Research Topics
| D X HammerSummaryAffiliation: Physical Sciences Country: USA Publications
Research Grants
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Detail Information
Publications
Angiography with a multifunctional line scanning ophthalmoscopeDaniel X Hammer
Physical Sciences Inc, 20 New England Business Center, Andover, Massachusetts 01810, USA
J Biomed Opt 17:026008. 2012..This approach has the potential to improve patient comfort and reduce imaging session times, allowing clinicians to better diagnose, plan, and conduct patient procedures with improved outcomes...- Foveal fine structure in retinopathy of prematurity: an adaptive optics Fourier domain optical coherence tomography studyDaniel X Hammer
Physical Sciences Inc, 20 New England Business Center, Andover, MA 01810, USA
Invest Ophthalmol Vis Sci 49:2061-70. 2008..To describe the fine structure of the fovea in subjects with a history of mild retinopathy of prematurity (ROP) using adaptive optics-Fourier domain optical coherence tomography (AO-FDOCT)... 
Line-scanning laser ophthalmoscopeDaniel X Hammer
Physical Sciences Incorporated, 20 New England Business Center, Andover, Massachusetts 01810, USA
J Biomed Opt 11:041126. 2006....- Active retinal tracker for clinical optical coherence tomography systemsDaniel X Hammer
Physical Sciences Inc, 20 New England Business Center, Andover, Massachusetts 01810, USA
J Biomed Opt 10:024038. 2005..For example, tracking will enable very high density 3-D scans of the retina, which are susceptible to eye motion artifacts even for new high-speed systems... - Compact scanning laser ophthalmoscope with high-speed retinal trackerDaniel X Hammer
Physical Sciences Incorporated, 20 New England Business Center, Andover, Massachusetts 01810, USA
Appl Opt 42:4621-32. 2003..Successful frame coaddition allowed image acquisition with decreased noise in low-light applications. The retinal tracking system significantly enhances the imaging capabilities of the scanning laser ophthalmoscope... - Investigation of the transduction mechanism of infrared detection in Melanophila acuminata: photo-thermal-mechanical hypothesisD X Hammer
Department of Electrical Engineering, University of Texas, Austin, TX 78712, USA
Comp Biochem Physiol A Mol Integr Physiol 132:381-92. 2002..The results of this paper are discussed in relation to the photo-thermal-mechanical transduction hypothesis. This is the first experimental examination of the transduction mechanism in Melanophila acuminata... - Real-time processing for Fourier domain optical coherence tomography using a field programmable gate arrayTeoman E Ustun
Physical Sciences Inc, Andover, Massachusetts 01810I, USA
Rev Sci Instrum 79:114301. 2008..A display frame rate of 27 fps for fully processed FDOCT images (1024 axial pixels x 512 lateral A-scans) was achieved in the spectrometer-based systems... - Sensitivity threshold and response characteristics of infrared detection in the beetle Melanophila acuminata (Coleoptera: Buprestidae)D X Hammer
Electrical and Computer Engineering Department, University of Texas, Austin, TX 78712, USA
Comp Biochem Physiol A Mol Integr Physiol 128:805-19. 2001..The ability to detect infrared radiation is rare in nature, and these results provide valuable information necessary to understand this unique sensitivity... - Compact multimodal adaptive-optics spectral-domain optical coherence tomography instrument for retinal imagingChad E Bigelow
Physical Sciences Inc, Andover, MA 01810, USA
J Opt Soc Am A Opt Image Sci Vis 24:1327-36. 2007..In human volunteer testing, we observed up to an 8 dB increase in OCT signal and a corresponding lateral resolution of <10 microm as a result of AO correction... 
Optical coherence tomography imaging for cancer diagnosis and therapy guidanceN Iftimia
Physical Sciences, Andover, MA 01810, USA
Conf Proc IEEE Eng Med Biol Soc 2009:4067-9. 2009..In this paper we present an application of OCT for pancreatic cancer diagnosis and therapy guidance...- Adaptive optics scanning laser ophthalmoscope with integrated wide-field retinal imaging and trackingR Daniel Ferguson
Physical Sciences Inc, 20 New England Business Center, Andover, Massachusetts 01810, USA
J Opt Soc Am A Opt Image Sci Vis 27:A265-77. 2010.... - High resolution multimodal clinical ophthalmic imaging systemMircea Mujat
Physical Sciences Inc, 20 New England Business Center, Andover MA 01810, USA
Opt Express 18:11607-21. 2010.... - Automated algorithm for breast tissue differentiation in optical coherence tomographyMircea Mujat
Physical Sciences, Inc, 20 New England Business Center, Andover, Massachusetts 01810, USA
J Biomed Opt 14:034040. 2009.... - Compact adaptive optics line scanning ophthalmoscopeMircea Mujat
Physical Sciences Inc, 20 New England Business Center, Andover, MA 01810, USA
Opt Express 17:10242-58. 2009..In addition to instrument design, fabrication, and testing, software algorithms were developed for automated image registration and cone counting... - Dual-beam Fourier domain optical Doppler tomography of zebrafishNicusor V Iftimia
Physical Sciences Inc, 20 New England Business Center, Andover MA 01810, USA
Opt Express 16:13624-36. 2008.... - Tracking optical coherence tomographyR Daniel Ferguson
Physical Sciences, Inc, 20 New England Business Center, Andover, Massachusetts 01810, USA
Opt Lett 29:2139-41. 2004.... - Spectral-domain low coherence interferometry/optical coherence tomography system for fine needle breast biopsy guidanceN V Iftimia
Physical Sciences, Inc, 20 New England Business Center Drive, Andover, Massachusetts 01810, USA
Rev Sci Instrum 80:024302. 2009.... - Retinal nerve fiber layer assessment using optical coherence tomography with active optic nerve head trackingHiroshi Ishikawa
UPMC Eye Center, Eye and Ear Institute, Ophthalmology and Visual Science Research Center, Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA
Invest Ophthalmol Vis Sci 47:964-7. 2006..To develop an eye-motion-tracking optical coherence tomographic (OCT) method and assess its effect on image registration and nerve fiber layer (NFL) thickness measurement reproducibility... - Large-field-of-view, modular, stabilized, adaptive-optics-based scanning laser ophthalmoscopeStephen A Burns
School of Optometry, Indiana University, Bloomington 47405, USA
J Opt Soc Am A Opt Image Sci Vis 24:1313-26. 2007..The retinal image was stabilized to within 18 microm 90% of the time. Stabilization was sufficient for cross-correlation techniques to automatically align the images...
Research Grants
- Real-Time Three-Dimensional Motion Control TrackerDaniel Hammer; Fiscal Year: 2003..After optimization, the Phase II instrument will be tested in a clinical ophthalmic program and the improvement in measurement of retinal features (e.g., nerve fiber layer thickness) will be quantified. ..
- Stabilized Adaptive Optics Imaging Laser MicrosurgeryDaniel Hammer; Fiscal Year: 2004..abstract_text> ..
- Single Shot OCTDaniel Hammer; Fiscal Year: 2006..In addition, the developed instrument and the principles upon which it is based may be used to image other disease types throughout the human body. ..
- Compact Line-scanning Adaptive Optics Retinal ImagerDaniel Hammer; Fiscal Year: 2007..These researchers will, in turn, use this tool to increase our understanding of vision and its disruption by disease and for the development of new drugs and therapies. ..