Abstract：
OBJECTIVE:By adding a tracking sensor to a 3D ultrasound (US) probe and thus locating the probe in space, new applications within the fields of image guided surgery and radiation therapy are possible. To locate the US volume in space, a calibration is necessary to determine the mathematical transformation for mapping points from the tracking coordinate system to the US image coordinate system. We present a comprehensive comparison of two different approaches to perform this calibration for 3D US. METHODS:For both approaches a phantom is scanned and located in the images by means of segmentation and registration techniques. Calibration is then performed by either relating the tracked phantom's (TP) spatial location to the calibration scans, or by solely correlating scans taken from multiple perspectives when using hand-eye calibration methods (HE). Depending on which approach is utilized, a minimum of one or three images, respectively, need to be acquired for the calibration process. RESULTS:We evaluated both approaches for calibration and reconstruction precision. Regarding the latter, the performed tests led to mean target localization errors of 3.5 mm (HE) and 3.3 mm (TP) for real data, and of 1.4 mm (HE) and 0.9 mm (TP) for simulated data. CONCLUSION:Our results indicate that taking additional scans leads to a significant improvement in the calibration. Furthermore, the obtained calibration and reconstruction precisions suggest the use of a TP.
journal_name
Int J Comput Assist Radiol Surgauthors
Bergmeir C,Seitel M,Frank C,De Simone R,Meinzer HP,Wolf Idoi
10.1007/s11548-008-0258-xsubject
Has Abstractpub_date
2009-03-01 00:00:00pages
203-13issue
2eissn
1861-6410issn
1861-6429journal_volume
4pub_type
杂志文章abstract：PURPOSE:Epidural and spinal needle insertions, as well as facet joint denervation and injections are widely performed procedures on the lumbar spine for delivering anesthesia and analgesia. Ultrasound (US)-based approaches have gained popularity for accurate needle placement, as they use a non-ionizing, inexpensive and...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-017-1552-2
更新日期：2017-06-01 00:00:00
abstract：PURPOSE:Prostate carcinoma is a commonly diagnosed cancer in men. Nonsurgical treatment of early stage prostate cancer is an important alternative. The use of MRI for tumor cryoablation is of particular interest: it offers lower morbidity compared with other localized techniques. However, the current manual procedure i...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-011-0558-4
更新日期：2011-11-01 00:00:00
abstract：PURPOSE:Accurate needle tracking provides essential information for MRI-guided percutaneous interventions. Passive needle tracking using MR images is challenged by variations of the needle-induced signal void feature in different situations. This work aimed to develop an automatic needle tracking algorithm for MRI-guid...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-020-02226-8
更新日期：2020-10-01 00:00:00
abstract：PURPOSE:Automated segmentation of anatomical structures in medical image analysis is a prerequisite for autonomous diagnosis as well as various computer- and robot-aided interventions. Recent methods based on deep convolutional neural networks (CNN) have outperformed former heuristic methods. However, those methods wer...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-018-01910-0
更新日期：2019-03-01 00:00:00
abstract：PURPOSE:Most evaluations of surgical workflow or surgeon skill use simple, descriptive statistics (e.g., time) across whole procedures, thereby deemphasizing critical steps and potentially obscuring critical inefficiencies or skill deficiencies. In this work, we examine off-line, temporal clustering methods that chunk ...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-017-1606-5
更新日期：2017-07-01 00:00:00
abstract：PURPOSE:To evaluate the effect of image registration on the diagnostic performance of transfer learning (TL) using pretrained convolutional neural networks (CNNs) and three-phasic dynamic contrast-enhanced computed tomography (DCE-CT) for primary liver cancers. METHODS:We retrospectively evaluated 215 consecutive pati...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-019-01987-1
更新日期：2019-08-01 00:00:00
abstract：PURPOSE:C-arm fluoroscopy is frequently used in clinical applications as a low-cost and mobile real-time qualitative assessment tool. C-arms, however, are not widely accepted for applications involving quantitative assessments, mainly due to the lack of reliable and low-cost position tracking methods, as well as adequa...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-013-0957-9
更新日期：2014-07-01 00:00:00
abstract：PURPOSE:Calibration and registration are the first steps for augmented reality and mixed reality applications. In the medical field, the calibration between an RGB-D camera and a C-arm fluoroscope is a new topic which introduces challenges. METHOD:A convenient and efficient calibration phantom is designed by combining...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-015-1347-2
更新日期：2016-08-01 00:00:00
abstract：OBJECTIVE:Complex oncologic interventions in the liver require an extensive and careful preoperative analysis. Particularly the achievement of an optimal safety margin around tumors remains a difficult task for surgeons. METHODS:We present new methods for evaluating different safety margins and their effect on the ass...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-009-0359-1
更新日期：2009-09-01 00:00:00
abstract：PURPOSE:Laser range scanners (LRS) allow performing a surface scan without physical contact with the organ, yielding higher registration accuracy for image-guided surgery (IGS) systems. However, the use of LRS-based registration in laparoscopic liver surgery is still limited because current solutions are composed of ex...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-015-1309-8
更新日期：2016-08-01 00:00:00
abstract：PURPOSE:Convolutional neural networks (CNNs) have obtained enormous success in liver segmentation. However, there are several challenges, including low-contrast images, and large variations in the shape, and appearance of the liver. Incorporating prior knowledge in deep CNN models improves their performance and general...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-019-02085-y
更新日期：2020-02-01 00:00:00
abstract：PURPOSE:The use of projector-based augmented reality (AR) in surgery may enable surgeons to directly view anatomical models and surgical data from the patient's surface (skin). It has the advantages of a consistent viewing focus on the patient, an extended field of view and augmented interaction. This paper presents an...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-013-0897-4
更新日期：2013-11-01 00:00:00
abstract：PURPOSE: Most of the current Bonebridge surgeries undergo preoperative simulation planning in a computer. However, surgeons usually use the landmarks on the bone surface to determine the location where to implant the device, using the simulation image in the computer only as a reference (conventional method). We deve...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-013-0973-9
更新日期：2014-09-01 00:00:00
abstract：PURPOSE:In the context of aviation and automotive navigation technology, assistance functions are associated with predictive planning and wayfinding tasks. In endoscopic minimally invasive surgery, however, assistance so far relies primarily on image-based localization and classification. We show that navigation workfl...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-020-02264-2
更新日期：2020-12-01 00:00:00
abstract：PURPOSE:To develop and validate an automated assessment of surgical performance (AASP) system for objective and computerized assessment of pelvic lymph node dissection (PLND) as an integral part of robot-assisted radical cystectomy (RARC) using console-feed videos recorded during live surgery. METHODS:Video recordings...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-018-1881-9
更新日期：2019-04-01 00:00:00
abstract：PURPOSE:Minimally invasive aortic valve replacement (MIAVR) procedures remain more complex and technically challenging compared to conventional full sternotomy surgery. This technique involves a restricted surgical field and a limited workspace, which is, at present, strictly reserved for the most experienced surgeons....
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-018-1725-7
更新日期：2018-08-01 00:00:00
abstract：PURPOSE:Minimally invasive cochlear implantation is a surgical technique which requires drilling a canal from the mastoid surface toward the basal turn of the cochlea. The choice of an appropriate drilling strategy is hypothesized to have significant influence on the achievable targeting accuracy. Therefore, a method i...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-014-0997-9
更新日期：2014-11-01 00:00:00
abstract：PURPOSE:Surgical quality in phonomicrosurgery can be improved by open-loop laser control (e.g., high-speed scanning capabilities) with a robust and accurate closed-loop visual servoing systems. A new vision-based system for laser scanning control during robot-assisted phonomicrosurgery was developed and tested. METHOD...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-014-1078-9
更新日期：2015-02-01 00:00:00
abstract：BACKGROUND:Image registration lies in the core of augmented reality (AR), which aligns the virtual scene with the reality. In AR surgical navigation, the performance of image registration is vital to the surgical outcome. METHODS:This paper presents a practical marker-less image registration method for AR-guided oral ...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-019-01921-5
更新日期：2019-05-01 00:00:00
abstract：PURPOSE:Sharing of medical data is crucial for the proper treatment of patients as it could reduce the risk of duplicated medical tests and speed up the care process if all documents are readily available. Despite great technical progress, sharing patient data while maintaining full control over the process in an inter...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-018-1819-2
更新日期：2018-11-01 00:00:00
abstract：PURPOSE:The interaction with interventional imaging systems within a sterile environment is a challenging task for physicians. Direct physician-machine interaction during an intervention is rather limited because of sterility and workspace restrictions. METHODS:We present a gesture-controlled projection display that e...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-015-1215-0
更新日期：2016-01-01 00:00:00
abstract：PURPOSE:To perform bronchoscopy safely and smoothly, it is very important to develop a bronchoscopic guidance system. Transbronchial lung biopsy (TBLB) with a bronchoscopic guidance system especially should permit safe image-guided procedures. Recently, electromagnetic tracking (EMT) is utilized to track the tip of the...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-011-0626-9
更新日期：2012-05-01 00:00:00
abstract：PURPOSE:The accurate and automatic localisation of SEEG electrodes is crucial for determining the location of epileptic seizure onset. We propose an algorithm for the automatic segmentation of electrode bolts and contacts that accounts for electrode bending in relation to regional brain anatomy. METHODS:Co-registered ...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-018-1740-8
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVE:For planning surgical interventions at the spine affected by osteoporosis, accurate information about the local bone quality in terms of anchorage strength for implants is very important. Based on previous work on automated bone quality assessment on the proximal femur with a completely automated model-based ...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-009-0287-0
更新日期：2009-05-01 00:00:00
abstract：PURPOSE:Laparoscopic techniques have nowadays become a gold standard in many surgical procedures, but they imply a more difficult learning skills process. Simulators have a fundamental role in the formative stage of new surgeons. This paper presents the construct and face validity of SINERGIA laparoscopic virtual reali...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-010-0425-8
更新日期：2010-07-01 00:00:00
abstract：PURPOSE:Ultrasound is increasingly being employed in different orthopedic procedures as an imaging modality for real-time guidance. Nevertheless, low signal-to-noise-ratio and different imaging artifacts continue to hamper the success of ultrasound-based procedures. Bone shadow region is an important feature indicating...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-017-1556-y
更新日期：2017-06-01 00:00:00
abstract：PURPOSE:Abnormalities of aortic surface and aortic diameter can be related to cardiovascular disease and aortic aneurysm. Computer-based aortic segmentation and measurement may aid physicians in related disease diagnosis. This paper presents a fully automated algorithm for aorta segmentation in low-dose non-contrast CT...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-013-0924-5
更新日期：2014-03-01 00:00:00
abstract：PURPOSE:Organ motion due to patient breathing introduces a technical challenge for dosimetry and lung tumor treatment by hadron therapy. Accurate dose distribution estimation requires patient-specific information on tumor position, size, and shape as well as information regarding the material density and stopping power...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-013-0935-2
更新日期：2014-05-01 00:00:00
abstract：PURPOSE:Computer-aided detection (CAD) systems are developed to help radiologists detect colonic polyps over CT scans. It is possible to reduce the detection time and increase the detection accuracy rates by using CAD systems. In this paper, we aimed to develop a fully integrated CAD system for automated detection of p...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-017-1521-9
更新日期：2017-04-01 00:00:00
abstract：OBJECTIVE:The identification of the interhemispheric fissure (IF) is important in clinical applications for brain landmark identification, registration, symmetry assessment, and pathology detection. The IF is usually approximated by the midsagittal plane (MSP) separating the brain into two hemispheres. We present a fas...
journal_title：International journal of computer assisted radiology and surgery
pub_type： 杂志文章
doi：10.1007/s11548-009-0366-2
更新日期：2009-11-01 00:00:00
