scholarly journals Demonstration of Normal and Abnormal Fetal Brains Using 3D Printing from In Utero MR Imaging Data

2016 ◽  
Vol 37 (9) ◽  
pp. 1757-1761 ◽  
Author(s):  
D. Jarvis ◽  
P.D. Griffiths ◽  
C. Majewski
Keyword(s):  
3D Printing ◽  
Mr Imaging ◽  
In Utero ◽  
Imaging Data

scholarly journals Quantification of total fetal brain volume using 3D MR imaging data acquired in utero

2016 ◽  
Vol 36 (13) ◽  
pp. 1225-1232 ◽  
Author(s):  
Deborah Jarvis ◽  
Rahim Akram ◽  
Laura Mandefield ◽  
Michael Paddock ◽  
Paul Armitage ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Brain Volume ◽  
Fetal Brain ◽  
In Utero ◽  
Imaging Data ◽  
3D Mr Imaging

scholarly journals Overcoming the Clinical–MR Imaging Paradox of Multiple Sclerosis: MR Imaging Data Assessed with a Random Forest Approach

2011 ◽  
Vol 32 (11) ◽  
pp. 2098-2102 ◽  
Author(s):  
K. Kac̆ar ◽  
M.A. Rocca ◽  
M. Copetti ◽  
S. Sala ◽  
Š. Mesaroš ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Random Forest ◽  
Mr Imaging ◽  
Imaging Data

scholarly journals Application of 3D printed model for planning the endoscopic endonasal transsphenoidal surgery

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xing Huang ◽  
Ni Fan ◽  
Hai-jun Wang ◽  
Yan Zhou ◽  
Xudong Li ◽  
...  
Keyword(s):  
3D Printing ◽  
Skull Base ◽  
Transsphenoidal Surgery ◽  
Three Dimensional ◽  
Spatial Relationship ◽  
Cranial Computed Tomography ◽  
Imaging Data ◽  
Endoscopic Endonasal ◽  
Endoscopic Endonasal Transsphenoidal Surgery

AbstractThe application of 3D printing in planning endoscopic endonasal transsphenoidal surgery is illustrated based on the analysis of patients with intracranial skull base diseases who received treatment in our department. Cranial computed tomography/magnetic resonance imaging data are attained preoperatively, and three-dimensional reconstruction is performed using MIMICS (Materialise, Leuven, Belgium). Models of intracranial skull base diseases are printed using a 3D printer before surgery. The models clearly demonstrate the morphologies of the intracranial skull base diseases and the spatial relationship with adjacent large vessels and bones. The printing time of each model is 12.52–15.32 h, and the cost ranges from 900 to 1500 RMB. The operative approach was planned in vitro, and patients recovered postoperatively well without severe complications or death. In a questionnaire about the application of 3D printing, experienced neurosurgeons achieved scores of 7.8–8.8 out of 10, while unexperienced neurosurgeons achieved scores of 9.2–9.8. Resection of intracranial skull base lesions is demonstrated to be well assisted by 3D printing technique, which has great potential in disclosing adjacent anatomical relationships and providing the required help to clinical doctors in preoperative planning.

Magnetic resonance imaging versus ultrasonography for the in utero evaluation of central nervous system anomalies

2010 ◽  
Vol 6 (4) ◽  
pp. 340-345 ◽  
Author(s):  
Pierpaolo Peruzzi ◽  
Rebecca J. Corbitt ◽  
Corey Raffel
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prenatal Diagnosis ◽  
Mr Imaging ◽  
False Negative ◽  
In Utero ◽  
Resonance Imaging ◽  
Fetal Ultrasonography ◽  
Negative Results ◽  
False Negative Results ◽  
Fetal Mr

Object The use of fetal MR imaging for the in utero evaluation of pathological conditions of the CNS is widely accepted as an adjunct to fetal ultrasonography studies. Magnetic resonance imaging is thought to characterize CNS anomalies better, and to provide a more exact diagnosis and accurate prognosis. The purpose of this study was to determine the role of and indications for fetal MR imaging in evaluating fetuses with different CNS abnormalities that were seen initially on prenatal sonograms. Methods Over a 3-year period, fetuses with prior sonographic evidence of CNS abnormalities who consequently received prenatal MR imaging at Columbus Nationwide Children's Hospital within 2 weeks of the fetal ultrasonography study were included in this study. For each patient, radiological reports from both studies were reviewed, analyzed, and compared with the findings at postnatal imaging or physical examination. Results of the 2 modalities were then compared in terms of diagnostic accuracy. Results Twenty-six fetuses were included in this study on the basis of an in utero sonogram showing a CNS anomaly. Their gestational age ranged from 17 to 35 weeks, with a mean of 25 weeks at the time of fetal ultrasonography. Hydrocephalus was identified in 16 fetuses, 6 had evidence of a spinal dysraphic defect, 2 had holoprosencephaly, 1 had an encephalocele, and 1 had multiple body abnormalities requiring detailed CNS evaluation. Twenty-five of the fetuses were correctly evaluated as having abnormal CNS findings on both fetal ultrasonography and fetal MR imaging. Fetal ultrasonography provided a correct prenatal diagnosis in 20 cases, whereas fetal MR imaging was correct in 22 cases. There were 9 cumulative false-positive results for fetal ultrasonography and 7 for fetal MR imaging, whereas for false-negative results there were a total of 34 and 19, respectively. Conclusions Fetal MR imaging is more sensitive in detecting fetal CNS abnormalities, but its ability to provide a correct prenatal diagnosis is only marginally superior to fetal ultrasonography. Moreover, fetal MR imaging is not exempt from misdiagnosis, and still shows a significantly high rate of false-negative results. Particularly for spinal dysraphic defects, fetal MR imaging does not seem to add important diagnostic or prognostic details when compared with fetal ultrasonography.

Intraoperative computed tomography registration and electromagnetic neuronavigation for transsphenoidal pituitary surgery: accuracy and time effectiveness

2011 ◽  
Vol 114 (2) ◽  
pp. 329-335 ◽  
Author(s):  
Paula Eboli ◽  
Bob Shafa ◽  
Marc Mayberg
Keyword(s):  
Mr Imaging ◽  
Operating Room ◽  
Navigation System ◽  
Surgical Techniques ◽  
Imaging Data ◽  
3D Navigation ◽  
Closure Time ◽  
Bony Landmarks ◽  
Room Time ◽  
Operating Room Time

Object The authors assessed the feasibility, anatomical accuracy, and cost effectiveness of frameless electromagnetic (EM) neuronavigation in conjunction with portable intraoperative CT (iCT) registration for transsphenoidal adenomectomy (TSA). Methods A prospective database was established for data obtained in 208 consecutive patients who underwent TSA in which the iCT/EM navigation technique was used. Data were compared with those acquired in a retrospective cohort of 65 consecutive patients in whom fluoroscope-assisted TSA had been performed by the same surgeon. All patients in both groups underwent transnasal removal of pituitary adenomas or neuroepithelial cysts, using identical surgical techniques with an operating microscope. In the iCT/EM technique–treated cases, a portable iCT scan was obtained immediately prior to surgery for registration to the EM navigation system, which did not require rigid head fixation. Preexisting (nonnavigation protocol) MR imaging studies were fused with the iCT scans to enable 3D navigation based on MR imaging data. The accuracy of the navigation system was determined in the first 50 iCT/EM cases by visual concordance of the navigation probe location to 5 preselected bony landmarks. For all patients in both cohorts, total operating room time, incision-to-closure time, and relative costs of imaging and surgical procedures were determined from hospital records. Results In every case, iCT registration was successful and preoperative MR images were fused to iCT scans without affecting navigation accuracy. There was 100% concordance between probe tip location and predetermined bony loci in the first 50 cases involving the iCT/EM technique. Total operating room time was significantly less in the iCT/EM cases (mean 108.9 ± 24.3 minutes [208 patients]) compared with the fluoroscopy group (mean 121.1 ± 30.7 minutes [65 patients]; p < 0.001). Similarly, incision-to-closure time was significantly less for the iCT/EM cases (mean 61.3 ± 18.2 minutes) than for the fluoroscopy cases (mean 71.75 ± 19.0 minutes; p < 0.001). Relative overall costs for iCT/EM technique and intraoperative C-arm fluoroscopy were comparable; increased costs for navigation equipment were offset by savings in operating room costs for shorter procedures. Conclusions The use of iCT/MR imaging–guided neuronavigation for transsphenoidal surgery is a time-effective, cost-efficient, safe, and technically beneficial technique.

Human aorta: preliminary results with virtual endoscopy based on three-dimensional MR imaging data sets.

Radiology ◽  
1996 ◽  
Vol 199 (1) ◽  
pp. 37-40 ◽  
Author(s):  
C P Davis ◽  
M E Ladd ◽  
B J Romanowski ◽  
S Wildermuth ◽  
J F Knoplioch ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Three Dimensional ◽  
Virtual Endoscopy ◽  
Human Aorta ◽  
Data Sets ◽  
Imaging Data ◽  
Preliminary Results

scholarly journals Technical report: 3D printing of the brain for use as a visual-aid tool to communicate MR imaging features of hypoxic ischaemic injury at term with non-physicians

2018 ◽  
Vol 34 (8) ◽  
pp. 1573-1577 ◽  
Author(s):  
Savvas Andronikou ◽  
Ewan Simpson ◽  
Maciej Klemm ◽  
Schadie Vedajallam ◽  
Anith Chacko ◽  
...  
Keyword(s):  
3D Printing ◽  
Mr Imaging ◽  
Imaging Features ◽  
Ischaemic Injury ◽  
Technical Report ◽  
Visual Aid ◽  
The Brain
Sign in / Sign up

Export Citation Format

Share Document