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Bleeker M, van der Horst A, Bel A, Sonke JJ, van Hooft JE, Pouw RE, Hulshof MC. Endoscopically placed fiducial markers for image-guided radiotherapy in preoperative gastric cancer: Technical feasibility and potential benefit. Endosc Int Open 2023; 11:E866-E872. [PMID: 37745837 PMCID: PMC10513787 DOI: 10.1055/a-2129-2840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/13/2023] [Indexed: 09/26/2023] Open
Abstract
Background and study aims Fiducial markers have demonstrated clinical value in radiotherapy in several organs, but little is known about markers in the stomach. Here, we assess the technical feasibility of endoscopic placement of markers in gastric cancer patients and their potential benefit for image-guided radiotherapy (IGRT). Patients and methods In this prospective feasibility study, 14 gastric cancer patients underwent endoscopy-guided gold (all patients) and liquid (7 patients) marker placements distributed throughout the stomach. Technical feasibility, procedure duration, and potential complications were evaluated. Assessed benefit for IGRT comprised marker visibility on acquired imaging (3-4 computed tomography [CT] scans and 19-25 cone-beam CTs [CBCTs] per patient) and lack of migration. Marker visibility was compared per marker type and location (gastroesophageal junction (i.e., junction/cardia), corpus (corpus/antrum/fundus), and pylorus). Results Of the 93 marker implantation attempts, 59 were successful, i.e., marker in stomach wall and present during entire 5-week radiotherapy course (2-6 successfully placed markers per patient), with no significant difference (Fisher's exact test; P >0.05) in success rate between gold (39/66=59%) and liquid (20/27=74%). Average procedure duration was 24.4 min (range 16-38). No procedure-related complications were reported. All successfully placed markers were visible on all CTs, with 81% visible on ≥95% of CBCTs. Five markers were poorly visible (on <75% of CBCTs), possibly due to small marker volume and peristaltic motion since all five were liquid markers located in the corpus. No migration was observed. Conclusions Endoscopic placement of fiducial markers in the stomach is technically feasible and safe. Being well visible and positionally stable, markers provide a potential benefit for IGRT.
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Affiliation(s)
- Margot Bleeker
- Radiation Oncology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Cancer treatment and quality of life, Imaging and biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
| | - Astrid van der Horst
- Radiation Oncology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Arjan Bel
- Radiation Oncology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Cancer treatment and quality of life, Imaging and biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
| | - Jan-Jakob Sonke
- Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Jeanin E. van Hooft
- Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, Netherlands
- Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - R. E. Pouw
- Cancer treatment and quality of life, Imaging and biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
- Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
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Lu Q, Guo D, Wei Y, Zheng J, Li J. Role of gastrointestinal ultrasound in image-guided radiation therapy: A review. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2023. [DOI: 10.1016/j.jrras.2022.100520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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DeVries DR, Olafsen LJ, Olafsen JS, Nguyen HH, Schubert KE, Dayawansa S, Huang JH. Ultrasound Localization of Nitinol Wire of Sub-Wavelength Dimension. IEEE OPEN JOURNAL OF ENGINEERING IN MEDICINE AND BIOLOGY 2022; 3:18-24. [PMID: 35399792 PMCID: PMC8939268 DOI: 10.1109/ojemb.2022.3151230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/10/2022] [Accepted: 02/09/2022] [Indexed: 11/08/2022] Open
Abstract
Goal: To enhance endovascular navigation using surgical guidewires and the use of ionizing radiation, we demonstrate a method for ultrasonic localization of wires with diameters less than the wavelength of ultrasound in the medium. Methods: Nitinol wires with diameters ranging from 50 μm to 250 μm were imaged ultrasonically in a 0.25-in-diameter water-filled tube in a gelatin medium. Imaging frequencies were 5 MHz, 7.5 MHZ, and 10 MHz. Results: For the full range of diameters traversing the phantom, the wires were localized successfully via visual inspection of both regular and difference ultrasound images. Similarly, two convolutional neural networks were trained, and both achieved an accuracy of over 95%. Conclusions: Wires with diameters as small as 50 μm were localized successfully in a water-based gelatin phantom, indicating the potential use of ultrasound to enhance endovascular navigation and surgical treatment.
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Affiliation(s)
| | | | | | | | | | - S Dayawansa
- Baylor Scott & White Health Neuroscience Institute Temple TX 76502 USA
| | - J H Huang
- Baylor Scott & White Health Neuroscience Institute Temple TX 76502 USA
- Texas A&M University College of Medicine Temple TX 76502 USA
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Abstract
PURPOSE OF REVIEW To update on recent advances in interventional endoscopic ultrasound (INVEUS) techniques. RECENT FINDINGS The introduction of linear echoendoscopes with larger instrument channels and the combined development of new tools and devices have enabled various new applications of minimally invasive endoscopic ultrasound (EUS)-guided transluminal interventions of the pancreas, biliary system and peri-gastrointestinal structures. In this review, EUS-guided interventions are discussed and evaluated: drainage of peripancreatic fluid collections, access and drainage of bile ducts, gallbladder and pancreatic duct, treatment of gastrointestinal haemorrhage, coeliac plexus block and coeliac plexus neurolysis, fiducial placement, solid and cystic tumour ablation, drug delivery and brachytherapy, gastroenterostomy, angiotherapy and other EUS-guided applications. The EUS-guided interventions are classified based on the available evidence as established or experimental, standardized or nonstandardized procedures in common or rare diseases with well or little known complications and their established or nonestablished treatment. SUMMARY Some EUS-guided interventions have sparse published evidence with only single-centre studies, case series or individual case reports, others like drainage of peripancreatic fluid collections have become widely accepted practice. INVEUS has been accepted as an alternative to several surgical approaches, EUS-guided techniques result in faster recovery times, shorter hospital stay and lower costs.
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Affiliation(s)
- Christoph F Dietrich
- Department Allgemeine Innere Medizin (DAIM), Kliniken Hirslanden Beau Site, Salem und Permanence, Switzerland
| | - Barbara Braden
- Translational Gastroenterology Unit, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Christian Jenssen
- Department of Internal Medicine, Krankenhaus Maerkisch-Oderland, D-15344 Strausberg and Brandenburg Institute of Clinical Ultrasound at Medical University Brandenburg, Germany
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Hearn N, Bugg W, Chan A, Vignarajah D, Cahill K, Atwell D, Lagopoulos J, Min M. Manual and semi-automated delineation of locally advanced rectal cancer subvolumes with diffusion-weighted MRI. Br J Radiol 2020; 93:20200543. [PMID: 32877210 DOI: 10.1259/bjr.20200543] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To evaluate interobserver agreement for T2 weighted (T2W) and diffusion-weighted MRI (DW-MRI) contours of locally advanced rectal cancer (LARC); and to evaluate manual and semi-automated delineations of restricted diffusion tumour subvolumes. METHODS 20 cases of LARC were reviewed by 2 radiation oncologists and 2 radiologists. Contours of gross tumour volume (GTV) on T2W, DW-MRI and co-registered T2W/DW-MRI were independently delineated and compared using Dice Similarity Coefficient (DSC), mean distance to agreement (MDA) and other metrics of interobserver agreement. Restricted diffusion subvolumes within GTVs were manually delineated and compared to semi-automatically generated contours corresponding to intratumoral apparent diffusion coefficient (ADC) centile values. RESULTS Observers were able to delineate subvolumes of restricted diffusion with moderate agreement (DSC 0.666, MDA 1.92 mm). Semi-automated segmentation based on the 40th centile intratumoral ADC value demonstrated moderate average agreement with consensus delineations (DSC 0.581, MDA 2.44 mm), with errors noted in image registration and luminal variation between acquisitions. A small validation set of four cases with optimised planning MRI demonstrated improvement (DSC 0.669, MDA 1.91 mm). CONCLUSION Contours based on co-registered T2W and DW-MRI could be used for delineation of biologically relevant tumour subvolumes. Semi-automated delineation based on patient-specific intratumoral ADC thresholds may standardise subvolume delineation if registration between acquisitions is sufficiently accurate. ADVANCES IN KNOWLEDGE This is the first study to evaluate the feasibility of semi-automated diffusion-based subvolume delineation in LARC. This approach could be applied to dose escalation or 'dose painting' protocols to improve delineation reproducibility.
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Affiliation(s)
- Nathan Hearn
- Department of Radiation Oncology, Sunshine Coast University Hospital, Birtinya, QLD, Australia.,ICON Cancer Centre, Maroochydore, QLD, Australia.,University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - William Bugg
- Department of Medical Imaging, Sunshine Coast University Hospital, Birtinya, QLD, Australia
| | - Anthony Chan
- Department of Medical Imaging, Sunshine Coast University Hospital, Birtinya, QLD, Australia
| | - Dinesh Vignarajah
- Department of Radiation Oncology, Sunshine Coast University Hospital, Birtinya, QLD, Australia.,ICON Cancer Centre, Maroochydore, QLD, Australia
| | - Katelyn Cahill
- Department of Radiation Oncology, Sunshine Coast University Hospital, Birtinya, QLD, Australia
| | - Daisy Atwell
- Department of Radiation Oncology, Sunshine Coast University Hospital, Birtinya, QLD, Australia.,ICON Cancer Centre, Maroochydore, QLD, Australia.,University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Jim Lagopoulos
- University of the Sunshine Coast, Sippy Downs, QLD, Australia.,Sunshine Coast Mind and Neuroscience - Thompson Institute, University of the Sunshine Coast, Birtinya, QLD, Australia
| | - Myo Min
- Department of Radiation Oncology, Sunshine Coast University Hospital, Birtinya, QLD, Australia.,ICON Cancer Centre, Maroochydore, QLD, Australia.,University of the Sunshine Coast, Sippy Downs, QLD, Australia
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van den Ende RPJ, Kerkhof EM, Rigter LS, van Leerdam ME, Peters FP, van Triest B, Staring M, Marijnen CAM, van der Heide UA. Feasibility of Gold Fiducial Markers as a Surrogate for Gross Tumor Volume Position in Image-Guided Radiation Therapy of Rectal Cancer. Int J Radiat Oncol Biol Phys 2019; 105:1151-1159. [PMID: 31476419 DOI: 10.1016/j.ijrobp.2019.08.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 08/16/2019] [Accepted: 08/26/2019] [Indexed: 11/29/2022]
Abstract
PURPOSE To evaluate the feasibility of fiducial markers as a surrogate for gross tumor volume (GTV) position in image-guided radiation therapy of rectal cancer. METHODS AND MATERIALS We analyzed 35 fiducials in 19 patients with rectal cancer who received short-course radiation therapy or long-course chemoradiation therapy. Magnetic resonance imaging examinations were performed before and after the first week of radiation therapy, and daily pre- and postirradiation cone beam computed tomography scans were acquired in the first week of radiation therapy. Between the 2 magnetic resonance imaging examinations, the fiducial displacement relative to the center of gravity of the GTV (COGGTV) and the COGGTV displacement relative to bony anatomy were determined. Using the cone beam computed tomography scans, inter- and intrafraction fiducial displacement relative to bony anatomy were determined. RESULTS The systematic error of the fiducial displacement relative to the COGGTV was 2.8, 2.4, and 4.2 mm in the left-right, anterior-posterior (AP), and craniocaudal (CC) directions, respectively. Large interfraction systematic errors of up to 8.0 mm and random errors up to 4.7 mm were found for COGGTV and fiducial displacements relative to bony anatomy, mostly in the AP and CC directions. For tumors located in the mid and upper rectum, these errors were up to 9.4 mm (systematic) and 5.6 mm (random) compared with 4.9 mm and 2.9 mm for tumors in the lower rectum. Systematic and random errors of the intrafraction fiducial displacement relative to bony anatomy were ≤2.1 mm in all directions. CONCLUSIONS Large interfraction errors of the COGGTV and the fiducials relative to bony anatomy were found. Therefore, despite the observed fiducial displacement relative to the COGGTV, the use of fiducials as a surrogate for GTV position reduces the required margins in the AP and CC directions for a GTV boost using image-guided radiation therapy of rectal cancer. This reduction in margin may be larger in patients with tumors located in the mid and upper rectum compared with the lower rectum.
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Affiliation(s)
- Roy P J van den Ende
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, Netherlands.
| | - Ellen M Kerkhof
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, Netherlands
| | - Lisanne S Rigter
- Department of Gastroenterology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Monique E van Leerdam
- Department of Gastroenterology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Femke P Peters
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, Netherlands
| | - Baukelien van Triest
- Department of Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Marius Staring
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, Netherlands; Division of Image Processing, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Corrie A M Marijnen
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, Netherlands
| | - Uulke A van der Heide
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, Netherlands; Department of Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
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