with reducing tube voltage, tube current, and increasing the slice collimation. There is no significant difference (p > 0.05) observed between the protocols and image metrics.

scholarly journals Characterization of Solid Renal Masses using 64-Slice Multidetector CT Scanner

2009 ◽  
Vol 9 ◽  
pp. 441-448 ◽  
Author(s):  
Saleh S. El-Esawy ◽  
Mohamed E. Abou El-Ghar ◽  
Ghada M. Gaballa ◽  
Saly A. Zahra
Keyword(s):  
Cell Carcinoma ◽  
Clear Cell ◽  
Multidetector Ct ◽  
Left Kidney ◽  
Ct Scanner ◽  
Renal Masses ◽  
Surgical Data ◽  
Attenuation Values ◽  
Mdct Scanner

The purpose of our study was to assess the role of a 64-slice multidetector CT (MDCT) scanner in the characterization of different solid renal masses, using a simplified approach to correct the postenhancement attenuation values. The study included 96 consecutive adults (58 men, 38 women) with renal masses; 93 with unilateral and three with bilateral masses. All of our patients underwent multiphasic CT study including pre- and postcontrast corticomedullary (CM) and nephrographic phases. We analyzed the images and corrected the postcontrast attenuation values at the CM phase. The postbiopsy or -surgical data were used as reference standard. There were 53 masses at the right kidney, 40 at the left kidney, and three bilateral. The final diagnosis of the 96 solid parenchymal masses were 28 clear-type renal cell carcinoma (RCC), 22 papillary-type RCC, 21 chromophobe-type RCC, six XP 11.2 chromosomal translocation–type RCC, 15 angiomyolipoma (AML), and seven oncocytoma. All the AML had fat, with attenuation values less than -40 HU at the nonenhanced scan. There is no difference in the precontrast attenuation values for the different types other than AML. At the postcontrast CM phase after the correction of the attenuation values, the clear cell type could be separated easily, with attenuation values >20 with specificity, sensitivity, and overall accuracy of 92, 84, and 93%, respectively. The 64-slice MDCT scanner with application of enhancement values correction allows diagnosis of clear cell carcinoma. Also, AML could be identified easily with fat inside at the precontrast scan.

scholarly journals A Clinical Anatomic Study of Internal Mammary Perforators as Recipient Vessels for Breast Reconstruction

2013 ◽  
Vol 40 (6) ◽  
pp. 761 ◽  
Author(s):  
In-Soo Baek ◽  
Jae-Pil You ◽  
Sung-Mi Rhee ◽  
Gil-Su Son ◽  
Deok-Woo Kim ◽  
...  
Keyword(s):  
Breast Reconstruction ◽  
Anatomic Study ◽  
Internal Mammary

scholarly journals Isolated pericardial hydatid cyst: anatomical details on 64 slice multidetector CT scanner

2012 ◽  
Vol 2012 (oct08 1) ◽  
pp. bcr2012006595-bcr2012006595 ◽  
Author(s):  
A. N. D. Dwivedi ◽  
S. Gupta ◽  
L. Bhatia ◽  
S. Tripathi
Keyword(s):  
Hydatid Cyst ◽  
Multidetector Ct ◽  
Ct Scanner

Breast reconstruction using free medial circumflex artery perforator flaps: intraoperative anatomic study and clinical results

Breast Cancer ◽  
2016 ◽  
Vol 24 (3) ◽  
pp. 458-464 ◽  
Author(s):  
Mai Shibuya ◽  
Toshihiko Satake ◽  
Reiko Nakasone ◽  
Marina Ogawa ◽  
Mayu Muto ◽  
...  
Keyword(s):  
Breast Reconstruction ◽  
Clinical Results ◽  
Anatomic Study ◽  
Perforator Flaps ◽  
Circumflex Artery ◽  
Artery Perforator

Low radiation dose ECG-gated chest CT angiography on a 256-slice multidetector CT scanner

2009 ◽  
Vol 25 (S2) ◽  
pp. 267-278 ◽  
Author(s):  
Tariq A. Hameed ◽  
Shawn D. Teague ◽  
Mani Vembar ◽  
Ekta Dharaiya ◽  
Jonas Rydberg
Keyword(s):  
Radiation Dose ◽  
Ct Angiography ◽  
Multidetector Ct ◽  
Chest Ct ◽  
Ct Scanner ◽  
Low Radiation Dose

Image-guided surgery planning for breast reconstruction flap design

2007 ◽  
Author(s):  
Pengfei Huang ◽  
Lixu Gu ◽  
Hua Xu ◽  
Jiasheng Dong ◽  
Jie Liu ◽  
...  
Keyword(s):  
Breast Reconstruction ◽  
Image Guided Surgery ◽  
Surgery Planning ◽  
Guided Surgery ◽  
Image Guided ◽  
Flap Design

Planning Breast Reconstruction with Deep Inferior Epigastric Artery Perforating Vessels: Multidetector CT Angiography versus Color Doppler US

Radiology ◽  
2010 ◽  
Vol 255 (3) ◽  
pp. 979-987 ◽  
Author(s):  
Alessandro Cina ◽  
Marzia Salgarello ◽  
Liliana Barone-Adesi ◽  
Pierluigi Rinaldi ◽  
Lorenzo Bonomo
Keyword(s):  
Breast Reconstruction ◽  
Ct Angiography ◽  
Multidetector Ct ◽  
Color Doppler ◽  
Inferior Epigastric Artery ◽  
Epigastric Artery ◽  
Versus Color ◽  
Deep Inferior Epigastric Artery ◽  
Color Doppler Us ◽  
Multidetector Ct Angiography

scholarly journals Virtual Non-Contrast versus True Non-Contrast Computed Tomography: Initial Experiences with a Photon Counting Scanner Approved for Clinical Use

Diagnostics ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2377
Author(s):  
Julius Henning Niehoff ◽  
Matthias Michael Woeltjen ◽  
Kai Roman Laukamp ◽  
Jan Borggrefe ◽  
Jan Robert Kroeger
Keyword(s):  
Computed Tomography ◽  
Clinical Practice ◽  
Photon Counting ◽  
Routine Clinical Practice ◽  
Regions Of Interest ◽  
Clinical Use ◽  
Ct Scanner ◽  
Diagnostic Reliability ◽  
Quantitative Image

The present study evaluates the diagnostic reliability of virtual non-contrast (VNC) images acquired with the first photon counting CT scanner that is approved for clinical use by comparing quantitative image properties of VNC and true non-contrast (TNC) images. Seventy-two patients were retrospectively enrolled in this study. VNC images reconstructed from the arterial (VNCa) and the portalvenous (VNCv) phase were compared to TNC images. In addition, consistency between VNCa and VNCv images was evaluated. Regions of interest (ROI) were drawn in the following areas: liver, spleen, kidney, aorta, muscle, fat and bone. Comparison of VNCa and VNCv images revealed a mean offset of less than 4 HU in all tissues. The greatest difference between TNC and VNC images was found in spongious bone (VNCv 86.13 HU ± 28.44, p < 0.001). Excluding measurements in spongious bone, differences between TNC and VNCv of 10 HU or less were found in 40% (VNCa 36%) and differences of 15 HU or less were found in 72% (VNCa 68%) of all measurements. The underlying algorithm for the subtraction of iodine works in principle but requires adjustments. Until then, special caution should be exercised when using VNC images in routine clinical practice.

scholarly journals Clinical and Radiation Diagnosisof Renal Arteriovenous Malformation

2017 ◽  
pp. 53-61
Author(s):  
A. N. Askerova
Keyword(s):  
Arteriovenous Malformation ◽  
Digital Subtraction Angiography ◽  
Arteriovenous Malformations ◽  
Multidetector Ct ◽  
Accurate Information ◽  
Digital Subtraction ◽  
Ct Scanner ◽  
Medical Systems ◽  
Iodinated Contrast ◽  
Renal Arteriovenous Malformation

Purpose:to analyze the results of preoperative diagnosis and treatment of patients with renal arteriovenous malformation and compare them with the literature data.Materials and methods.5 patients with renal arteriovenous malformations were examined for the period from 2014 to2016 in the FSBI "A.V. Vishnevsky Institute of Surgery» MH RF, where simultaneously there are clinical departments of urology and vascular surgery, 4 of them were treated. All patients were female. The mean age was 31.8 ± 6.7 years (24–41 years). Ultrasound was done to all the patients in B-mode followed by a duplex scan using an abdominal 2–4 MHz convex. MDCT was performed in 4 patients out of 5. Patients underwent multiphase examination on a multidetector CT-scanner Philips Brilliance iCT-256 and Brilliance CT-64 (Philips Medical Systems (Cleveland) with the 120 kV and 100 kV protocols and an intravenous injection of the iodinated contrast agent. Digital subtraction angiography was performed in 3 patients.Results.One-sided lesion occurred in four cases (3 of them (60%) right-sided and 1 (20%) left-sided), in one patient (20%) arteriovenous malformation was bilateral As a result of the analysis of our own material and literature data, the diagnostic criteria of renal arteriovenous malformations according to ultrasound, MDCT and digital subtraction angiography were studied in detail. The results of the examinations of 5 patients with demonstration of ultrasound, MDCT and angiographic images are presented with the visualization of the characteristic features of renal AVM. In addition, the treatment options for such patients with the possibility of preserving the kidney are described.Conclusion.Duplex scanning is an effective method of diagnosis and postoperative follow-up of patients with renal arteriovenous malformations. Preoperative computed tomography and selective digital subtraction angiography provide accurate information about the renal angioarchitectonics and AV-shunts for choosing the treatment tactics and planning the surgical intervention. 

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