development of MRI hardware and methodologies, including image acquisition and reconstruction
techniques, that would improve the speed, spatial resolution, information content, efficiency,
robustness, quality, patient experience, and safety. The emphasis should be on technological
development rather than detailed applications to specific diseases or organs.
E.
Molecular Probes and Imaging Agents. Development and biomedical application of molecular
probes and imaging agents across all imaging modalities for the visualization, characterization and
quantification of normal biological and pathophysiological processes and anatomy in living organisms at
the molecular, cellular and organ levels. The emphasis is on engineering of targeting and responsive
molecular probes of high sensitivity and specificity for PET and SPECT (radiotracers), MR (T1, T2,
CEST, hyperpolarized agents), EPR, CT, optical (fluorescent and bioluminescent probes), ultrasound
(microbubbles) and photoacoustic imaging. The imaging agents may be based on nano- and micro-
particles, liposomes, dendrimers, proteins, small organic and inorganic molecules etc., and
detectable by one or more imaging modalities. Imaging agent development through methodologies
such as chemical synthesis, biological mutagenesis, microfabrication, etc., may be pursued with an
intent of leading to in vivo biomedical application.
F.
Nuclear Medicine. Research and development of technologies and techniques that create images
out of the gamma- ray (SPECT) or positron (PET) emissions from radioactive agents that are
injected, inhaled, or ingested into the body. The emphasis is on simulation and development of
new detectors, collimators, and readout methods that enhance the signal quality of detecting
isotope emissions; designs of novel camera geometries; and correction methods that compensate
for the radiation physics properties to improve the clinical reliability of the image. Of interest are
improvements and corrections for interaction events in PET detectors and enhancement to time of
flight (TOF) image generation methods (reconstructions algorithms); as well as new collimator and
camera designs for SPECT.
G.
Optical Imaging and Spectroscopy. Development and application of optical imaging, microscopy,
and spectroscopy techniques for improving disease prevention, diagnosis, and treatment in the
medical office, at the bedside, or in the operating room. Examples of research areas include
fluorescence imaging, bioluminescence imaging, OCT, SHG, IR imaging, diffuse optical
tomography, optical microscopy and spectroscopy, confocal microscopy, and multiphoton
microscopy. The emphasis is on development of cost effective, portable, safe, and non-invasive or
minimally invasive devices, systems, and technologies for early detection, diagnosis, and treatment
for a range of diseases and health conditions.
H.
Ultrasound: Diagnostic and Interventional. Development and improvement of technologies for
diagnostic or therapeutic uses of ultrasound. The diagnostic ultrasound program includes, but is not
limited to the design, development and construction of transducers, transducer arrays, and transducer
materials, innovative image acquisition and display methods, innovative signal processing methods
and devices, and optoacoustic and thermoacoustic technology. It also includes the development of
image-enhancement devices and methods, such as contrast agents, image and data presentation and
mapping methods, such as functional imaging and image fusion. The therapeutic ultrasound program
includes, but is not limited to the design, development, and construction of transducers, transducer
arrays, interventional technologies, adjunct enhancement of non-ultrasound therapy applications,
high-intensity focused ultrasound (HIFU), or hyperthermia applications. It also includes non-
invasive or minimally invasive interventional surgical or therapy tools, ultrasound contrast agents
for therapy, targeted drug delivery, neuromodulation, and biopsy.
I.
X-ray, Electron, and Ion Beam. Research and development of technologies and techniques that
create images of internal structures, contrast agents, or molecular probes using x-rays
transmitted through the body (CT, mammography) or x-ray stimulation of secondary emissions
(x-ray fluorescence tomography). Emphasis is on simulation, design and development of new
detector systems; new readout methods that enhance the signal quality for x-ray image
generation; designs of novel imaging geometries; algorithms that compensate for the physical
properties of the detection system to improve the clinical reliability of the image (reconstruction