scholarly journals A comparable method to Gd-contrast enhancement in the preoperative evaluation of anal fistula

Medicine ◽  
2019 ◽  
Vol 98 (44) ◽  
pp. e17807
Author(s):  
Chao Gu ◽  
Yu Wang ◽  
Lixia Lai ◽  
Weiwei Han ◽  
Jiansheng Li ◽  
...  
Keyword(s):  
Contrast Enhancement ◽  
Anal Fistula ◽  
Preoperative Evaluation ◽  
Comparable Method

Computed Tomographic Discography in the Evaluation of Extreme Lateral Disc Herniation

Neurosurgery ◽  
1984 ◽  
Vol 14 (3) ◽  
pp. 350-352 ◽  
Author(s):  
J. C. Angtuaco Edgardo ◽  
C. Holder John ◽  
C. Boop Warren ◽  
F. Binet Eugene
Keyword(s):  
Lumbar Spine ◽  
High Resolution ◽  
Contrast Enhancement ◽  
Thin Section ◽  
Preoperative Evaluation ◽  
Intervertebral Discs ◽  
Ct Scans ◽  
Computed Tomographic ◽  
Disc Herniations ◽  
Lateral Disc Herniation

Abstract Thin section, high resolution computed tomographic (CT) scans of the lumbar spine produce images that can show herniated intervertebral discs without intravenous or intrathecal contrast enhancement. With this technique, the diagnosis of posterolateral and midline herniation has been greatly facilitated. This communication reports the use of CT discography in the preoperative evaluation of two patients who were shown at discography and proven at operation to have extreme lateral disc herniations.

Computed Tomography of Lipomatous and Myxoid Tumors

1985 ◽  
Vol 26 (6) ◽  
pp. 709-713 ◽  
Author(s):  
S. Lindahl ◽  
G. Markhede ◽  
Ö. Berlin
Keyword(s):  
Computed Tomography ◽  
Contrast Enhancement ◽  
Soft Tissues ◽  
Preoperative Evaluation ◽  
Surrounding Tissue ◽  
Round Cell ◽  
Cell Type ◽  
Radiographic Appearance ◽  
Histologic Types ◽  
Attenuation Values

Thirty-two lipomatous and myxoid tumors were examined by computed tomography (CT). An attempt was made to correlate the radiographic appearance of the tumor to different histologic types of these tumors. It was found that a well delineated lipomatous lesion with uniform radiographic density, an attenuation value below −73 Hounsfield units (HU) and absence of contrast enhancement can be considered strongly suggestive of a benign lipoma. Atypical lipomas, myxoma and well differentiated liposarcomas have good delineation against the surrounding tissue with no peripheral hypervascularity in the majority of cases. The attenuation values varied between −83 and +38 HU. Liposarcomas of myxoid type, mixed myxoid and round-cell type, round-cell type, and pleomorphic type were all poorly delineated with attenuation values between +12 and +38 HU and with varying contrast enhancement. Thus CT can be considered to play an important role in the preoperative evaluation of lipomatous and myxoid tumors of the soft tissues. Besides valuable topographic information CT helps, to some extent, to differentiate between various types of lipomatous tumors.

An Energy Analyser for Contrast Enhancement in STEM

1974 ◽  
Vol 32 ◽  
pp. 434-435
Author(s):  
H.T. Pearce-Percy
Keyword(s):  
Contrast Enhancement ◽  
Bending Angle ◽  
Magnetic Sector ◽  
Conventional Design ◽  
Bending Radius ◽  
Sector Type

Recently an energy analyser of the uniform magnetic sector type has been installd in a 100KV microscope. This microscope can be used in the STEM mode. The sector is of conventional design (Fig. 1). The bending angle was chosen to be 90° for ease of construction. The bending radius (ρ) is 20 cm. and the object and image distances are 42.5 cm. and 30.0 cm. respectively.

Surgical Management of Patients With 22q11.2 Deletion Syndrome

2019 ◽  
Vol 4 (5) ◽  
pp. 857-869
Author(s):  
Oksana A. Jackson ◽  
Alison E. Kaye
Keyword(s):  
Surgical Management ◽  
Preoperative Evaluation ◽  
Preoperative Assessment ◽  
22Q11.2 Deletion Syndrome ◽  
Deletion Syndrome ◽  
22Q11.2 Deletion ◽  
Surgical Decision ◽  
Obstructive Sleep ◽  
Spine Abnormalities ◽  
Speech Assessment

Purpose The purpose of this tutorial was to describe the surgical management of palate-related abnormalities associated with 22q11.2 deletion syndrome. Craniofacial differences in 22q11.2 deletion syndrome may include overt or occult clefting of the palate and/or lip along with oropharyngeal variances that may lead to velopharyngeal dysfunction. This chapter will describe these circumstances, including incidence, diagnosis, and indications for surgical intervention. Speech assessment and imaging of the velopharyngeal system will be discussed as it relates to preoperative evaluation and surgical decision making. Important for patients with 22q11.2 deletion syndrome is appropriate preoperative screening to assess for internal carotid artery positioning, cervical spine abnormalities, and obstructive sleep apnea. Timing of surgery as well as different techniques, common complications, and outcomes will also be discussed. Conclusion Management of velopharyngeal dysfunction in patients with 22q11.2 deletion syndrome is challenging and requires thoughtful preoperative assessment and planning as well as a careful surgical technique.

Positive correlation between neovascularization degree of carotid atherosclerosis determined by contrast-enhanced ultrasound and level of serum C-reactive protein

VASA ◽  
2015 ◽  
Vol 44 (3) ◽  
pp. 0187-0194 ◽  
Author(s):  
Xiaoni Chang ◽  
Jun Feng ◽  
Litao Ruan ◽  
Jing Shang ◽  
Yanqiu Yang ◽  
...  
Keyword(s):  
Contrast Enhancement ◽  
Rank Correlation ◽  
Artery Stenosis ◽  
Contrast Enhanced Ultrasound ◽  
C Reactive Protein ◽  
Protein Levels ◽  
Reactive Protein ◽  
Contrast Enhanced ◽  
Grade 3 ◽  
Axis View

Background: Neovascularization is one of the most important risk factors for unstable plaque. This study was designed to correlate plaque thickness, artery stenosis and levels of serum C-reactive protein with the degree of intraplaque enhancement determined by contrast-enhanced ultrasound. Patients and methods: Contrast-enhanced ultrasound was performed on 72 carotid atherosclerotic plaques in 48 patients. Contrast enhancement within the plaque was categorized as grade 1, 2 or 3. Maximum plaque thickness was measured in short-axis view. Carotid artery stenosis was categorized as mild, moderate or severe. Results: Plaque contrast enhancement was not associated with the degree of artery stenosis or with plaque thickness. Serum C-reactive protein levels were positively correlated with the number of new vessels in the plaque. C-reactive protein levels increased in the three groups(Grade 1: 3.72±1.79mg/L; Grade 2: 7.88±4.24 mg/L; Grade 3: 11.02±3.52 mg/L), with significant differences among them (F=10.14, P<0.01), and significant differences between each two groups (P<0.05). Spearman’s rank correlation analysis showed that serum C-reactive protein levels were positively correlated with the degree of carotid plaque enhancement (Rs =0.69, P<0.01). Conclusions: The combination of C-reactive protein levels and intraplaque neovascularization detected by contrast-enhanced ultrasound may allow more accurate evaluation of plaque stability.

Minimally Invasive Repair of Pectus Excavatum (MIRPE) - The Basel Experience

Swiss Surgery ◽  
2003 ◽  
Vol 9 (6) ◽  
pp. 289-295 ◽  
Author(s):  
Haecker ◽  
Bielek ◽  
von Schweinitz
Keyword(s):  
Minimally Invasive ◽  
Pectus Excavatum ◽  
Pulmonary Function Tests ◽  
Preoperative Evaluation ◽  
Skin Incision ◽  
Original Method ◽  
Restrictive Lung Disease ◽  
Cardiac Compression ◽  
Cardiac Evaluation ◽  
Indications For Operation

Purpose: Minimally invasive repair of pectus excavatum (MIRPE) was first reported in 1998 by D. Nuss. This technique has gained wide acceptance during the last 4-5 years. In the meantime, some modifications of the technique have been introduced by different authors. Our retrospective study reports our own experience over the last 36 months and modifications introduced due to a number of complications. Methods: From 3/2000 to 3/2003, 22 patients underwent MIRPE. Patients median age was 15.5 years (10.7 to 20.3 years). Standardised preoperative evaluation included 3D computerised tomography (CT) scan, pulmonary function tests, cardiac evaluation with electrocardiogram and echocardiography, and photo documentation. Indications for operation included at least two of the following: Haller CT index > 3.2, restrictive lung disease, cardiac compression, progression of the deformity and severe psychological alterations. Results: In 22 patients (2 girls, 20 boys) undergoing MIRPE procedure, a single bar was used in 21 patients and two bars in one boy. Lateral stabilisers were fixed with non resorbable sutures on both sides. Overall, postoperative complications occurred in six patients (27.3%). In two patients (9.1%) a redo-procedure was necessary due to bar displacement. An additional median skin incision was performed in two patients to elevate the sternum. Pneumothorax or hematothorax in two patients resulted in routine use of a chest tube on both sides. Long-term favourable results were noted in all patients. Conclusions: The MIRPE procedure is an effective method with elegant cosmetic results. Modifications of the original method help to decrease the complication rate and to accelerate acquirement of expertise.

Preoperative Evaluation Of The Blepharoplasty Patient

1993 ◽  
Vol 20 (2) ◽  
pp. 213-223 ◽  
Author(s):  
Glenn W. Jelks ◽  
Elizabeth B. Jelks
Keyword(s):  
Preoperative Evaluation
Sign in / Sign up

Export Citation Format

Share Document