Two-exponential analysis of spin-spin proton relaxation times in MR imaging using surface coils
Journal Article
·
· Magnetic Resonance Imaging; (USA)
- Institute of Radiology and Pathophysiology, Heidelberg (Germany, F.R.)
Proton relaxation time measurements were performed on a standard whole body MR imager operating at 1.5 T using a conventional surface coil of the manufacturer. A combined CP/CPMG multiecho, multislice sequence was used for the T1 and T2 relaxation time measurements. Two repetition times of 2000 ms (30 echoes) and 600 ms (2 echoes) with 180 degrees-pulse intervals of 2 tau = 22 ms were interleaved in this sequence. A two-exponential T2 analysis of each pixel of the spin-echo images was computed in a case of an acoustic neurinoma. The two-exponential images show a short component (T2S) due to white and gray matter and a long component (T2S) due to the cerebrospinal fluid. In the fatty tissue two components with T2S = 35 {plus minus} 3 ms and T2L = 164 {plus minus} 7 ms were measured. Comparing with Gd-DTPA imaging the relaxation time images show a clear differentiation of vital tumor tissue and cerebrospinal fluid.
- OSTI ID:
- 5025302
- Journal Information:
- Magnetic Resonance Imaging; (USA), Journal Name: Magnetic Resonance Imaging; (USA) Vol. 7:4; ISSN MRIMD; ISSN 0730-725X
- Country of Publication:
- United States
- Language:
- English
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·
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Related Subjects
550600* -- Medicine
62 RADIOLOGY AND NUCLEAR MEDICINE
AMINO ACIDS
BARYONS
BIOLOGICAL MATERIALS
BODY FLUIDS
CARBOXYLIC ACIDS
CEREBROSPINAL FLUID
CHELATING AGENTS
COMPARATIVE EVALUATIONS
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
DTPA
EFFICIENCY
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
GADOLINIUM
HADRONS
MAGNETIC RESONANCE
MATERIALS
METALS
NEOPLASMS
NMR IMAGING
NUCLEAR MAGNETIC RESONANCE
NUCLEONS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PROTONS
RADIOPROTECTIVE SUBSTANCES
RARE EARTHS
RELAXATION
RESONANCE
SPIN-SPIN RELAXATION
62 RADIOLOGY AND NUCLEAR MEDICINE
AMINO ACIDS
BARYONS
BIOLOGICAL MATERIALS
BODY FLUIDS
CARBOXYLIC ACIDS
CEREBROSPINAL FLUID
CHELATING AGENTS
COMPARATIVE EVALUATIONS
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
DTPA
EFFICIENCY
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
GADOLINIUM
HADRONS
MAGNETIC RESONANCE
MATERIALS
METALS
NEOPLASMS
NMR IMAGING
NUCLEAR MAGNETIC RESONANCE
NUCLEONS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PROTONS
RADIOPROTECTIVE SUBSTANCES
RARE EARTHS
RELAXATION
RESONANCE
SPIN-SPIN RELAXATION