MRI (NMR) in the diagnosis of brain-stem tumors

1985 ◽  
Vol 27 (3) ◽  
pp. 208-213 ◽  
Author(s):  
G. B. Bradac ◽  
W. Sch�rner ◽  
A. Bender ◽  
R. Felix
Keyword(s):  
Brain Stem ◽  
Brain Stem Tumors

Iodine-125 Brachytherapy of Brain Stem Tumors

2004 ◽  
Vol 180 (7) ◽  
pp. 449-454 ◽  
Author(s):  
Jenö Julow ◽  
Árpád Viola ◽  
Tibor Major ◽  
István Valálik ◽  
Sarolta Sági ◽  
...  
Keyword(s):  
Brain Stem ◽  
Brain Stem Tumors ◽  
Iodine 125

ITVT-07. Robotic alignment module Cirq for navigated brainstem tumor biopsies

2021 ◽  
Vol 23 (Supplement_6) ◽  
pp. vi229-vi229
Author(s):  
Kirsten van Baarsen ◽  
Peter Woerdeman ◽  
Mariam Slot ◽  
Eelco Hoving
Keyword(s):  
Brain Stem ◽  
3D Ct ◽  
Registration Accuracy ◽  
Brainstem Tumor ◽  
Intended Target ◽  
Registration Errors ◽  
Surgical Devices ◽  
Brain Stem Tumors ◽  
Tumor Biopsies ◽  
Euclidian Distances

Abstract BACKGROUND With the incorporation of the robotic alignment module Cirq (Brainlab, Germany) into our neurosurgical armamentarium, we aimed to know our baseline accuracy in stererotactic biopsies. We therefore retrospectively reviewed our data on biopsy accuracy for brain(stem) tumors using the non-robotic alignment instrument Varioguide (Brainlab, Germany). Because of unexpectedly large deviations from the intended target, we sought to improve our registration accuracy when we introduced Cirq. Intraoperative 3D CT with bone fiducials was added to the pre-operative 3D T1 MRI with skin fiducials. This made it possible to compare surgical devices as well as registration methods. AIMS To share our experience with the new robotic alignment module Cirq for navigated brain(stem) tumor biopsies and to evaluate its target accuracy with bone fiducial registration, as compared to the previously used Varioguide with skin fiducial registration. METHODS All patients (0–18 years old) that underwent a brain(stem) biopsy in our institution were included. Over 2018–2020, data were collected retrospectively (cohort Varioguide with 3D T1 MRI registration with skin fiducials). From 2021, data were collected prospectively (cohort Cirq with both 3D T1 MRI registration with skin fiducials and intraoperative CT registration with bone fiducials). For both cohorts, Euclidian distances were calculated between the intended target and the obtained target. For the prospective cohort, registration errors were calculated for bone versus skin fiducials. PRELIMINARY REUSLTS The deviation from the intended target was much smaller in the Cirq cohort versus the Varioguide cohort. Within the Cirq cohort, registration errors were submillimetric for bone fiducial registration as compared to several millimeters for skin fiducial registration. CONCLUSION: The Cirq robotic arm is convenient, safe and highly accurate, especially when combined with intraoperative 3D CT bone fiducial registration. Skin fiducial registration does not offer the level of precision that is mandatory in brainstem tumor biopsies.

Brain-stem tumors in childhood: a prospective randomized trial of irradiation with and without adjuvant CCNU, VCR, and prednisone

1987 ◽  
Vol 66 (2) ◽  
pp. 227-233 ◽  
Author(s):  
R. Derek T. Jenkin ◽  
Carl Boesel ◽  
Inta Ertel ◽  
Audrey Evans ◽  
Robert Hittle ◽  
...  
Keyword(s):  
Adjuvant Chemotherapy ◽  
Brain Stem ◽  
Radiation Treatment ◽  
Risk Of Infection ◽  
Content Type ◽  
Standard Methods ◽  
Increased Risk ◽  
Brain Stem Tumors ◽  
A Prospective Study ◽  
Fine Print

✓ Seventy-four children with a brain-stem tumor diagnosed between 1977 and 1980 were entered into a prospective study in which exploration and assessment for resection were optional, radiation treatment using standard methods was required, and randomization occurred with regard to the use of adjuvant chemotherapy (l-(2-chloroethyl)-l-nitrosourea, vincristine, and prednisone) or no further treatment. The overall 5-year survival rate was 20% and was not improved by the adjuvant chemotherapy program. An increased risk of infection was associated with the adjuvant therapy.

Treatment of childhood diffuse brain stem tumors: comparison of results in different treatment modalities

2006 ◽  
Vol 8 (1) ◽  
pp. 45-49 ◽  
Author(s):  
Melissa M. de Aquino Gorayeb ◽  
Salim Aisen ◽  
Wladimir Nadalin ◽  
Rodrigo Panico Gorayeb ◽  
Heloisa de Andrade Carvalho
Keyword(s):  
Brain Stem ◽  
Treatment Modalities ◽  
Comparison Of Results ◽  
Brain Stem Tumors ◽  
Diffuse Brain

Imaging of brain stem tumors

2000 ◽  
Vol 3 (2) ◽  
pp. 87-105 ◽  
Author(s):  
Alberto Beltramello ◽  
Maria Cristina Lombardo ◽  
Barbara Masotto ◽  
Albino Bricolog
Keyword(s):  
Brain Stem ◽  
Brain Stem Tumors

Brain stem tumors occurring in adults

Neurology ◽  
1963 ◽  
Vol 13 (4) ◽  
pp. 292-292 ◽  
Author(s):  
H. H. White
Keyword(s):  
Brain Stem ◽  
Brain Stem Tumors

Cystic schwannoma of the trochlear nerve mimicking a brain-stem tumor

1987 ◽  
Vol 67 (6) ◽  
pp. 928-930 ◽  
Author(s):  
Paul Douglas Garen ◽  
Clive Gordon Harper ◽  
Charles Teo ◽  
Ian Hugh Johnston
Keyword(s):  
Brain Stem ◽  
Cranial Nerve ◽  
Clinical Approach ◽  
Trochlear Nerve ◽  
Surgical Biopsy ◽  
Content Type ◽  
Brain Stem Tumors ◽  
Fourth Cranial Nerve ◽  
Cystic Schwannoma ◽  
Fine Print

✓ A case is reported of a rare cystic schwannoma of the fourth cranial nerve which was interpreted as a probable intrinsic brain-stem lesion. The clinical approach to brain-stem tumors in terms of empirical treatment or surgical biopsy is discussed.

Dorsally Exophytic Brain Stem Tumors and Midbrain Tumors

1996 ◽  
Vol 24 (5) ◽  
pp. 256-262 ◽  
Author(s):  
Harold J. Hoffman
Keyword(s):  
Brain Stem ◽  
Midbrain Tumors ◽  
Brain Stem Tumors
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