Computed Tomography-directed Stereotaxy for Biopsy and Interstitial Irradiation of Brain Tumors: Technical Note

Neurosurgery ◽  
1982 ◽  
Vol 11 (1_pt_1) ◽  
pp. 38-42 ◽  
Author(s):  
Alexander R. MacKay ◽  
Philip H. Gutin ◽  
Yoshio Hosobuchi ◽  
David Norman
Keyword(s):  
Computed Tomography ◽  
Brain Tumors ◽  
Radioactive Source ◽  
Technical Note ◽  
Accurate Diagnosis ◽  
Diagnosis And Treatment ◽  
Interstitial Irradiation ◽  
Computed Tomographic ◽  
Stereotactic Frame ◽  
Stereotactic System

Abstract A computed tomographic-stereotactic system based on the Leksell stereotactic frame has been used to implant radioactive 125I sources into (28 procedures) or to biopsy (2 procedures as biopsy only, 2 in conjunction with the implantation of a radioactive source) malignant brain tumors. In every instance, the selected target was reached precisely, allowing accurate diagnosis and treatment.

Interstitial Brachytherapy of Malignant Brain Tumors Using Computed Tomography-guided Stereotaxis and Available Imaging Software: Technical Report

Neurosurgery ◽  
1987 ◽  
Vol 20 (1) ◽  
pp. 4-7 ◽  
Author(s):  
Robert J. Coffey ◽  
William A. Friedman
Keyword(s):  
Computed Tomography ◽  
Brain Tumors ◽  
Interstitial Brachytherapy ◽  
Preoperative Imaging ◽  
Computer Assisted ◽  
Radiotherapy Treatment Planning ◽  
Computed Tomographic ◽  
Technical Report ◽  
Stereotactic System ◽  
Stereotactic Implantation

Abstract The implantation of radioactive sources into malignant intraaxial brain tumors, interstitial brachytherapy, is a theoretically attractive treatment for these nearly uniformly fatal lesions. Optimal application of this treatment modality requires careful preoperative planning, computer-assisted dosimetry, and computed tomography-guided stereotactic implantation of the isotope-bearing catheters. A method is presented by which available computed tomographic imaging software can be used with a standard radiotherapy treatment planning computer and the Brown-Roberts-Wells stereotactic system for preoperative imaging, dosimetry planning, and brachytherapy catheter insertion. Dedicated computer facilities are not required, making this method available to any neurosurgeon with access to a current generation computed tomographic scanner.

Computed tomography-directed stereotaxy for biopsy and interstitial irradiation of brain tumors

Neurosurgery ◽  
1982 ◽  
Vol 11 (1 Pt 1) ◽  
pp. 38???42 ◽  
Author(s):  
A R MacKay ◽  
P H Gutin ◽  
Y Hosobuchi ◽  
D Norman
Keyword(s):  
Computed Tomography ◽  
Brain Tumors ◽  
Interstitial Irradiation

Computer Simulation for the Stereotactic Placement of Interstitial Radionuclide Sources into Computed Tomography-defined Tumor Volumes

Neurosurgery ◽  
1984 ◽  
Vol 14 (4) ◽  
pp. 442-448
Author(s):  
J. Kelly Patrick ◽  
A. Kall Bruce ◽  
Goerss Stephan
Keyword(s):  
Computed Tomography ◽  
Computer Simulation ◽  
Solid Tumor ◽  
Tumor Volume ◽  
Three Dimensional ◽  
Radioactive Source ◽  
Stereotactic Frame ◽  
Ct Data ◽  
Ct Slices

Abstract This report describes a method for the preoperative determination of radioactive interstitial source placement within computed tomography (CT)-defined tumor boundaries. The method utilizes CT data obtained under stereotactic conditions. Tumor boundaries are digitized from CT slices and are retained in a three-dimensional computer matrix. A solid tumor volume is created by an interpolation program and may be sliced orthogonal to any specific stereotactic surgical view line. The surgeon may simulate radioactive source placement within the slices and view the resultant isodose configuration against tumor contours on successive slices. Once the best source placement has been determined, the computer outputs the mechanical adjustments that will be necessary on a stereotactic frame located in the operating room for the stereotactic placement of each source and gives the length of each source. Sources are stereotactically implanted utilizing a double-catheter afterloading technique.

Accurate diagnosis and treatment of isolated mesenteric artery dissections

Vascular ◽  
2019 ◽  
Vol 28 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Chen Gang ◽  
Gao Xiujuan ◽  
Xu Yingjiang ◽  
Cui Xun ◽  
Shang Dan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Conservative Treatment ◽  
Computed Tomography Angiography ◽  
Mesenteric Artery ◽  
Accurate Diagnosis ◽  
Diagnosis And Treatment ◽  
Initial Visit ◽  
Group A ◽  
Group B

Objectives Diagnosis and treatment of isolated mesenteric artery dissections (IMAD) are overlooked. The purpose of this study was to assess the clinical feature, possible diagnostic errors and treatment methods. Methods From January 2010 to December 2017, 99 consecutive patients who were diagnosed with IMAD on computed tomography angiography were enrolled retrospectively. Thirty-nine misdiagnosed patients, false negative, and 60 accurate diagnosis patients with revealed IMAD were compared. In addition, therapeutic schemes were evaluated. Results Ninety-nine patients participated in this study; 39 patients (34 men, 5 women; median age, 51.41 years, range 38–64 years) were included in group A who were misdiagnosed initial visit; the remaining 60 patients (52 men, 8 women; median age, 52.07 years, range 38–68 years) with IMAD who were diagnosed accurately initial visit were included in group B. Significant differences were observed between the two groups with respect to dissection length (55.26 ± 3.88 mm vs. 43.37 ± 2.75 mm; p = 0.01), and branch involvement (14 and 9, respectively; p = 0.04). Ultimately, 33 patients (group A 14 patients and group B 19 patients) underwent invasive interventional therapy, and 66 patients with conservative treatment with antithrombotic agents (group A 25 patients and group B 41 patients). A total of 86 (86.87%) had follow-up computed tomography angiography with a median duration of 24.51 months (range 2–71 months). Three patients died during follow-up. The remaining patients recovered smoothly. Conclusion Physicians should raise the awareness of IMAD and use the optimal treatment time frame. Diagnosis of IMAD depends on imaging examinations, especially computed tomography angiography. Additionally, conservative management is the most common initial treatment. For patients in whom conservative treatment fails, endovascular and/or surgery may be necessary.

Computed tomographic findings and treatment of an unusual fracture of the proximal ulna in a mature dog

2011 ◽  
Vol 24 (02) ◽  
pp. 161-164
Author(s):  
T. Trevail ◽  
E. J. Comerford ◽  
R. D. Hattersley
Keyword(s):  
Computed Tomography ◽  
Surgical Planning ◽  
Kirschner Wire ◽  
Normal Function ◽  
Labrador Retriever ◽  
Diagnosis And Treatment ◽  
Proximal Ulna ◽  
Computed Tomographic ◽  
Satisfactory Outcome

SummaryThis report describes the diagnosis and treatment of an unusual fracture of the proximal ulna in a four-year-old male neutered Labrador Retriever dog, the orientation of which has not been reported in the veterinary literature. Computed tomography allowed fracture visualisation and aided surgical planning. Fixation was achieved using a lag screw and an anti-rotational Kirschner wire. Six month follow-up indicated satisfactory outcome with complete return to normal function.

Three-Dimensional Computed Tomography in the Diagnosis of Vertebral Column Pathological Conditions

Neurosurgery ◽  
1987 ◽  
Vol 21 (2) ◽  
pp. 186-192 ◽  
Author(s):  
Mark N. Hadley ◽  
Volker K. H. Sonntag ◽  
Rob M. Amos ◽  
John A. Hodak ◽  
Lynda J. Lopez
Keyword(s):  
Computed Tomography ◽  
Vertebral Column ◽  
Three Dimensional ◽  
Lumbar Vertebrae ◽  
Diagnostic Technique ◽  
Craniovertebral Junction ◽  
Diagnosis And Treatment ◽  
Computed Tomographic ◽  
Pathological Conditions ◽  
Valuable Adjunct

Abstract Three-dimensional computed tomographic scanning is a valuable adjunct in the diagnosis and treatment of disease processes involving the spine. We present our experience with this noninvasive radiological diagnostic technique in 32 patients with vertebral column abnormalities ranging from craniovertebral junction disorders to fractures of lumbar vertebrae. The three-dimensional CT images often demonstrate pathological conditions and occult lesions that are not adequately defined by conventional radiographic means.

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