Positron Emission Tomography (PET) is an imaging technique that provides physicians with unique information about the body's chemistry. Unlike Computed Tomography (CT) or Magnetic Resonance Imaging (MRI), which primarily examines anatomy, PET allows us to visualize organ function (specifically, regional glucose metabolism). PET is a nuclear medicine technique that employs short-lived positron-emitting radioisotopes and requires sophisticated scanners specifically equipped for detection of the secondary gamma rays. Dedicated full-ring PET scanners provide high-resolution images of even slightly abnormal glucose metabolism throughout the body.

The resultant PET scan can provide otherwise unobtainable diagnostic information about tumors, neurological disorders, and cardiac disease. The higher-than-normal metabolic activity of malignant neoplasms allows PET to detect tiny foci of metastatic disease. Clinical outcomes are significantly improved by earlier detection and more accurate staging of cancer to guide more appropriate therapy. In the brain, PET can be used not only for detection of recurrent tumor after therapy, but also in the evaluation of seizures, Alzheimer's disease and other dementias. Cardiac PET allows more accurate evaluation of the extent of residual viable myocardium prior to possible revascularization.

Widespread recognition of the clinical usefulness of PET has grown rapidly over the last few years, and the procedure is fully covered by most private insurers. Medicare coverage has recently been expanded to include many common malignancies. Our staff is knowledgeable, conscientious and eager to facilitate scheduling and pre-certification of PET exams.

Magnetic Resonance Spectroscopy

"It is now possible to monitor biochemical and metabolic changes in various disease processes, including malignancy, stroke, epilepsy and neurodegenerative disorders."
-James W. Moseley, M.D.
Neuroradiology

Magnetic Resonance Spectroscopy is an extension of MR imaging which allows the identification of specific metabolites and other molecules at precise locations in the body. This technology has been used for many years to elucidate the chemical structure of organic molecules at precise locations in the body. This technology has been used for many years to elucidate the chemical structure of organic molecules in the laboratory. Recently, however, techniques have been developed to allow radiologists to safely and non-invasively evaluate the MR spectra of human metabolites in vivo. It is now possible to monitor biochemical and metabolic changes in various disease processes, including malignancy, stroke, epilepsy and neurodegenerative disorders.

Magnetic Resonance Spectroscopy methods are based upon the phenomenon of chemical shift in which protons in different molecules placed in a strong magnetic field resonate at slightly different frequencies and produce different spectra. These high-resolution spectra can be detected and displayed only by a state-of-the-art, high-field MR scanner such as the 1.5-Tesla GE Signa. Biochemical metabolites may be increased or decreased in certain disease states resulting in "chemical signatures" that radiologists use to confirm specific diagnoses. For example, certain metabolites may be identified in the brain to allow differentiation of benign versus malignant lesions, as well as post-radiation changes versus recurrent tumor.

"MRA functions as an important adjunct prior to percutaneous interventions allowing for a more direct and efficacious approach."
-Steven W. Pruett, M.D.
MRA/MRI Body Imaging

Magnetic Resonance Angiography is new non-invasive methodology for imaging the vascular system. With a single intravenous injection and rapid MR imaging, diagnostic quality angiography can be performed with the state-of-the-art equipment.

Non-invasive MRA imaging is directly comparable to standard angiography, which requires an arterial puncture and potentially toxic contrast injection. The intravenous contrast in MRA is a Gadolinium compound, which has no proven nephrotoxicity. Therefore, MRA is safe for use for patients with renal insufficiency.

MRA images are reviewed on a computer screen, to give unique views in multiple projections, as needed, without re-injection of contrast as with a conventional angiogram. Both arterial and venous studies can be performed. In addition, since patient access to angiography is improved, MRA can be performed in order to direct conventional angiographic interventions such as angioplasty and stent placement, and as a supplement for surgical planning.

The indications for MRA are growing rapidly, and acceptance by insurance carriers and Medicare is expanding. Many patients who are at risk for complications of conventional angiography, including renal toxicity, can now be imaged safely within MRA.

MRA is an outpatient procedure taking about an hour or less. Standard screening for metallic implants is performed prior to the procedure. Mild sedation may be provided by the patient's personal physician or by Rome Imaging staff under the supervision of the radiologist. A prompt written report is sent to the referring physician, with radiologist consultation available to direct further patient management.

William P. Harbin, M.D.
Body Imaging and Diagnostic Radiology

Since 1991, Rome Radiology Group has provided expert, state-of-the-art diagnostic imaging to Northwest Georgia. The region's first MRI unit has been continually upgraded and now offers cutting-edge MR Spectroscophy, MR Angiography, and diffusion/perfusion imaging. Rome has recently added the first dedicated PET scanner in Georgia outside of Atlanta.

Rome Radiology also offers full body CT scanning with a state-of-the-art General Electric Helical CT scanner. Same-day scheduling can usually be offered for all CT examination. All examinations are interpreted and the report faxed to the referring physician on the day of the examination. Examination interpretation or consultation is provided by radiologists with subspecialty training in body CT imaging.